Sa vz. 58 Military Rifle Instructions Manual - CZ-USA...

Sa vz. 58 Military RifleInstructions Manual

Content:

Part I. Description of the design of the Sa vz. 58 Military Rifle.......... 3Chapter 1 General 1.Purposeandpropertiesoftherifle 2.Characteristicsoftherifle 3. Markings

Chapter 2 Description of the main parts of the rifle 1. Barrel 2. Receiver 3. Bolt 4. Trigger mechanism 5. Stock and handguards

Chapter 3 Accessories 1. Magazine 2. Sling 3. Cleaning kit 4. CD

Chapter 4 Ammunition 1. Types of ammunition 2. Loading of magazines

Part II. Functioning of the rifle and troubleshooting, storage, inspections, maintenance and repairs.................................... 21Chapter 1 Functioning of the parts and mechanisms of the rifle 1.Preparingtherifleforshooting 2. Functioning of the parts

Chapter 2 Troubleshooting 1. General rules for preventing malfunctions 2. Typical malfunctions, their causes and solutions

Chapter 3 Storage 1.Storingtherifle

Chapter 4 Repairs

Part III. Zeroing of the rifle................................................................... 40

2.

PARTI.DescriptionofthedesignoftheSavz.58MilitaryRifle

CHAPTER 1 - GENERAL 1. Purpose and properties of the Sa vz. 58 Military rifle TheSavz.58Militaryrifle(hereinafteralsoreferredtoasthe‘rifle’)canonlyfireinthesemi-automaticmode.Thefiringiseffectiveupto600metersatindividualgroundtargetsand800metersatgrouptar-gets. The sight is adjustable from 100 meters to 800 meters in 100 meters increments. Additionally, the rear-sightleafisprovidedwitha‘U’(‘universal’)markforfiringatmovingtargets.TheRifleisdesignedforsportsshootingaswellashunting.

Themaximumrangeoffireis2,800meters.Themuzzlevelocityofthebulletsis705meters/secondanditseffectiverangeisthemaximumrangeofthegun.Theweightoftheriflewithaloadedmagazineis3.80kg. Theweightoftheriflewithoutthemagazineis3.13kg.Thelengthoftherifleis905mm.Anemptymaga-zineweighs0.17kgand0.67kgwhenloadedwith10rounds.

The barrel is pressed in to the receiver. In order to increase service life and corrosion resistance, the bore andthecartridgechamberarechrome-plated.Theboltandlockingpiecearechrome-platedaswell.

EachRifleissuppliedwithaccessories.

2. Characteristics of the Sa vz. 58 Military rifle

TheSavz.58Militaryrifleisasemi-automaticriflewhichisactuatedbythepressureofgasesonthepiston,thegasesbeingproducedinthebarrelthroughcombustionofthepowdercharge.Aportionofgasesenter-ing through the gas vent into the piston space causes the bolt to move automatically to its back position at the moment of shooting. The bolt is returned to its front position by the pressure of the recoil spring.

Therifleisofsimpleconstructionandeasytohandle.Whencorrectlymaintainedandused,itsfiringfunc-tionisreliableandsafeevenundersevereconditions,i.e.indust,rainoratlowandhightemperatures. Thetriggermechanismenablesittoonlyfiresemi-automatically.Therearsightisofafoldingleaftype.Duringfiring,thecartridgesarecontinuouslyfedfromadoublestack30roundmagazineofanarch-likeshape.Whendisassemblingtherifleforcleaningandstoragepurposes,notoolsarenecessary.

Theweightanddimensionsoftherifleallowittobeusedverycomfortablynotonlyatshootingranges,butalsowhenhuntinginwoods,mountains,andallotherkindsofterrain.

3.

Fig. 1 The Sa vz. 58 Military rifle/generalviewfromtheleft/

PART I. Description of the design of the Sa vz. 58 Military

3. Marking and numbering of the rifle

Eachrifleismarkedwiththeserialnumber,nameoftherifle,caliber,countryoforiginandcodemarkoftheU.S.importer.

CHAPTER 2 - DESCRIPTION OF THE MAIN PARTS OF THE RIFLE

TheSavz.58Militaryriflehasthefollowingmainparts

1. Barrel Thebarrel1isintendedtodirecttheprojectile.Thebarrelisprovidedwithaborewithfourgrooveswhichproducesthefourfieldsoftherifling.Thebarrelboretwistproducesarighthandhelixwithaconstantlead(thetwistoftherifling)of240mm,whichimpartsarotarymotiontotheprojectile.Theprojectilerotationensuresthattheprojectileinthecourseofitsflightthroughtheairdoesnotchangeitspositionwithregardtoitslongitudinalaxis(trajectory)andisthusstabilized.Themuzzleisprovidedwithaninnerroundingofthetwistwiththeaimofexcludinganydamagetothetwist.Thediameteroftheboremeasuredbetweentwooppositefieldsisknownasthecaliber.ThecaliberoftheSavz.58Militaryrifleis7.62mm.Inordertoimproveservicelife(toreducewear)andcorrosionresistance,theboreischrome-plated.Thebarrelispressedintothereceiverandlockedwithapin.

Intherearpartofthebore,thetwistpassesintoasmoothcartridgechamberwhoseshapeanddimen-sionscorrespondtothecartridgeincal.7.62mm.Thecartridgechamberpassesintotherifling(therifledpartofthebore)viathetransitionconewhichenablestheprojectiletograduallycutintothegrooves.Thecartridgechamberischrome-platedaswell.

4.

Fig. 2 The Sa vz. 58 Military rifle has the following main parts1-barrel,2-receiver,3-bolt,4-triggermechanism,5-stock,6-magazine

12 1 1413

15

16

Fig. 3 Barrel assembly/generalview/

1-barrel,12-frontsightbase,13-barrelextension,14-gasadapter,15-frontswivel,16-lowerhandguardhoop

PART I. Description of the design of the Sa vz. 58 Military

53 2

1 6

4

The external cylindrical surface of the barrel is stepped four times. Near the muzzle, on the barrel, is the pressedfrontsightbase12whichislockedbytwopins121and122inordertopreventturning(Fig.4).Infrontofthefrontsightbaseisthebarrelextension13attachedpermanentlytothemuzzle.Bar-relextension13isweldedtothefrontsightbase12bottomplate.

Barrelextension13(Fig.5)isofacylindricalshapeandisstrengthenedinitsrearpart.Insidethestrengthenedrearpartisthethreadusedforscrewingthebarrelextensionontothemuzzle.

Approximatelyatthehalfwaypointofthebarrellengthisaninsertedgas adapter14(Fig.6)whichislocked by means of the pin. In the upper part of the gas adapter is a cavity that forms the gas cylinder.Aportionofthepowdergasesisconveyedfromthebarrelthroughthegasadaptertothegascylinder.Thepowdergasesflowtothegascylinderthroughthegaschannelwhichconnectstheborewiththegascylinderspace.Atthehalfwaypointofthelengthofthelowerpartofthegascylinderwall,twoopeningspointingobliquelydownwardalongbothsidesofthebarrelaredrilled.Thepowdergasesescapefromthegascylinderthroughthoseopeningsafteraroundhasbeenfired;thepiston,movingbackwards,haspassedmorethanhalfthegascylinderlength.Ontheleft-handsideofthegasadapteristheeye(thimble)forthefrontswivel15(Fig.3).Bothsidesofthegascylinderfrontpartareprovidedwithlugswithgroovesintowhichtheupperhandguardjackettipsaretoshift.Therearpartofthegasadapterformsacatchbywhichthelowerbarrelguardfronthoopisheld.Halfofthegascylinderupperwalliscutoffforshiftinginandoutof the piston.

Fig 5. Barrel extension/sideview/13-barrelextension

5.PART I. Description of the design of the Sa vz. 58 Military

Fig. 4 Front sight base/sectionalview/11-frontsight,111-frontsightpin,121and122-frontsightbasepins

11 111

122121

13

Piston141(Fig.7)transmitsthekineticenergyofaportionofthepowdergasesproducedbythecombus-tionofthepowderchargeinthebarreltotheboltcarrier.Thefrontpartofthepistonhasacylindricalheadwithacircumferentialgrooveforbetterpackingofgasesinthegascylinderandfordepositionofburntpowderremainders.Therearpartofthepistonisthickenedandformsaguideforpistonspring142withitsoneendleaningagainstthefaceoftherear-sightbaserecessandwithitsotherendagainstthecollarofthecylindricalreinforcementwhich,togetherwiththestopintherear-sightbaserecess,limitsthepistonforwardmotion.Thetransitionofthecylindricalreinforcementintotheguidepartofthepistonisofaconi-calshape;thisconicalsurfacelimitspistonmotionbybearingagainstthecorrespondingsurfaceoftherearsight base. The piston spring causes the piston to return from the rear position once again to the starting position(i.e.tothefrontposition).

Front sight11(Fig.4)togetherwithrearsight21formthesightsoftherifleandareusedforaimingtherifle.Thefrontsightisofacylindricalshape,providedwithathreadinitsbottompart,longitudinallycutandopened.Itisscrewedintothefrontsightpin111andthefrontsightthreadpartenablesittobeadjustedforheight.Afterscrewingthefrontsightintothefront-sightpin,theopenedpartsprings,thuspreventing the front sight from turning spontaneously. Front sight pin111isplacedcrosswiseintheupperpartofthefrontsightholderandisintendedforscrewinginthefrontsightandforitssideadjustmentwhenzeroingin.

Fig. 6 Gas adapter/sectionalview/14-gasadapter,141-piston

142

141

Fig. 7 Piston with spring 141-piston,142-pistonspring,143-pistonstop


14

141

143

Thefrontsightholderisshapedinitsupperpartinordertoformacolumnandendswithfront-sightcoverwingsensuringthatthefrontsightisprotectedagainstdamage.Inthefacewallofthefront-sightbaseisahalf-roundrecesswhichuncoversthemiddlepartofthefront-sightpin.Onthefront-sightpinandontherecesswallaretwosightinggaugemarksthat,ifoppositeeachother,indicatethecorrectsidepositionofthe front sight. The correct position for the height of the front sight is locked by a drop of lacquer on the frontedgeofthefrontsightandthefront-sightbase.

2. The receiver assembly

Thereceiver(Fig.8)isoneofthemainpartsoftherifle;itjoinstheotherriflepartstogetherasawholeand guides the bolt.

Itconsistsofthefollowingmainparts:receiverproper2,rearsight21,ejector22,boltcatch23,magazinecatch24,receivercoverpinsafetypin25,receivercoverpin26andlowerhandguardpin27.

Onbothsidesintherectangularrecessofthereceiverareguidinggrooves(a,b)alongwhichtheboltcar-rierandtheboltmove.Inthefrontthickenedpartofthebarsbarerecessesinwhichthelockinglugsofthelockingpiecesnapwhenlockingthebolt.Thefrontwallbetweentheguidebarsischamfered,thusformingtheramp(c)whichenablesthecartridgetobeeasilypushedintothecartridgechamber.Thebar-relisinsertedintothefrontpartofthereceiver.Inthemiddleofthereceiverisbridge(d)whichdividestheentireinnerspaceofthereceiverintotwoparts:thefrontmagazinewellandtherearrecessforseatingthetriggermechanism.Inthefrontmagazinewallisalugwhichengagesinthecorrespondingrecessintheupperpartofthefrontedgeofthereceivermagazinewell.

