8/3/2019 6.4L Lubrication System

1/721

Lubrication System Features

IntegratedOilCooler

NoExternalOilPassagesinCrankcase

EasyAccessCartridgeStyleOilFilter

ExternalOilPressureRegulator

3

Lubrication SyStem

3

Lubrication System Features

The6.4LPowerStrokeDieselusesanoilcoolerthatismountedinthevalleyotheengineundertheoillter.

Theoillterisacartridgestyleltermountedonthetopotheengineoreaseoservice.Thissystemalsoincorporatesavalvethatdrainstheoiltothepanwhenthelterisremoved.

Thegerotoroilpumpandoilpressureregulatorarebothlocatedintherontotheenginebehindthevibrationdamperintheirownremoveablealuminumhousing.

8/3/2019 6.4L Lubrication System

2/7

22

Lubrication SyStem

35

Lubrication System Oil Flow

Oilisdrawnromtheoilpanthroughthepick-uptube.Theoilisthenroutedthroughapassagecastintotheupperoilpanbeorebeingroutedthroughapassageintheblock,apassageintherontcover,andnallytotheoilpumpinlet.

Theregulatorvalveutilizesaorce,providedviatheregulatorspring,toapplyapressureequalto65psi.Wheneveroilpressure

exceedsthisorce,theregulatorvalvewillmovedownwardandallowtheexcesspressuretobleedobackthroughapassagethatroutestheoilbacktotheinletsideothepump.

Fromtheoilpump,oilisdirectedtotheoilcoolerandthentotheoillter.

Fromtheoilltertheoilissuppliedtoachamberincorporatingve(5)passages.One(1)istotheturbochargersorlubrication.Two(2)aretotheEOTandEOPsensors.

Thetwo(2)otherpassagesaretothetappetoilsupplyontherightandletbanks.Thetappetgalleriesalsoprovideoiltothepistoncoolingjets.

Crossdrillingsootherightbanktappetgallerysupplyoiltothemainbearings.

Anothercrossdrillingverticallyupromeachmainbearingsuppliesoiltothecamshatbearings.

Note: This oil supply routing is dierent than the 6.0Land uses dierent bearings which are also placeddierently with respect to the oil holes.

8/3/2019 6.4L Lubrication System

3/7

23

3

Lubrication SyStem

3

3

Pick-up Tube / Oil Aeration

Thepick-uptubesuppliesoilromtheoilpantotheoilpump.

Thepick-uptubeissealedtotheupperoilpanutilizingano-ring.Itheo-ringisdamagedormissing,itcouldcauseoilaeration.

Oil Pressure Regulator

Theoilpressureregulatorislocatedinthegerotorhousingjusttotheright(whenlookingattheengineromtheront)othegerotoroilpump.

Theoilpressureregulatoriscalibratedtoopenatpressuresabove65psi.Itshouldbeclosedbelowthatpressure.

Theregulatorvalveutilizesaorce,providedviatheregulatorspring,toapplyapressureequalto65psi.Wheneveroilpressureexceedsthisorce,theregulatorvalvewillmovedownwardandallowtheexcesspressuretobleedobackthroughapassagethatroutestheoilbacktotheinletsideothepump.

Gerotor Oil Pump

Thegerotoroilpumpisdrivenoothefatsonthenoseothecrankshat.

Thegerotoroilpumpandregulatorvalveareheldintheirownremoveablehousing.

Alignment Dowels

Inner Gear Outer Gear

Dowel Locations

Upper Oil PanPick-up Tube

Oil Pump

Oil Pressure Regulator

Regulator

Housing

8/3/2019 6.4L Lubrication System

4/7

24

Lubrication SyStem

39

Oil Cooler Flow

Oil Filter Base

Oil Cooler Cover

Oil CoolerUncooled/Unfiltered Oil

Cooled/Unfiltered Oil

Cooled/Filtered Oil

Filter Drainback Oil

LubeSystemFlow:OilCooler

Uncooled/Unlteredoilisdirectedoutothecrankcaseattherontletcornerotheengineviaadrilledpassageromtheoilpump.