Rearsight(Fig.9)enablestheneededanglesofthetan-gentelevationtobeset;therearsightisfixedintherearsightbase.Rearsight21(Fig.10)isassembledtogetherwithrearsightslide211,rearsightplunger212withspring 213 and rear sight feather 214.


25

2621

23

22

Fig. 8 The receiver assembly/topview/2-receiver,21-rearsight,22-ejector,23-boltcatch,25-receivercoverpin,26-receivercoverpinsafetypin,

a-guidinggrooves,b-lockinglugs,c-ramp,d-bridge

b ac

d

212211

Fig. 9 Rear sight assembly21-rearsight,211-slide,212-rearsightplunger,

214-rearsightfeather,a-rearsightbase

2

21214 a


The rear sight baseformsonepiecewiththereceiver.Thesidesofthefrontelevatedpartareprovidedwithopeningsfortherearsightpins.Thesidewallsoftherearsightbaseformramps.Betweenthesidewallsisarecessforshiftingintherearsightfeather.Intherearpartoftherecessisadimpleforfixingtherear sight feather.

Rear sight21isintendedforsettingtheslideinordertocorrespondtoanappropriaterange;itisofaplate-likeshape.Therearepins(a),onitsfrontnarrowedpart,bywhichtheleafisswinginglymountedinthe openings of the rear sight base. The rear sight leaf is inserted into the base by means of the rear sight feather.AttherearendoftheleafistherectangularVnotch(b).Onthetopendoftheleafaregaugelineswithfiguresfrom1to8(theoddfiguresareontherightandtheevenfiguresontheleft)whichindicatetherangeoffireinhundredsofmeters.Therearsightcanconsequentlybesetatadistancefrom100metersto800meters.Additionally,theleft-handsideoftherearsightleafisprovidedwithagaugelinemarkedU,‘universal’,whichindicatesarangeoffireupto300meters.TheUsettingcanbeengagedbyshiftingtheslide211totherearpositionuntilitstops.Ontheright-handsideoftheleafare9notchespointingobliquelydownwards.Therearsightplunger212lugengagesthesenotches,bywhichtheslideislockedinthesetposition.Thedimpleinthefrontnarrowedpartoftherearsightleafisdesignedforthepointedendofthefrontsightspannerwhichisusedfordisassemblingtherearsight.

Slide 211 of the rear sight is slipped over the rear sight leaf. In the middle part of the slide is a rectangular windowthroughwhichtheslidecanbeslippedovertherearsightleaf.Theinsidecylindricalcavityintheslideisintendedforbearingplunger212withspring213.Thebottomsideoftheslideleansonandmovesalongthesightramps.Theright-handsidesurfaceofthesteppedpartoftheslideisannularlyknurledandisintendedtoserveasarestforthefingerwhendepressingtheplungerforsettingtherangeoffire.Theslide is held in the desired position by the plunger.

Rear sight plunger 212 locks the slide in the set position by snapping the chamfered lug of the plunger intheappropriatenotchontheright-handedgeoftherearsightleaf.Theplungerlugisheldinthenotchontherearsightleafbythepressureoftheplungerspring.Thespringisseatedinthecavityoftheslide;withitsoneendleaningontheslideandwiththeotherendagainstthelateralsideoftheplunger.Theplungerisprovidedwithadeeprecesswhosesurfacelockstheplungerinasteadypositionontherearsightleaf;thisflatrecessguidestheplungeralongthebottomsideoftheleaf.Theplungermaybedis-placed after pressing the knurled lateral surface.

211

21

213

212

214

Fig. 10 Rear sight/explodedview/21-rearsight,211-slide,212-rearsightplunger,213-rearsightplungerspring,214-rearsightfeather,

a-sightpins,b-sightnotch

a

b

Rear sight feather214withitsfrontendpressesthebottomsideoftherearsightinfrontoftheleafpinssothattheslideisconstantlyforceddowntotherearsightramps.Therearsightfeatherisshiftedwithitsrearendintothegrooveintherearsightbasetherebypreventingverticalmotionoftherearendofthefeather.Whenthefeatherisshiftedin,thestampeddimpleattheendofthefeatherengagesthedimpleintherearsightbase,whichpreventsforwarddisplacementofthefeatherwhentheleafisbeingput on.

Ejector 22 is placed in the grooves in the upper part of the bridge. The ejector is locked against shifting out by means of the dimple. The face surface of the ejector is chamfered so as to ensure that the contact oftheejectorwiththebaseofthecartridgecaseisalmostone-pointandontheleftoftheverticalaxisofthefiringpinwhenthecartridgeisejected.Thisguaranteesthatthedirectionoftheejectionofthecar-tridgecaseejectedfromtherifleiscorrect,i.e.upwardsandtotheright.

Ontheright-handsidefromtheejector,thebolt catch23issituated.Afterfiringthelastcartridgefromthemagazine,theboltcatchretainstheboltintherear(open)position.Thebottompartoftheboltcatchisdividedbyarecessintotwobranches;theshorteroneiscontrolledbythemagazinefollowerlugandthelongerone(withthecrossknurling)isintendedformanualshiftingoutoftheboltcatch,thusholdingtheboltintheopenedpositionifthisisnecessaryforinspection,cleaning,repairsorotherreasons.Whentheboltismovingforward,itmakescontactwiththecylindricalpartoftheboltcatch.Oncethepressurefromtheboltcatchisremoved(whenthemagazineistakenoutofthereceiver)andtheboltmovedslightlybackwards,boltcatchspring231pushestheboltcatchbackintothereceiverthusdisengagingitfromthebolt.


231

23

241

243

24

242

Fig. 11 Receiver components23-boltcatch,231-boltcatchspring,24-magazinecatch,241-magazinecatchpin,242-magazinecatchspring,

243-magazinecatchpinsafetypin,e-lug

e

Frombelowontheleft-handsideoftheejector,onpin241istheswinginglyseatedmagazinecatch24whichkeepsthemagazineinsertedinthereceiver,thuspreventingitfromfallingout.Themagazinecatchisprovidedwithalugwhich,throughactuationofspring242,snapsinbehindthelugontherearedgenearthemagazinefeedlips.Withitsoneendthespringisseatedinthepocketofthereceiverbridgewhilethe other end bears on the cylindrical recess of the magazine catch.

Pin 241 is common for both the magazine catch and the bolt catch. It is locked against loosening by safe-typin243whichislongitudinallycutupandopened.Atthelongerendofthecut-uppartisexternallug(e)whichsnapsinbehindtheedgeoftherecessintheupperwallofthereceiverbridge.Thesafetypinwithitscylindricalpartfitsintothecircumferentialgrooveonpin241.

Inthebottomofthereceiveraretworectangularopenings.Thetriggerpassesintothefirstonewhiletheotherisdesignedforseatingtheshapednutofthegripscrew.Trigger guard 28 is riveted to the bottom ofthereceiver.Therearwallofthereceiverisprovidedwithathreadforfixingthestocktothereceiver’srearfaceandadditionallywithagrooveforfixingthereturnmechanism.Thepositionofthesteppedreturnmechanismislockedbyreceivercoverpin25(Fig.8)whichiskeptinpositionbytheforceofreceivercoverpinsafetypin26whichpressesagainstthetwocircumferentialgroovesofthereceivercoverpin.Receivercoverpinsafetypin26ismountedverticallyinthewallofthereceiverrearright-handcornerandis pushed by the rear arm of the trigger mechanism feather.

3. Bolt assembly

Theboltmakespossibletheactionoftherifle;pushingthecartridgesfromthemagazineandinsertingthemintothecartridgechamber;lockingthecartridgechamberatthemomentoffiring,ignitingthecar-tridgeprimer,pullingoutandejectingthefiredcartridgecase.

Theboltassemblyhasthefollowingparts:theboltcarrier,bolt,lockingpiece,andstriker.

Bolt carrier35(Fig.13)actuatesthebolt,thelockingpieceandthedisconnector.Thefrontwalloftheboltcarrierisprovidedwitharecessagainstwhichthebottompartofthepistonstrikesatthemomentoffiring.Ontheright-handsideoftheboltcarrieriscockingleverawhichisdesignedforhand-operatedcockingofthebolt.Bothsidesoftheboltcarrierareprovidedwithguidegrooves(b)whichareinterruptedataboutthehalfwaypointbyarecesswhoseshapecorrespondstothecorrespondinglugsinthereceiver.Thisrecessisintendedforinsertingtheboltcarrierinthereceiverandfortakingitoutagain.Therearwalloftheboltcarrierisprovidedwiththreelongitudinalopenings.Thetopopeningismadeinordertohousethereturnspringwhiletheothertwoopeningsaredesignedtolowertheweightoftheboltcarrier.


Fig. 12 Bolt catch and magazine catch/sectionalview/23-boltcatch,241-magazinecatchpin,24-magazinecatch

23241

24

Thebottompartoftheboltcarrierhasarecesswhichisdividedintotwopartsbypartitionwall(c).Thepartitionwalltogetherwithunlockingtip(d)controlthemotionofthelockingpiece.Theunlockingtipformedinthefrontpartpullsthelockingpiecefromthelockedposition.Theunlocking-tipbottomsurfaceformsаguideforthebolt.Boltcarriershaft(e)providedwithanopeningforthestrikerissituatedinthebottomrearpartoftheboltcarrier.Whendisassemblingandassemblingthebolt,thestrikerislockedagainstfalling-outbyalugwhichprojectsfromtheleft-handsideintotheopeningforthestriker.Boltcarriersideplate(f)actuatesthedisconnector.

Locking piece36(Fig.13)ensurestheproperlockingofthecartridgechamber.Itisofhorse-shoeshape;botharmsofthelockingpiecepassattheendsintojoints(m)bywhichthelockingpieceisswinginglycar-riedintheboltbearings.Inthefrontbottompartofthelockingpiecearesituatedlockinglugs(n)which,whenthelockingpieceisinalockedposition,transmitthepressureproducedatthemomentoffiringtothe receiver.

Striker37(Fig.13)strikesagainstthefiringpin.Itisofahollowcylindershapeclosedatitsfrontendbyasmoothfrontwallcomingintocontactwiththefiringpin.Therearopenendhasaheadprovidedwithgroovesbywhichthestrikerisguidedalongthebarsinthereceiver.Thestrikerheadiselongateddown-wards,thusforminganose(o).Thecylindricalpartofthestrikerisreliefedalongtheperipherybymeansofsixlongitudinalgrooves.Thegrooveontheleft-handsideofthestrikerisclosedonitsfrontsideandiselongatedbackwardsasfarasthestrikerhead.Thegrooveisguidefortheprojectionoftheboltcarrier.Theprojectionpreventsthestrikerfromfallingoutoftheboltcarrier.Thisclosedgrooveisjoinedwiththeneighboringlongitudinalgroovebymeansofacrossgroovewhichenablestheprojectionoftheboltcar-riertopasstotheclosedgroove.Strikerspring382(Fig.17)isinsertedwithitsoneendintothecylindricalcavity of the striker.

Bolt3(Fig.14)isprovidedinitsfrontwallwithabedwithacentricopeningforthecartridgebase.Movingfreeinthisopeningisfiringpin31(Fig.14).Extractor32withitsclawreachestheedgeofthecartridgecasebed.Thebottomedgeofthecartridgebasebedisboundbyramminglugs(i)(Fig.13)whichpushthe cartridges out from the magazine into the cartridge chamber. The ejector passes through the groove betweentheseramminglugswhentheboltismovingbackwards.Therecessontheright-handfacewallformsastopfortheboltcatch.Theboltisguidedinthecarrierbygrooves(j)whichareinterruptedonbothsidesoftheboltbytherecessintendedforthelockingpiecewhichiscarriedswinginglyinsemicircu-larbearings(k)(Fig.15).Theboltisprovidedwithanopeningforthestrikerattheback.

37

Fig. 13 Bolt assembly3-bolt,35-boltcarrier,36-lockingpiece,37-striker,

a-cockinglever,b-guidegrooves,c-partitionwall,d-unlockingtip,e-boltcarriershaft,f-boltcarriersideplate,i-ramminglugs,

k-bearings,m-joints,n-lockinglugs,o-strikernose


3

35

36

a

bcd

e f

i

k

m

n

o

Fig. 14 Bolt/disassembled/3-bolt,31-firingpin,32-extractor,33-extractorspring,

34-extractorstay,j-grooves

Firing pin31(Fig.14)ignitesthecartridgeprimer.Itismountedinthebodyofthebolt.Thefiringpinispreventedfromfallingoutbytheextractorbottompartwhichreachesthegrooveinthefiringpinandthusalsolimitsthereturnmotionofthefiringpin.Thefiringpinforwardmotionislimitedbytheconicalsurfaceofthefiringpinwhichbearsagainstthecorrespondingsurfaceintheboltbody.Thethickenedrearendofthefiringpinprojectsintothecavitydesignedforthestrikerandisreliefedbythreeexternallongitudinalgrooves.

Extractor32(Fig.14)extractsthefiredcartridgecasefromthecartridgechamberbymeansofaclawwhich,pressedbyextractorspring33,snapsintothegrooveofthebaseofthecartridgecase.Theextrac-torspringisseatedinthecavityoftheboltandpressesagainststay34whichinturnactuatestheextrac-tor.

Thereturnmechanism(Figs.15)makestheboltreturntotheextremefrontposition.Itconsistsofreturnmechanismbase38withreceivercover381,strikerspring382,strikerspringguide383,returnspring384,returnspringguide385andreturnspringlockingblock386.

Return mechanism base 38 unites all the parts of the return mechanism in order to form one unit. The baseisrivetedwithreceivercover381.Thebaseisformedbyaplatetowhichreturnspringguide385andstrikerspringguide383arefixed.Intherearwallofthebaseisaprojectionbymeansofwhichthereturnmechanism base is positioned in the recess in the rear part of the receiver. In order to prevent the receiver fromfallingout,thebaseislockedbyreceivercoverpin25(Fig.8).

Fig. 15 The return mechanism38-returnmechanismbase,381-receivercover,382-strikerspring,383-strikerspringguide,384-returnspring,

385-returnspringguide,386-returnspringlockingblock

381 385 384

386

38238338


331

32

33

34

j

Receivercover381isastamprivetedwiththebase.Itcoverstherearpartoftherifle’sreceiver.

Striker spring382throwsthestrikeragainstthefiringpin.Itisplacedonstrikerspringguide383whichispivotedonthereturnmechanismbaseandallowsamilddouble-sidedwobbling.Thestrikerspringguideisprovidednearthebasewithаgrooveinwhichtheturnofthestrikerspringsits.Bothendturnsofthestrikerspringhavetheirdiametersreducedsothatthestrikerspring,regardlessofwhichofitsendshasslipped over the guide, cannot be shifted out spontaneously.

Striker spring guide383isasteelrodwhichsupportsstrikerspring382.

Return spring 384 makes the bolt return to the front position. It is placed over return spring guide 385. Theguideismadeofsteelwireanditsbentendsengagethenotchonthereturnspringlockingblock386.

Return springguide385consistsofastickandawire.Thestickisfixedinthereturnmechanismplatebymeansofacrosspinwhichallowsamilddouble-sidedwobblingofthestick.

4. The trigger mechanism

Thetriggermechanismmakesfiringpossibleandisprovidedwithadevicelockingtherifleagainstsponta-neousfire.Itissituatedintherearrecessofthereceiverontwopins.

Thetriggermechanism(Figs.16and17)hasthefollowingparts:trigger4,triggerpin41,disconnector42,disconnectorspring43,disconnectorpin44,sear45,searpin46,triggermechanismfeather47,safetycatch48andsafetycatchholder49.

Trigger 4 is pivoted in the receiver on pin 41 and controls the release of the striker through the sear. The rearpartofthetriggerfingerpieceprojectstoformprojection(a)whichwhenleantagainstthereceiver,restrictsbackwardmotionofthetrigger.Inthetoppartofthetriggerisacut-outinwhichdisconnector42isseatedondisconnectorpin44(Fig.18).Intherearpartofthetriggerisanobliquebedfordisconnectorspring 43.

41

4 45

d c

Fig. 16 Trigger mechanism/inreceiver/4-trigger,41-triggerpin,42-disconnector,45-sear,47-triggermechanismfeather,c,d-triggermechanism

feather arms.


42

47

By means of the lug, disconnector42lowerssear45,bypullingitsprojection(b)(whenthetriggerissqueezed,ifthesafetycatchissetinthe“fire”position).Thelugprojectsontheright-handsideofthefreeendofthedisconnector.Thedisconnectorispivotedonpin44inthecut-outofthetrigger.Onthetopofthedisconnectorisaprojectionwhichiscontrolledbytheleft-handsideboltcarriersideplateduringitsbackwardmotion.Inthebottompartitisprovidedwitharecessagainstwhichdisconnectorspring43leanswithitsoneend.Theotherendofthedisconnectorspringisseatedinthetriggerbed.Thediscon-nectorspringpushesthedisconnectorsoastomakeitcomeintocontactwiththesafetycatch.

46

48

47

dc

4

44

47

42

41

a

43

e

Fig. 17 The trigger mechanism/disassembled/4-trigger,41-triggerpin,411-triggerpine-clip,42-disconnector,43-diconnectorspring,

44-disconnectorpin,45-sear,46-searpin,461-searpine-clip,47-triggermechanismfeather, 48-safetycatch,49-safetycatchholder,491-safetycatchholderspacer,

a-triggerprojection,b-searprojection,c,d-triggermechanismfeatherarms,e-safetycatchwing


45

49

b

Fig. 18 The trigger mechanism/sectionalview/28-triggerguard,44-disconnectorpin

28

44

491

411

461

Thesearispushedintoengagementwiththenoseofthestrikerbythetrigger mechanism feather47arm. The feather is mounted on the bottom of the recess of the receiver. It is locked by the rivet of the triggerguardrearendonwhichthetriggermechanismfeatherisplacedwithitscircularopeninginordertopreventlongitudinaldisplacement.Itissideguidedbythescrewnutofthegrip.Arm(c)ofthefeatherpressesreceivercoverpinsafetypin26whilethebentendofarm(d)snapsintherecessofthesafetycatch,thuslockingitsposition.Thedimpleonarm(d)isintendedforsupportingthepointedendoftheneedlefromaccessorieswhentakingoutorinsertingthesafetycatch.

Safety catch48enablesfiringandpreventsunintendedfiring.Itisacylinderprovidedwithwing(e)atoneofitsends.Thecylindricalpartofthesafetycatchisprovidedonitslefthandsidewithacuttingplacedoppositethedisconnector.Thus,whenthewingofthesafetycatchisinthe“Fire”position,i.e.pointingforward,thedisconnectorslidesintothecutting,raisesupandengagesthesear.When the wing is in the vertical position – locked–thecuttingis90degreetothedisconnector,whichisthuspusheddownbythecylindricalpartofthesafetycatchandoutofreachofthesear.Safety catch holder49,whichisplacedonthesearpin,preventsthesafetycatchfromfallingout.Thecylindricalpartofthesafetycatchisprovidedwithlongitudinalgroovesinwhichthebentendofthetriggermechanismfeatherarmsnaps,whenthesafetycatchchangesitsadjustment.

5. Stock assembly and handguards

TheSavz.58Militaryriflehasastockassembly(Fig.19)whosemainpartsarefixedwoodenstock5.Stock5elongatestherifleandenablestherifletobecorrectlyrestedagainsttheshoulderwhenfiring.Through the opening in its front part passes stock screw52bymeansofwhichthestockisfixedtothereceiver. Rear swivel51issituatedontheleft-handsideofthestockandispivotedonholder511oftherearswivel.Therearswivelholderisplacedonrear swivelbase512whichismountedinthebedofthestock.Therearswivelispreventedfromfallingoutbystockscrew52.

Fig. 19a Stock/disassembled/5-stock,51-rearswivel,511-rearswivelholder,512-rearswivelbase,52-stockscrew,521-stockscrewwasher,522-stockfrontplate,523-buttplate,524-buttplatescrew


54531

53 57

521 52 51

523 524511

512

522 5

Fig. 19b Grip/disassembled/53-gripscrew,531-gripscrewwasher,54-gripnut,57-grip

Thegripisfixedtothereceiverbystockgripscrew53andbystockgripnut54whichisseated intherecessofthereceiverbottom.Thegripscrewheadiscountersunkinthegripandbears againstwasher531.

The handguardsmakeitpossibletoholdtheriflewiththelefthand;theyaremadeofwoodr andcoverаportionofthebarrelandprotecttherifleman’shandagainstheatwhenfiring.

Thefronthandguardsconsistsoftheupperandlowerhandguard.

The upper handguardassembly(Fig.20)coversthebarrelfromthetop.Itconsistsofwoodupper handguard55,metaljacket551,upperhandguardpin552,upperhandguardpinpawl553, upperhandguardpinpawlspring554,upperhandguardholder555.

Frontpartofhandguardmetaljacket551isprojectedtoformtipsabymeansofwhichthehandguardsnapsintothegroovesofthegasadapter.Upperhandguardholder555issituatedinthemiddleofthejacketandisthemetalpiecebymeansofwhichhandguardguard55islockedagainstturning.Projection(b)inthefrontpartofthehandguardformsaguideforthepistoninsteadofthecut-offupperpartofthegascylinder.Rearpartofthehandguardjacketisprovidedwithtwoprojections(c)throughwhichupperhandguardpin552passes.Thepocketforpinpawlspring554andpinpawl553issituatedintheright-handprojection,whichwhenpressedbythespring,snapsintothecircumferentialgroovesonthehand-guardpin.Inthisfashionthehandguardpinislockedagainstfallingoutfromtheright-handprojectionwhenremovingthehandguardofftheweapon.


Fig. 20 Upper handguard55-upperhandguard,551-upperhandguardmetaljacket,552-upperhandguardpin,553-upperhandguardpinpawl,554-upperhandguardpinpawlspring,555-upperhandguardholder,a-tips,b-projection,c-projections

55551

552

553554

555

a

b c

Lower handguard56(Fig.21)ismadeofwoodandcoversthebarrelfrombelow.Thefrontendofthelowerhandguardisshiftedinlowerhandguardfronthoop16whichisslippedoverthebarrelandsnappedinbythegasadapterlug.Therearendofthelowerbarrelguardisfixedtothereceiverbypin561.Bothends of the pin are riveted over.

Fig. 21 Lower handguard (56-lowerhandguard,561-lowerhandguardpin,562-lowerhandguardspacer)

CHAPTER 2 - ACCESSORIES and THEIR DESCRIPTION 1. Accessories EachRifleisprovidedwiththefollowingaccessories:

-one30rdmagazine6-sling8-cleaningkitbag9-cleaningrod(two-part)91-oakumcleaningrod92-horsehairbrush93-oilcan94-needle95-promotionalCD98


56562

9 91

92

9394958

Fig. 22 Accessories6-magazine,8-sling,9-cleaningkitbag,91-cleaningrod,92-oakumcleaningrod,

93-horsehairbrush,94-oilcan,95-needle,98-promotionalCD

6

98

561

Fig. 23 Magazine/disassembled/6–magazinebody;61–magazinefollower;62–magazinespring;63–magazinesafety;

64–magazinefloorplate;a,b–projections,c,d-rim


6

61

62

63

64

a b

c

d

2. Accessories description

1. Magazine6(Fig.23)isdesignedfor continuousloadingoftheriflewithcartridgesduringfiring.Itisofanarchedshapeandtakes30cartridges.Itconsistsofmagazinebody6,magazinefollower61withmagazinespring62,magazinesafety63andmagazinefloorplate64.

Magazine body6ismadeofspecialaluminium alloy and forms a box for the cartridges andpolymermagazinefollowerwithaspring.The case opens at both ends. Thesidewallsareprovidedwithrailsintendedfor guiding both the cartridges in the magazine andthemagazinefollower.Themagazineheadisprovidedwithprojections(aandb)onthefront and rear edges in order to hold the magazineinthereceiver.Themagazine’sheadisprovidedwitharim(c)whichrestrictsthedepth of its insertion into the receiver. Theloweredgesofthesidewallsofthemagazine casearealsoprovidedwithrims(d)ontowhichmagazinefloorplate64isfitted.

Magazine follower61ismadeofplasticandpushes the cartridges into the magazine feed lipsthroughtheactionofmagazinespring62.Therearwallofthemagazinefollowerispro-videdonitsrighthandsidewithaprojection forliftinguptheboltcatchafterhavingfired the last cartridge from the magazine.

Magazine spring62pushesthefollowerintothemagazinefeedlips.Itismadeofstrongsteelwire whichhasoneofitsendshookedunderthemagazinefollowerbottom.Theotherendofthemagazine followerspringisheldbythesidesofmagazine’ssafety63.

Magazine safety63locksthemagazinefloorplateagainstspontaneousshiftingout.Itssidesarebenttoholdthemagazinespringandinthemiddleisprojectionwhichsnapsintotheopeningofthemagazinefloorplate.

Magazine floor plate64ismadeofplasticandclosesthemagazinefrombelow.Ithasaroundopeningin the middle for the projection of the magazine safety.


3. Sling8makesitpossibletocarrytherifle;itis1,220mmlongand26mmwide.Asmallbuckleissewedontooneendoftheslingbywhichtheslingmaybeshortenedorextended.Attheotherend,theslingisprovidedwithasewed-onleatherfasteningstrapwithanopeningfortheconnectingbutton.Whenfixingtheslingtotherifle,leatherfasteningstrapmustbefirstpulledthroughtherearswivel,thenthroughthesmallbuckleandthentheleatherstrapshouldbepulledthroughthefrontswivelontheassaultrifleand the connecting button should be buttoned up.

4. Cleaning kit bag9ismadeofstrongtextilematerialandisdesignedtoholdallthecleaningaccesso-riesaswellasneedle95.

Cleaning rod91isintendedforcleaningandlubricatingtheboreandthecartridgechamber.Thecleaningrodconsistsoftwoparts,1and2,whichmustbescrewedtogetherinordertoformonepiecebeforeitisused.Oneendoftheupperpartofcleaningrod1isprovidedwithathreadtowhicheitheroakumcleaningrod92orhorsehairbrush93canbeattached.Thelowerpartofcleaningrod2isprovidedatoneendwithanannulargroovethroughwhichtheneedleispushedaftershiftingthecleaningrodintheopeningoftheplugofoilcan94.Inthisfashionthecleaningrodcanbeturnedalongthegroovesinthebarrel.

Oakum cleaning rod92isdesignedforcleaningtheboreandthecartridgechamber.Oneendoftheoakumcleaningrodisprovidedwithathreadtobescrewedintothecleaningrod(whencleaningthebore)orintotheoil-canplug(whencleaningthecartridgechamberorthegascylinder).Theotherendispro-videdwithacut-outthroughwhichapieceofragcanbeplaced.Themiddlepartoftheoakumcleaningrodisprovidedwithasquarethreadinterruptedwiththreelongitudinalgrooves.Theoakumistobewoundaroundthisthreadwhencleaningtheboreandthecartridgechamber.

NOTE:Oakumcanbefoundataplumbingsupplystoreandisexcellentforcleaningthebore.Itisusedbyseveral armies in Europe.

Horsehair brush93isusedforcleaningandoilingthebore,thecartridgechamberandthegascylinder.Thebrushhasaneckprovidedwithathreadbymeansofwhichitisscrewedintoeitherthecleaningrodortheoil-canplug.

Oil can94isaroundsmallvesselforkeepingthegunoil.Theoilcanneckisprovidedwithaninternalthreadforscrewingontotheoilcanplug.

The oil can plug has three openings. The longitudinal opening is designed for the end of the cleaning rod. Thecrossopeningisdesignedforhousingtheoakumcleaningrodorthehorsehairbrushwhilecleaningthecartridgechamber.Thelast(cross)openingisforfixingneedle95.Theunscrewedplugwiththekeythen serves as the cleaning rod handle.

Needle95isusedwhendisassemblingandcleaningtherifle.Someneedleshavespannerlikeopeningsintended for adjustment for the height of the front sight.

5. Promotional CD98includesamongtheotherallimportantinformationonSavz.58Militaryrifle.

CHAPTER 4 - AMMUNITION

1. Types of cartridges Only7.62x39mmcartridgesmaybeusedintheSavz.58Militaryrifle.Theyshouldonlybeofexcellentqualityandmanufacturedbyacompanyknownfortheirqualitycontrol.

Cartridgeswithrustyspotsonthemmustbewipedwithadrycloth.Cartridgeswhichhavebeenunpackedforalongertimemustbewipedwithadryclothbeforeloadingthemagazine,andcheckedforlengthandturningofthebullets.Whensomecartridgesareinuseandfrequentlyrammedintomagazinesforalongertime, loosening of the bullet in the cartridge case neck, possible pushing in of the bullet into the cartridge caseorturningofthebulletmayoccur.Inthesecases,thewater-tightnessandoil-tightnessofthecar-tridgesaredecreased.Cartridgeswithpushed-inorturningbulletsmustnotbeused,butdisposedaccord-ingtovalidregulations.Neverusedefectivecartridgesforfiring(thoseconsiderablyrusted,withdamagedcartridgecasesorbullets,withadamporoiledpowderchargeorwithbulletspushedinthecartridgecasesandthelike).

Neverstrikethecartridge,primerorbulletwithahammerorotherhardobjects.

2. Loading the magazine

Themagazinecanbeloadedbyhand(Fig.24).Beforeloading,themagazinemustbewipeddry.

Whenloadingthemagazine,itshouldbetakenoutoftherifleandheldinonehand.Thecartridgesmustbeplacedbytheotherhandonthemagazinefollowerandpushedintothemagazinebythumbofthehandholding the magazine. Each of the next rounds is placed on to the previous round, but pushed into the magazinebodyinthesamemannerasthefirstround.


Fig. 24 - Loading the magazine

PARTII.FunctioningoftheRifleandTroubleshooting,Storage,Inspections,Maintenanceand Repairs

CHAPTER 1 - FUNCTIONING OF THE PARTS AND MECHANISMS OF THE RIFLE 1. Preparing the rifle for shooting

Beforefiringariflewhichhashadalayerofvaselineappliedforalongorshort-termperiod, itmustbecleanedandthepreservingagentremoved.Theriflemustbethendisassembledandallpartsallwipeddry.Afterwards,theassembledrifleshouldbepreservedwithaqualitygunoil.

Directlypriortofiring,wipedrytheboreandthecartridgechamber.

Whendisassembling,cleaningandassemblingtherifle,allthecomponentsshouldbeinspectedandcheckedtoseewhethertheyareworntoanexcessivedegree,battered,brokenordamagedinsomeotherway.Whenassembling,thefunctioningoftheparticularmechanismsshouldbechecked.Specialattentionshould be paid to checking the functioning of the assembled trigger mechanism, the reliable functioning of the safety catch, to the disconnector, to the sear and the condition of the magazine.

Aftercompletelyassemblingtherifle,thefunctioningoftheboltshouldbecheckedbyhandcocking.Properfeedingischeckedbychargingtheriflewithafewpracticeroundsfromthemagazine(byhandcocking).

Therifleismadereadyforfiringbyinsertingtheloadedmagazineintothemagazinewellofthereceiverandcockingthegunbymovingtheboltintotheextremerearpositionfromwhichitisreleasedwithoutholdingthebolthandleanylongerorbymovingtheboltforwardbyhand.Duringthisoperationthefingermustbeoffthetrigger.Thesafetycatchshouldbeturnedintoitsforward(fire)positiononlypriortofiring.

21.FunctioningoftheRifleandTroubleshooting,Storage,Inspections,MaintenanceandRepairs

Fig. 25 Position of the parts in loaded rifle


2. Functioning of the rifle parts

Firing

Onemayopenfireatanobjectaftersettingtherearsighttoanappropriaterangeoffireandafteradjust-ingthesafetycatchwingintothe“fire”position,i.e.forward.

Whenturningthesafetycatchwingintothepositionforfiring,thesafetycatchengagesthedisconnector,byputtingitintothesafetycatchgroove,withthesear.Thedisconnector,whichisbeingconstantlypushedupbyitsownspring,hooksthesearandcontrolsitsloweringandlifting.

Bysqueezingthetriggertowhichthedisconnectorispivoted,thesearisloweredandthestriker,whichisunderthepressureofitsspring,isreleased.Thestrikerthushitsagainstthefiringpinwhichinitiatesthecartridgeprimerinthecartridgechamber.Thecombustionofthepowderthatfollowscreatesgases,thepressureofwhichsendsthebulletintothebarrel.Assoonasthebulletpassesthegaschannelofthebarrel,aportionofthepowdergases,penetratesintothegascylinder,whereithitsthepistonhead,thussettingitinabackwardsmotion.Thepistonstrikesthefaceoftheboltcarrierthussendingittoitsrearposition. The piston is, nevertheless, retained by bearing its conical surface against the face of the recess and returned by the piston spring to the original position. At this time, the bullet has already left the barrel andthepressureinthebarrelhasdecreased.Withitsunlockingtip,theboltcarrierthenpullsthelockingpiece from the locked position. The locking piece folds into the recess in the bolt carrier over the unlock-ingtip.Fromthismomenton,allthecomponentsoftheboltmovetogetherbackwards.Thebeginningofthemotionoftheboltcoincideswithbeginningtheextractingofthefiredcartridgecasefromthecartridgechamber.Thefiredcartridgecaseispulledbytherimofthebasebytheextractorclawuntilthemomentwhenthebottomrimofthecartridgecasebasestrikestheejectorandthecartridgecaseisthrownoutoftherifle’sreceiverupwardstotheright.

Meantime,boltcarriersideplaterunsontothedisconnector’sluganddepressesthedisconnector,thusdis-engaging it from the sear so that the sear is lifted up through the action of the arm of the trigger mecha-nism feather even if the trigger is squeezed.

Assoonastheboltmovingbackwardshasruntoitsextremerearposition,theboltcarrierstrikesagainstthereturnmechanismbase,stopsitsmotionandthewholeboltassemblythenreturnstoitsfrontposition,beingactuatedbythereturnspring.Thestrikerbeingdrivenbythestrikerspringcatchesthesearwithitsnose. The ramming lug of the bolt pushes the top round out from the magazine feed lips and rams it into thecartridgechamber.Thebaseofthecartridgecasebearsagainsttheboltheadpocket,atwhichtheextractorclawsnapsintothegrooveofthebaseofthecartridgecase.Duringtheboltcarrier’sforwardmo-tion, the locking piece falls into the receiver lugs and locks its position.

Inordertofirethenextshot,itisnecessarytoreleasethetriggerandsqueezeitagain.

Theriflemaybelockedagainstanunintendedshotbyadjustingthewingofthesafetycatchintotheverti-calposition.Wheninthisposition,thesafetycatchdisengagesthedisconnectorfromthesear,preventingitfromloweringandthusreleasingthestriker.Inthisfashiontherifleisnotcapableoffiringiftherifle’ssafety is in the locked position.

Thismodeoflockingdoesnotinanywayrestrictthenormalfunctioningoftheotherpartsoftheboltwiththeexceptionofthestriker.Itisconsequentlypossibletoloadaswellasunloadthecartridgefromthechamberwhentheweaponislocked.


Ceasingfire

Ceasingfiremaybetemporaryorpermanent.

Firingistemporarilyceasedautomaticallyaftereveryshot,regardlessofwhetherthetriggerisreleasedorsqueezed;thenextsingleshotmaybefiredonlybysqueezingthetriggeragain.

Afterfiringthelastcartridgefromthemagazine,theboltremainsintherearposition;afterre-placingtheemptymagazinewiththefulloneandpullingtheboltcarrierbackwardsbyitscockinglever,theboltcatchisreleased(forthefollowerpushingthecatchupisdowninthemagazineagain)andfiringmayberesumed.

Incaseoftemporaryinterruptionoffire,theriflewillbelockedagainstanunintendedshotbyturningthewingofthesafetycatchdownwards,asthecartridgechamberhasacartridgeinsideitand the striker is in the rear cocked position. Firing may be reopened immediately after adjusting thesafetycatchwinginto“Fire”position. Terminationoffiringandunloadingtherifle

Afterterminatingfire,theriflemustbelocked.Whenunloadingtherifle,takeoutthemagazine(Fig.27)andthroughcockingthebolt,ejectthecartridgefromthecartridgechamber.Thenad-justthesafetycatchwingintheposition“Fire”,pulltheboltbyitscockingleverbackwardsandwiththetriggerbeingsqueezed(releasingthestriker),lettheboltgotothefrontposition(toreleasethestrikerspring).Thenre-locktheassaultrifle.Taketheremainingcartridgesoutofthemagazineandslidetheemptymagazineintotherifle.

CHAPTER 2 - TROUBLESHOOTING

1. General rules for preventing malfunctioning

Therifleisareliabletrouble-freefirearmifcorrectlyhandled,carefullyoperatedandmaintained.Nevertheless,iftherifleisexposedtolong-lastingactivity,troublesinfiringmayoccurduetowearorbreakstosomeofthecomponents,duetodirtintheriflemechanisms,defectivecartridg-es,carelesshandlingorinsufficientmaintenanceoftherifle.Theabove-mentionedcircumstancesaffectthenormalfunctioningoftherifleandcanresultinmalfunctionsandtroubleswhenfiring.

Mostmalfunctionsandtroubleswhichoccurwhenfiringtheriflemaybeeasilysolvedbysimplerepeat-ing–pullingtheboltcarrierbythecockinglevertoitsrearposition;ifamalfunctionisnoteliminatedbyrepeatingor,ifeliminated,itre-occurs,itisnecessarytounloadtherifleandfindthereasonbehindthemalfunction.

In order to prevent malfunctions in firing, it is necessary:

-tostrictlyfollowtheinstructionsregardingmaintenance,disassembling,assembling,cleaning, inspectingandpreparingtherifleandcartridgesforfiring;-toprotectthecomponentsandmechanismsoftheriflefromdirt;-nottouseforcewhenremovingmalfunctionswhichmightcausedamagetothecomponents;-tocarefullyinspectthecartridgesandmagazinesbeforeloadingthemagazines.Donotload magazineswithdefectiveorrustycartridges,wipethecartridgesandremovepossibleimpurities withadryclothbeforeloadingthemagazines;-tooilthecomponentsthatworkagainsteachotherduringtheirfunctioningbeforefiring;clean anddrytheboreandthecartridgechamber;-tocheckfromtimetotimetheconditionoftheriflecomponentsandmechanismsatbreaksin firing,removethickenedlubricantandimpuritiesoffthefrictionsurfaces;re-oilthefriction surfacesaftercleaningthem;-tocarefullyprotecttheriflefrompenetrationofimpurities(dust,sand,earth)intothemuzzle whenfiring,whenonthemoveandwhentakingfiringpositions;protecttheriflefromimpact

2. Typical malfunctions, their causes and solutions

Kindsofmalfunctionsandtroubles,theircausesandwaysofmethodsofremedyareindicatedinthebelowtable:


Malfunction Cause Remedy

1. Misfiring No shot after squeezing the trigger

1.Damagedfiringpin,ifthere is no dimple on cartridge primerleftbyfiringpin impact

2. Fatigued or broken striker spring,ifpoortraceoffiring pin on cartridge primer

3. Defective cartridge

1.Replacefiringpin

2. Replace striker spring

3. After a lapse of about 10 seconds(dangerofdelayed ignitionofpowdercharge), by hand recharging, eject the cartridge from the chamber. Inspect the ejected cartridge and if the primershowsadequate dimple caused by strike of firingpin,replacethe cartridge

2. Piston is not returned to front position

Fatigued or broken pistonspring

Replace piston spring


3. Half-closed bolt Bolt carrier does not bear against the face of the receiver

1. Dirty bolt

2.Defective(deformed) cartridge

3. Dirty cartridge chamber

1. Disassemble the bolt, clean it and oil it

2. By hand recharging eject the cartridge from the cartridge chamber

3. Clean the cartridge chamber

4. Cartridge not fed 1. Dirty interior of magazine

2. Brokenmagazinewallsor broken magazine feed lips

3. Fatigued or broken spring ofmagazinefollower

4.Shortrecoilofbolt- dirtyrifle

1. Disassemble and clean the magazine

2. Replace the magazine 3.Replacemagazinefollower spring

4. Disassemble and clean therifle

5. Cartridge case does not extract

1. Broken extractor spring

2.Broken-offextractorclaw

1. Replace extractor spring

2. Replace the extractor

6. Cartridge case does not eject

1. Short motion of bolt backwards-dirtyrifle

2. Broken piston

1. Disassemble and clean therifle

2. Replace the piston

7. Cartridge jumps out of the magazine

Magazinefollowerspringistoo strong or feed lips are broken

Replace the magazine

8. Bolt is not retained by bolt catch after firing last round

1. Defective magazine or its spring

1. Replace the magazine or its spring

If the above-mentioned malfunctions cannot be fixed or if any other malfunctions reoccur, the rifle should be sent for repairs to an authorized gunsmith appointed and approved by the manufacturer.

CHAPTER 3 - STORAGE

1. Storing the rifle

Therifleshouldbedepositedinaverticalpositionwiththemuzzleuporinahorizontalpositioneitheronariflerackoronashelf.Itcanalsobesuspendedbythesling.Theboltshouldbeinthefrontposition,thestrikerreleasedandthesafetycatchwinginthevertical(locked)position.Themagazinesshouldbeputinthe magazine pouch and other accessories in cleaning kit bag.

Whentransported,therifleshouldbeplacedinaspecialtransportboxorbaginordertopreventitfromdamage.Ifinadequatepackagingisusedwhentransportingtherifle,itisofutmostimportancetoprotectthesightdevicesagainstdamagebywrappingthefrontsightandrearsightinragsandfillingtheemptyspaceintheboxwithragsinordertopreventtheriflefrombeingbatteredabout.

In any of the mentioned modes of deposition, the rifle must not be loaded!

Thedepositedriflemustbeconstantlykeptsafeandthekeysfromthelocksoftheracks,shelves,cabinetsorsafesholdingtheriflemustbekeptinasecureplace.

Do not plug the borewithpaper,ragsorotherobjectsregardlessofthestorageconditions,orbarrelbulge or additional damage may occur.

Afterterminatingshooting,riflemustbecleanedeachtime.Specialattentionshouldbepaidtocleaningoftheboreandcartridgechamber.Allaccessoriestotheriflemustbekeptingoodcondition,cleanandap-propriately deposited.

CHAPTER 4 - INSPECTION OF THE RIFLE

1. Principles of inspection of the rifle

Regularinspectionsoftheassembledanddisassembledrifleshouldbecarriedoutregularly.Theextentofdisassemblingshouldbedeterminedbytheinspectingperson.Theowneroftherifleshouldinspectitbefore leaving for the shooting range and during cleaning.

Alongwiththeinspectionoftherifleallspecifiedrifleaccessoriesshouldbeinspected. Whennotusedtheassembledrifleshouldbeinspectedonceamonth.Oninspectionoftherifle,itisnecessarytocheck:

-whetherthereisanyrustytintonthemetalpartsofrifle,whetherthemetalpartsaresoiled, batteredorscratchedandwhetherthewoodenpartsoftheriflehavesplitorcracked.-whetherthefrontsightorrearsightaredamaged,whetherthesightinggaugemarksare oppositeeachother,whetherthefunctioningoftheslideandtherearsightplungeriscorrect;-whetherthemagazinesareundamaged


Inspection of the assembled rifle

Wheninspectingtheassembledrifle,itisnecessarytocheck:

a)The functioning of the bolt:Oncockingthebolt,themotionofthecomponentsmustbetrouble-free,withoutseizingup,withconsiderableresistanceonthepartofthereturnspring.Onreleasingthebolt,thismustmoveenergeticallyforwardsatwhichtheboltcarriermustrunasfarasitsextremefrontposition and lean against the face of the receiver. Ifanemptymagazineisshiftedintotherifle,theboltcatchmustretaintheboltintheopenpositionwhentheboltmovesforward.Correctnessoffeeding,extractingandejectingmaybeverifiedbyhandchargingatwhichthemagazine,insertedintherifle,isloadedwithpracticerounds.Inthisway,thefunctioningofthemagazine,oftheextractorandoftheejectormaybeverified.Atthesametime,thefunctioningofthemagazinecatchisverified.Wheninsertingthemagazineintotherifle,themagazinecatchmustaudiblysnapinbehindtheprojectionattherearedgenearthemagazinefeed lips. If not depressing the magazine catch, the magazine must not be released from the receiver.After checking the functioning of the bolt, the striker spring should not remain depressed.

b)The functioning of the trigger mechanism: The functioning of the trigger mechanism should only be checked when using practice cartridges. Insertapracticeroundintothecartridgechamberbyhandcharging;thesafetycatchwingisadjustedtothe“Fire”position.Inthepositionofthesafetycatchwing,thestrikermustbereleasedbysqueezingthetriggerandaudiblystrikingthefiringpin.Ifthesafetycatchwingisadjustedinthe“Safe”position,i.e.,downwards,thestrikermustnotbereleaseduponsqueezingthetrigger.Whenadjustinganyofthetwopositions,thesafetycatchmustbeturnedtosuchadegreethatanaudibleclickisheard;tochangethepositionofthewing,acertainforcemustbeexerted. c)The correctness of the rear sight and the front sight:Itisnecessarytocheckwhethertherearsight leaf is lacking side clearance and is not bent. If the plunger is depressed, the slide must easily move alongtheleafandmustbeforceddownbytherearsightfeathertotherearsightrampinallpositions.Theplunger lug must be able to snap into all the notches on the leaf. Regardingthefrontsight,itisnecessarytoverifywhetheritisdamaged,whetherthesightinggaugemarksareoppositeeachother,andwhethertheadjustmentfortheheightofthefrontsightisnotimpaired(thismaybedeterminedfromtheintegrityofthedropofredlacquerinsidethefrontsightcover).

d)The functioning of the stock: It should be checked in order to assure that the stock is tightly se-curedtothereceiver,issteadyanddoesnotwobblesignificantly.Thestockshouldalsobecheckedforanycracks.

Inspection of the disassembled rifle

Beforeadisassembledrifleisinspected,allthecomponentsmustbewipeddry.Whentherifleisdisassem-bledallthecomponentsmustbecarefullyinspectedinordertodeterminewhethertheyarefreeofrust,whethertheyaresoiled,crumbledoff,battered,seizedorexcessivelyworn.Additionally,thecomplete-ness of the rifleshouldbeverified.


Defectivecomponentswhichrevealfissures,rubbed-outspots,excessivelywornactivesurfaces,strippedthreads,loosenedconnectionsorthosethataredeformedand/orbrokenmustbereplaced.

Wheninspectingthebore,itisnecessarytoliftthebarreltogetherwiththereceiveruptotheheightoftheeyesandturntheotherendofthebarreltowardthedirectionofthebestlight.Whileslowlyrotatingthebarrel, it is necessary to carefully inspect the grooves of the bore, starting from the muzzle to the direction ofthereceiver.Inorderthatthewallsoftheboremaybebetterseenalongallthelengthofthebarrel,itisnecessarytovarythedistanceofone’seyefromthemuzzle.

Wheninspectingthebore,thefollowingdefectsortroublesmaybediscovered:

-theremainsofburntpowderorrustthatappearsasadarktint.Rustorremaindersof burntpowderundistinguishablebytheeyemaybefoundoutbymeansofawhiteclothwhich willshowdarkbrownorblackspotsafterwipingthebore.Greyspotsintheborethatdonot leavespotsontheclothafterwipingtheborearenotafault; -rustthatappearslikedotsorsmalldropsonsomespotsoralloverthebore shallowdarkspotsthatremainafterderusting

-pitscausedbyrustarepitsinthemetal,visibletotheeye

-acoppercoatingwhichiscausedbyfiringwithprojectilesprovidedwithtombackjacket;they appear to the eye as a slight copper coat or bulge in the bore

-scratchesintheshapeofdashes,manytimeswithdistinctprolapsesofmetalonthebore surface

-rounding(wear,spallingofthechromelayer)offieldsmanifestingitselfparticularlyontheleft- handedgesofthefields;itoccursmostoftenbehindthecartridgechamberandnearthemuzzle

-darkspotsandanirregularsurfacebehindthecartridgechamber(spalledchrome),whichisa symptom of burning up the transition cone

-abulgeintheshapeofatransversaldarkring;ariflewithabarreldamagedinthiswaymust notbeusedforfiringunlesstherifleischecked.

-bendingofthebarrelthatmanifestsitselfasanirregularlengthofshadeintheborewhen rotatingthebarrel;batteredspotsontherearfacewallofthebarrel,andscratchesinthe cartridge chamber.


Wheninspectingthepiston and the gas adapter check:

-whetherthepistonheadisexcessivelyburntorbattered; -whetherthegascylinderisseizedorburntthroughandwhetherthereisnodeposit ofcarbonandimpuritiesontheinternalwalls; -whetherthepistonmovestrouble-freewithoutseizinginthegascylinder.

Wheninspectingthereceiver check:

-whethertheguidebars,groovesandtheactivesurfacesarescratchedorrubbedby pressing;aglossyappearancetothesurfacesoftheprojectionsonwhichthelocking piecelocksispermissible; -whethertheejectorisforcedin,brokenoffordisplacedinthegrooves; -whethertheboltcatchiscracked,brokenofforforcedin; -whetherthesafetycatchholderisbroken; -whetherthelacqueronthereceiverisscratchedoff; -whetherthepistonmovesfreelyalongtheguideintherearsightbase.

Wheninspectingthebolt check:

a)Bolt carrier:

-whethertheguidebars,groovesandactivesurfacesarescratchedorrubbedby pressing;inspectifthefacebearingsurfaceisrammeddown; -whetherchromelayeronthesurfacesandedgesisspalledorcrumbledoff

b)Bolt:

-whetherthecartridgecasebedandtheopeningforthefiringpinareburntoff; -whethertherearefissures,pitsormetallicdepositsaroundtheopeningfor thefiringpin; -whethertheactivesurfacesarerubbedbypressingorrammeddown; -whethertheendoftheopeningforthefiringpinisflattened,i.e.,whether thefiringpinpassesfreelythroughtheopeninginthecartridgecasebed;Pin mustshiftoutofbolt’sopeningwhentheboltisoverturnedbyitsown weightor,atthemost,whentappingslightlywiththeboltagainstthepalm; -whethertheextractorclawispressedwithsufficientforceintheboltcartridge casebed; -whethertheextractorisclampedbythewallsofitsgroove,i.e.,whetheritreturns, afterbeingdeflected,energeticallytotheinitialposition; -whethertheextractorhasfissuresorwhethertheextractorclawisbrokenoffor damagedinsomeotherway.

c)Locking piece

-whetheritmovesfreelyinthebearingsofthebolt; -whethertheedgesoflockinglugsarebatteredordeformedinsomeotherway; a glossy appearance of the active surfaces of the locking lugs and of the upper (glide-over)surfaceispermissible; -whetherthelockingpiecetiltsoverbyitsownweightintothelockedposition; -whetherthechromelayeronthesurfacesoredgesisspalledorcrumbledoff.



d)Striker:

-whetherthenoseofthestrikerheadiswornouttoexcess; -whetherthestrikerpassesfreelythroughtheopeningintheboltcarrier.

Wheninspectingthetrigger mechanism check: -whetherthetrigger,disconnectorandsearpivotarefreeontheirpins; -whetherthearmofthetriggermechanismfeatherisbrokenorbentandwhetheritis inthecorrectpositionunderthesear; -whethertheseariswornouttosuchanextentthatitdoesnotcatchthestriker reliably.

Wheninspectingthestock and front handguards check: -whetherthewoodenpartsarecracked,batteredordeformedinsomeotherway; -whetherthestockisloosened; -whethertheswivelonthestockisloosenedordamaged;

2. Disassembling the rifle

Therifleisdisassembledforthepurposeofcleaning,preserving,forinspectionandwhenreplacingand/orrepairing its parts.

Therearetwowaysofdisassemblingtherifle:

-partialdisassemblingand -completedisassembling.

Partialdisassemblingoftherifleiscarriedoutbytheownerforthepurposeofcommoncleaning,preserv-ing and inspecting.

Completedisassemblingoftherifleisonlycarriedoutwhenreplacingandrepairingitspartsatanautho-rizedgunsmithworkshop.

Disassemblingandassemblingtoofrequentlyharmstherifleasthewearonitscomponentsisaccelerated.

Whendisassemblingandassemblingtherifle,thefollowingrulesmustbeobserved:

-Disassemblingandassemblingoftherifleshouldbecarriedoutonatableorbench;wheninthe field,thisshouldbecarriedoutonacleananddrysheet.

-Everytime,beforedisassemblingtherifle,themagazineshouldbetakenoutandmadesure there is no cartridge in the cartridge chamber.

-Whenseparatingandassemblingthecomponents,handlethemwithcare,donotuseforceasit could cause damage.

Therifleisdesignedsothatallthecomponentsandmechanismsmaybeeasilytakenoutfromandinsertedbackintotherifle.Forthisreasonnoothertoolsshouldbeusedfortakingoutandinsertingcomponentsandmechanismsoftherifleotherthantheneedle,otherwisethecomponentscanbedamaged.

For common maintenance of the rifle it is sufficient to remove the upper handguard, take out the piston with the spring, remove the return mechanism and take out the bolt.Thisallowsac-cess to the trigger mechanism. The rifle must be disassembled with its striker released.

Disassembling the rifle partially

Therifleshouldbedisassembledinthebelow-mentionedsequenceandextent(Fig.26):

1. magazine2. return mechanism3. bolt4. upper handguard5.pistonwithspring


Fig. 26 The Sa vz. 58 Military rifle in cal. 7.62 mm partially disassembled

a)Taking out the magazine(Fig.27):Holdtheriflebythegripwiththerighthandandgraspthefrontwallofthemagazinewiththelefthand.Leantheleft-handthumbagainstthemagazinecatchandpushitforward.Simultaneously,tiltthemagazineforwardinthedirectionofthebarrelandpullitoutfromthereceiver’smagazinewell.

b)Removing the return mechanism(Fig.28-29):Withthelefthandgrasptheriflefrombelowbythereceiverandbythethumboftherighthand,thepalmofwhichleansagainstthetopofthebuttstock,depresstheprotrudingendofreceivercoverpin.Thengrasptheknurledheadofthepinbytheright-handthumbandindexfingerandpullthepinouttotherightuntilanaudibleclickisheard.

Graspthetopofthebuttstockwiththerighthandandleantheright-handthumbagainsttherearwallofthereceivercover.Throughforwardpressureofthethumbandanupwardshift,movethebaseofthere-turnmechanismoutfromthereceiverrecess,andbypullingbackwards,pullallthereturnmechanismoutoftherifle(Fig.28).Oryoucanusetherighthandforholdingtheriflebythegripandplacethepalmofthelefthandonthetopofreceivercoverwiththumbbehindtherearendofthecover.Bypushingforwardandliftingup,thecovercanberemovedfromthereceiverandpulledout(Fig.29).


Fig. 27 Taking out the magazine

Fig. 28 Removing the return mechanism Fig. 29 Removing the return mechanism

c)Taking out the bolt(Fig.30):Holdtheriflewithrighthandbythegriporfrombelowthereceiverandpointthemuzzletothegroundand.Withthelefthandusingthecockinglever,pulltheboltcarrierbackwardstoastop.Withtheuseofmiddlefingerandthethumb,taketheboltcarrieroutofthereceiver.Allthetimethewholeboltassemblyisbeingtakenout,itsfronthastobepointingdown,inordertopre-vent the striker from moving out of the bolt carrier shaft and bolt falling out.

Thentaketheboltcarrierbythelefthandandwiththerighthandgraspthestrikerbyitsheadandpullitoutoftheboltcarrier.Whiledoingthis,turnthestrikerslightlytotheleftuntiltheprojectionoftheboltcarrier passes through the cross groove to the neighboring through groove. Continue pulling the head of the striker, shift the striker completely out of the bolt carrier. The bolt is thereby released. Remove the lock-ingpiecefromtheboltbytiltingitupwards.

Fig. 30 Taking out the bolt


d)Removing the upper handguard:Depresstheprojectingpartofbarrelguardpin552withtherighthandthumb.Withtherighthandthumbandindexfingergraspthebarrelguardpinbyitsknurledhead and pull it entirely to the right. After shifting the barrel guard pin out, lift the rear part of the barrel guardupabit,withtherighthand,andtiltitupwardsinthedirectionofthemuzzle.Inthisway,thetipsofthe barrel guard are shifted out from the grooves of the gas adapter and the barrel guard may be removed fromtheweaponbypullingitbackwards.

e)Removing the piston(Fig.31):Holdtheriflefrombelowwithonehandandgraspthepistonwiththeotherhandandpushitbackwardstoastopagainsttheactionofthepistonspring.Thentiltthepistonupwardsfromthegascylinder.Inthisway,thepistonheadcomesabovetheupperwallofthegascylin-der;bypullingthepistonaskanceforward,takethepistonoutfromtherecessintherearsightbase.Ifthepistonspringhasnotbeenshiftedouttogetherwiththepiston,shiftitoutbyusingtherearendofthepiston.


Fig. 31 Removing the piston

3. Assembling the partially disassembled rifle Thepartiallydisassembledrifleshouldbeassembledinthefollowingorder:

a)Insert the piston with the spring:Shiftthepiston,withthespringoveritscylindricalpart,intherecessoftherearsightbaseaskancedownwardstoastop.Tiltthepistonheadtotheroundofthegascylinder and release the piston. Through the action of the spring the piston comes to its front position.

b)Put the upper handguard on: Make the tips of the upper handguard front hoop snap into the grooves on the gas adapter and tilt the upper handguard. Shift the upper handguard pin completely to the left. The upper handguard is thus locked against falling out.

c)Assemble the bolt:Mountthelockingpiecewithitsjointsintothebearingsofthebolt.Inserttheboltintherecessintheboltcarriernearthebridge.Shiftitforwardinordertoengagethegroovesinthecarrier. Shift the striker in the bolt carrier so that the gauge mark on the striker is opposite the gauge mark ontherearwalloftheboltcarrier.Thenturnthestrikerbythewholelengthofthegaugemarktotherightand shift it to a stop in the bolt carrier.

d)Put the bolt carrier into the receiver:grasptheassembledboltcarrierwithonehandsothatthethumbleansagainstitsrearfaceandthemiddlefingeragainstitsfrontface.Holdtheriflefrombelowwiththeotherhandbythereceiverwiththemuzzlepointingslightlydownwards.Inserttheboltcarrierfromaboveintherearpartofthereceiver.Shifttheinsertedboltcarrierasfarforwardaspossible.Thestrikerwillremainretainedbythesear.Setthesafetycatchto“Fire”positionandsqueezethetrigger;thestrikeris then released by the sear.

e)Insert the return mechanism: First of all, partially shift the return spring in the cavity of the bolt carrierandthenthestikerspringintheopeningofthestriker.Pushthefrontpartofthecoverdowninor-dertoengagethegroovesintheboltcarrierandbypushingforwardsanddownwardsshifttheprojectionof the base in the recess in the rear part of the receiver. Lock the return mechanism by shifting the pin of the receiver cover to the left until an audible click is heard.

CHAPTER 5 - MAINTENANCE

1. The main principles of rifle maintenance

Oneoftheconditionsforreliablefunctioning,accuracyoffireandtheservicelifeoftherifleiscorrectandtimelycleaningandpreservingaswellasinspections.Theriflemustalwaysbekeptingoodorderandclean.

MaintenanceandcareoftheSavz.58Militaryrifleisdividedinto- dailycare,- andmonthlycare.

Daily careoftherifleshouldbecarriedoutassoonaspossibleaftershooting.Theextentofthecareisdeterminedaccordingtotheneedswhichdependeontheconditionsoftheshooting,fromtheweatherconditionsandthelike.Afterreturningfromshooting,therifleshouldbepartlydisassembledandallthemainpartscompletelycleaned.Overthefollowing3to4days,checktherifleforrust.If,indoingthis,itstillshowstracesofimpuritiesduetocombustionproductsorrust,thecleaningprocedureshouldbere-peated. Onlyafterpropercleaningandwipingtherifledry,itcanbepreservedwithoil.

Monthlycareshouldbecarriedouteveniftherifleisnotfiredwithinthistime.Atmonthlychecks,therifleshouldbecheckedforanypossibleruststainsandsufficientoilpreservation.

Iftheabove-mentionedprinciplesareobserved,anyinadequatedeteriorationofthetechnicalconditionoftheriflecannotoccur.

2. Cleaning and preserving agents

Whencleaningandpreservingtherifle,onlyspecifiedcleaningandpreservingagentsofhighqualityshouldbe used.

To cleantherifleonlythefollowingmaterialshouldbeused: -cleansoftrags(coloredaswellaswhite)tocleanandpreservethecomponents -brassborebrush -cottonpatches -highqualitygunoil -horsehairbrush(partoftherifleaccessories). -toothbrush

To preserveriflesthefollowingshouldbeused: -RIGtoprotectthemetalpartsoftherifleagainstcorrosion.Thisproductmaybeused all year. -gunoiltolubricatethefrictionsurfacesintheriflethatareinuse

The cleaning agents must be protected from dust and moisture contamination.


3. Procedure in cleaning and preserving the rifle

Afterfinishingshooting,therifleshouldbepartiallydisassembledforcleaning.Completedisassemblingoftherifleforcleaningisonlynecessarywhentherifleisstronglysoiledorwhenithasbeenexposedforalongerperiodtomoisture,snowandthelike.Completedisassemblingoftherifleforthecleaningpurposesshould only be carried out by an authorized gunsmith.

Whencleaningandpreservingrifleparts,itisnecessarytoproceedasfollows:

a) Theboreshouldbecleanedfromthesideofthemuzzle.Inordertodothis,onemustunscrewbothpartsofthecleaningrod.Shifttheendofthecleaningrod,providedwithanannulargroove,inthelongitudinalopeningintheunscrewedoilcanplugandlockitbytheneedlewhichmaybepushedthroughthetransversalopeningintheoilcanplugsothatitcanpasswithacertaindifficultythroughtheborebe-ingcleanedandsoitfillsthegrooveswell.Thensoakthepatchingunoilandrunitthrutheboreseveraltimes. Then slip the muzzle cap over the thread protector and move it around a slight amount so that the threadprotectorsafetycatchsnapsinthecut-outofthemuzzlecap.Graspthecleaningrodbytheneedleandtheplug,andcontinuouslywithoutanyforcedrawthecleaningrodseventotentimesalongallthelength of the bore. After this, remove the muzzle cap and pull the cleaning rod out.

Thenremovetheoiledclothoffthecleaningrodandpulladrycleancloththrough.Thecleaningwiththeclothshouldberepeatedseveraltimesiftheclothshowsbrownorblackspotsduetorustorcombustionproducts.Ifthosespotsappearevenafterwipingthebarreloutseveraltimeswiththecloth,itwillbenec-essarytorepeatthecleaningwiththeaidofacleaningagentandthenagainwipetheboredrywithcleanpatches.

Whenhavingdrawnthecloththroughforthelasttimetherearenolongeranytracesofcombustionprod-uctsfrompowder(blackorbrownspots)ortracesofrust,moveontocleaningthecartridgechamber.Inordertocleanthecartridgechamberandthegascylinder,screwtheoakumcleaningrodintotheoilcanplugfromthethreadlesssideoftheopening.Thencleanthecartridgechamberinthesamewayasthebore,atwhichtheoilcanwheninaverticalpositionservesasahandlefortheoakumcleaningrod.

Afterhavingfinishedcleaningtheboreandthecartridgechamber,pulloncemorealltheborethroughanddrywithcleanpatches.Thencarefullyinspecttheboreagainstthelightwhileslowlyrotatingthebarrelinyour hands. It is especially necessary to carefully inspect the edges of the grooves near the muzzle and nearthecartridgechamber,i.e.placesfromwhichimpuritiesarethemostdifficulttoremove.Inordertochecktheconditionofthecartridgechamberandthatofthebore,areflectingmirrorcanbeused.

If the inspection demonstrates that the bore and the cartridge chamber are completely clean, immediately applyaslightlayerofpreservingRIG.DrawapatchsaturatedwithRIGintothecut-outofthecleaningrod.Thepatchmustbeofsuchashapesoastopasseasilythroughthebore.Thendrawthecleaningrodtwotimes to three times continuously through all the length of the bore so that the preserving agent may fully adheretothegroovesandfieldsoftheboreandtothoseofthecartridgechamberandformathincon-tinuous layer.

Excessivelylubricatedpartsgetquicklycontaminatedwhichiswhyitisnecessarytoapplyonlyafinelayerofpreservingagentbymeansofagreasyrag.Whenlubricatingtherecesses,groovesandgaps,itisnec-essary to roll the patch round a stick.

Preservingtheborewithanoilgunprotectsitagainstcorrosionforonlyafewdays.

Ifthewipeddryboreisleftwithoutapreservingagentformorethananhour,itgrowsdampduetotheef-fectofambientair.Thepreservingagentmustnotbeapplieduntiltheboreisre-wipedoutdrywithacleandry cloth.


Ifrustisfoundduringthecleaning,softenitwithacleaningsolution,withkeroseneorapreservingagentandthenwipeitoutwithacleanpatch.Iftheremainsofpowdercombustionproductsandrustcannotberemovedfromtheboreintheabove-mentionedway,therifleshouldbegiventoanauthorizedgunsmith.

b)Thegascylindershouldbewipedoutwithapatchsaturatedwithacleaningagentandthenwipedoutdry.Cleaningshouldcontinueuntilalldepositsofpowdergasesareremoved.ThegascylinderwhenwipeddryshouldbepreservedwithathinlayerofRIG.

c)Whencleaningthepiston,payattentiontothedisposalofdepositsfromthecircumferentialgrooveonitshead.Afterwashinginthecleaningagent,thepistonshouldbewipedwithoil.Afterremovingtheimpurities,thepistonshouldbewipeddrywithacleanragandpreservedwithathinlayer of RIG.

d)Thereceiver,theboltandthenon-disassembledtriggermechanism,therearsightandthereturnmechanismmaybecleanedbymeansofwoodenstickswrappedwithragssoakedinthecleaninggunoil;openings,grooves,cut-outsandrecessesshouldbecleanedwithpointedwoodsticks.Aftercleaning,thecomponentsshouldbewipeddrywithacleanragandpreservedwithalightcoatofRIG.Alsoofimpor-tanceforchecking,aftercleaningthenon-disassembledtriggermechanism,iswhetherthepositionsofthetrigger mechanism components are correct, especially the positions of the arm of the trigger mechanism feather.

Allcomponentsstronglysoiledwithpowdercombustionproductsshouldbeimmersedinthecleaningsolu-tionforaperiodofuptohalf-an-hour;theremaindersofthecleaningsolutionmust,however,bedisposedof carefully. Cleaning gun oil or its emulsion should not be left in the bore.

e)Thewoodenpartsoftherifle,i.e.,thestockandupperandlowerhandguardsandmagazinesshouldbewipedwithamoistclothandthenwipeddrywithacleandrycloth.

f)Thelacqueredpartsoftherifle,suchastheexternalsurfaceofthebarrelandreceiver,thatoftheboltcarrier,triggerguardandreturnmechanismcovershouldnotbepreserved;theyshouldbewipedwithaoilyclothandthenwipedwithacleandrycloth.

Afterhavingappliedthepreservingagent,therifleshouldbeassembled.Ifthepreservingagentgetswipedoffatsomepointsduringassemblyoftherifle,itwillbenecessarytorestorethepreservingagentlayer.

CHAPTER 6 - REPAIRS

1. Repairing the rifle

TherifleownershouldonlycarryoutminorrepairswithinthescopeofrepairsofmalfunctionsdescribedintheTroubleshootingsectionofthismanual(PartII–Chapter2).

Anyotherrepairsshouldbeperformedbyanauthorizedgunsmithonly.Noncompliancewiththisrulemayresultinseriousdamagetotherifleortheowner’shealth.


38.Zeroingandzeroing-inoftherifle

PARTIII.Zeroingandzeroing-inoftherifle

General provisions

Allriflessuppliedtobuyershavealreadybeenzeroedinbythemanufactureroftherifle.

Thezeroingoftherifleshouldbecheckedif:a) afterbuyingtherifle:-innewriflesonlyincaseofasuspicionthatthefactoryzeroingwasimpaired-inoldrifleseverytime

b)wheneverunusualdeviationsinhitsorunusualdispersionarefoundoutduringfiring

c)afterreplacementofcomponentsorafterrepairsthatmightimpairthezeroing.

Riflesareagainalsozeroedinaftermajorrepairsbyanauthorizedgunsmith(replacementofthebarrel,rearsightandthelike)whichimpairthezeroing.

Beforecheckingthezeroing,theriflemustbecarefullyinspectedandrepairedifnecessary.Theriflebarrelmustbewipedoutdrybeforefiring.

Thecheckingofthezeroingshouldbecarriedoutunderweatherconditionsthatarefavorableforfiring(onwarm,windlessandcleardays)inanopenshootingrangeprotectedagainstwindorinaindoorshootingrange.

Tocheckthezeroingandtozeroin,only7.62x39mmBallcartridgesshouldbeused.Allcartridgesmustbe of the same production series.

Theriflezeroingshouldbecheckedatarangeof100meters,forwhichtherearsightissettotherange“3”.Firingiscarriedoutonatargetofatleast1meterinheightand0.5metersinwidth.Thezeroingsheetisfixedtoatarget.

The zeroing sheet(Fig.32)isablackrectangleof35cminheightand25cminwidth.

Theaimingpointisthemiddleofthebottomedgeofthezeroingsheet(ablackrectangle)whichistobeapproximatelyonalevelwiththerifleman’seye(onthelevelofthebarreloftheriflebeingchecked,whensighted).

The normal position of the mean point of impact should be marked on a vertical linepassingthroughtheaimingpoint.Thismeanpointofimpact,whentherearsight is set to 3, is to be at a height of 28 cm above the aiming point and is, si-multaneously, the checking pointwhendeterminingtheaccuracyofthezeroingoftherifle.Aroundthechecking point, a checking circle of 10 cm in diameter is circumscribed.

Fig. 32 Zeroing sheet


Firingisdoneinapronepositionwithsupport.Abagfilledwithsandcanbeusedasasupport.Whenfir-ing,thelefthandholdingtheriflemustrestonthebag.

Procedure in checking rifle zeroing and zeroing in

Thezeroingriflemanloadsthemagazinewith4cartridgesandfires4shots,accuratelyandsteadilyaimedatthemiddleofthebottomedgeoftheblackrectangle,whileduringfire,neitherthepositionoftherifleman’sbodynorthatofhislefthandarechanged.

Afterterminationoffiring(ofthose4shots),thetargetisinspectedandthedispersiongroupingandtheposition of the mean point of impact evaluated. The rifle is considered as zeroed in if all the four hits -inanextremecase3ofthehits(ifonehitshowsagreatdeviationfromtheothers)–maybecoveredwithacircle of 18 cm in diameter and if, at the same time, the mean point of impact is not deviated by more than 5 cm to any side from the checking point.

Determination of mean point of impact

Determination of the mean point of impact on the basis of the four hits /impacts/(Fig.33).

Forasymmetricaldispersionofthehits,themeanpointofimpactmaybedeterminedbyoneofthefollow-ingmethods:

a) jointwoandtwohitswithstraightlinescrosswise;thepointofintersectionofthetwostraightlinesisthemeanpointofimpact(Fig.33a)

b)joinbymeansofstraightlinesalwaystwoandtwohitssothatthestraightlinesdonotcrosseachother.Bisecteachofthestraightlinesintotwohalvesandjoinagainthebisectingpointsbymeansofastraightline.Themiddleofthisstraightlineisthemeanpointofimpact(Fig.33b).

Fig. 33 Determination of the mean point of impact on the basis of the four hits /impacts/

a b c

2

1

3

Fig. 34 Determination of the mean point of impact on the basis of the three hits /impacts/

Foranasymmetricaldispersionofthehits,themeanpointofimpactshallbedeterminedasfollows:1) jointwoarbitraryhits/impacts/withastraightlineandbisectthedistancebetweenthem

2) jointheobtainedpointwiththethirdhitanddividethedistancebetweentheminto three equal sections

3) jointhedividingpointthatisclosertothetwofirsthitswiththefourthhitanddivide thedistancebetweenthemintofourequalsections;thethirddividingpointstarting fromthefourthhitisthemeanpointofimpactsearchedfor(Fig.33c).

Ifoneofthefourhits/impacts/isconsiderablydeviatedfromtheothers,donottakeitintoaccountanduse three hits method.

The mean point of impact on the basis of the three hits(Fig.34)shallbedeterminedasfollows:1) joinanytwoofthehitswithastraightlineandbisectthestraightline

2) jointhemiddleofthisstraightlinewiththeremainingthirdhit

3) dividethisnewstraightlineintothreeequalsections;thedividingpointthatiscloser totheconnectinglineofthefirsttwohitsisthemeanpointofimpact.


Ifthehits/impacts/cannotbecoveredwithacircleof18cmindiameterorifthemeanpointofimpactisdeviated from the checking point to any side more than 5 cm, but not more than 12 cm, the cause of such a great dispersion or the cause of great deviations of the hits from the checking point should be found. Af-terfindingoutthecause,theauthorizedgunsmithshouldrepairtherifleandthefiringshouldberepeated.Iftheresultoftherepeatedfireisagainunsatisfactory,i.e.thehits cannot be covered with a circle of 18 cm in diameter or the mean point of impact is deviated from the checking point more than 12 cm,therifleshouldbetakentoaauthorizedgunsmithtobezeroedin.

Ifthedispersiongroupingoftheriflecomplieswiththespecifiedcondition(thehitsmaybecoveredwithacircleof18cmindiameter),butthedeviationofthemeanpointofimpactfromthecheckingpointisgreat-erthan5cm,butnotexceeding12cm,therifleshouldbetakentoaauthorizedgunsmithtocarryout,independence on the position of the mean point of impact, an appropriate displacement or correction of the frontsightforheight.Thefrontsightshouldbescrewedinabit(lowered)ifthemeanpointofimpactissituatedbelowthecheckingpoint,oritshouldbeunscrewedabit(raised)ifthemeanpointofimpactisabovethecheckingpoint.Thefrontsightpinshouldbedisplacedtotheleft(totheright)ifthemeanpointofimpactisontheleft(ontheright)fromthecheckingpoint.Byvaryingthepositionofthefrontsightandthroughrepeatedfiringsuchapositionofthefrontsightmustbeobtainedatwhichthedeviationofthemean point of impact from the checking point to any side does not exceed 5 cm.

Changingoftheheightofthefrontsightpinby1turn(0.5mm)ordisplacementofthefrontsightpintothesideby0.5mmchangesthepositionofthemeanpointofimpactby14cmwhenfiringat100meters.

Ifboththedispersiongroupingandthepositionofthemeanpointofimpactcomplywiththeabove-men-tionedrequirements,thecheckingoftheriflezeroingisfinished.

Ifthesidepositionofthefrontsightwaschangedwhenzeroingintherifle,anewgaugemarkonthefrontsight pin opposite the gauge mark on the front sight holder should be made. The old gauge mark on the frontsightpinshouldberemoved.Itisforbiddentostampanewgaugemarkonthefrontsightholder.Ifthepositionfortheheightofthefrontsightwasimpaired,adropoflacquershouldbeappliedagain.

Theresultanddataofthezeroing(checkingofzeroing)oftherifleshouldbewrittenonthezeroingsheet.

Rifle malfunctions and troubles impairing the zeroing

Inthecourseofusingtherifleorduringthecheckingofthezeroing,thefollowingmalfunctions,duetodisplacementofthemeanpointofimpact,mayoccur:a) Sidedisplacementofthefrontsightpin,frontsighttopbentorimpairedbyimpact –projectilesdeviatetothesidewhichisoppositetothatofthefrontsightdeviation.

b) Bentorbeveledrearsightleaf–projectilesdeviatetothesidetowhichtheback sight notch is deviated.

c) Muzzleofboredamagedbyimpact–projectilesdeviatetothesidewhich isoppositetothatwiththemuzzledamage.


Dispersionenlargementmaybecausedbythefollowingmalfunctionsortroubles:a) Sidewobblingoftherearsight;aftereveryshot,theleafmaybeinadifferent position,thuscausingenlargementofthedispersionforwidth.

b) Wobblingoftherearsightslide:theplungerlugdoesnotretaintheslideinasteady positionontheleaf;whenfiring,theslidespontaneouslychangesitspositiononthe leaf, thus causing enlargement of the dispersion for height.

c) Worn-out(widened)boreinboththemuzzleandthecartridgechamber.

d) Worn-out,roundedorcrumbled-offedgesofthefieldsofthebore.

e) Rustybore,pitscausedbyrust,scratchesinthebore.

Therifleshallbezeroedinby8shotswhen:a) themeanpointofimpactofthe8shotslieswithinacircleof8cmindiameter,with the checking point being the center of the circle

b) dispersionofthose8shotsmustliewithinacircleof20cmindiameterwhenmea suredfromthecentersofthemostdistanthits/impacts/.Ifoneofthehitsdeviates,itmay beomittedandthenthedispersionisthatmadeofthesevenhits/impacts/, but this dispersion must not exceed a circle of 20 cm in diameter, either. Themeasuringshouldbedoneinthesamewayasinthepreviouscaseandthe position of the mean point of impact is determined from those seven shots. Asadeviatedhit/impact/isconsideredsuchahitthatismoredistantfromthemean pointofimpactmadeoftheremaining7shotsthanisthediameterofthecircle circumscribed for the remaining seven shots

c) correctionofthefrontsightispermissiblewithintheextentofthedeviationofthe longitudinal axis of ± 0.5 mm and ± 1 mm for the height from the mean value of thefrontsight(54.6mmwhenmeasuredfromtheoppositeprojectionsofthefront sightholder).

The rifle is considered as zeroed if the mean point of impact lies within a circle of 8 cm in diameter and if it is possible to cover all 8 (or 7) hits /impacts/ with a circle of 20 cm in diameter.


Sa vz. 58 Military Rifle Instructions Manual - CZ-USA...

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