Uncooled/Unlteredoilisthendirectedacrosstheoilcoolercoverthendownintotheoilcooler.

Theoilisthencooledviatheoilcoolerasitpasses

throughthecoolertowardstherontotheengine. Thecooled/unlteredoilisroutedupthroughtheoilcoolercover

thenthroughtheoillterbasewhereitenterstheoillterhousing(thereisasmallinletvalveintheoillterbasethattheoilmustpassthroughtokeeptheoilromdrainingoutothelterhousingduringnon-operation).Atthispointtheoilfowsthroughthelter(romtheoutsideotheltertothecenter)whereitiscleaned.

Note: There is an oil lter bypass valve located at the top othe oil lter stand pipe (plastic tube the oil lter slides over)which will open and allow unltered oil to enter the systemwhenever a pressure dierential o 27 psi is reached.

Aterbeingcleanedviatheoillter,theoilisroutedthroughtheoillterbaseandintoacavitythathasportstodirecttheoiltotheollwingareas:letandrightoilgalleries,turbochargeroilsupply,andtheEOT&EOPsensors.

Note: There is a drain valve inside the oil lter base which is heldclosed by the oil lter whenever the oil lter cap is tight. Whenever

this cap is loosened, the valve is allowed to open and oil will thenescape through this valve, through the oil cooler cover, and thendown through a drilled passage in the crankcase to the oil pan.

Note: There is an oil cooler bypass valve inside the oilflter base which will open and let uncooled oil bypassthe oil cooler and enter the oil lter housing whenevera pressure dierential o 25 psi is reached.

Inlet/Anti-Drainback Valve

Oil Cooler Bypass Valve

Drain Valve

8/3/2019 6.4L Lubrication System

5/7

25

4

Lubrication SyStem

4

4

Front Cover

Oilfowsromthecrankcasetotheoilpumpviaapassagethroughtheupperoilpan,rontcover,andoilpumphousing.

Whentheoilpumpisturnedbythecrankshatitcreatesoifowandpushesoilthroughtwopassages.Onepassageistotheoilcoolerandtheotheristhroughtheoilpressureregulatorthentotheoilpumpinlet(thispassageisonly

usedwhenpressureexceeds65psi).Whentheoilreachesthenumerousrestrictionsthroughouttheengine,pressureisthencreated(pressureistheresistancetofow).

Allothepassagesromtherontcovertothecrankcasearesealedwitharubbercoatedmetal,onepiecegasket.

Oil Filter Base

Theoillterbasecontainsthemountingprovisionsortheoillterhousingandtheoillterstandpipe(whichcontainstheoillterbypassvalve).

Insidetheoillterhousing,therearetheollowingvalves:Inlet/Antidrainbackvalve,oilcoolerbypassvalve,andtheoillterdrainvalve.

TheoillterbasealsocontainstheportsortheEOT,EOP,andturbochargeroilsupply.Theseportsareallconnectedwiththecooled/lteredoilpassagedirectlybeneaththem.

Oil Cooler Cover

Theoilcoolercoverhaspassagesinittodirectthefowocoolantandoil.

Oilisroutedromtherontothecrankcasetotherearothehousingwhereitenterstheoilcooler.Theoilpassesromtherearotheoilcoolertotherontothecoolerandiscooledintheprocess.Theoilisthen

senttotheoillterthroughtheoillterbase.Filteredoilissenttotheoilpassagesinthecrankcase,theturbochargersupplyline,andtheEOT/EOPsensors.

Thecoolantisdirectedromtherontothecrankcasetotherontotheoilcooler.Itthenpassesthroughtheoilcoolerandcoolstheoil.Asthecoolantexitstherontothecooleritisdirecteddownintothecoolantstreamwhereitre-entersthecrankcasecoolingsystem.

Note: I the oil cooler is damaged it could causecontamination o the lubrication and cooling systems.

Coolant Into

Cooler

Coolant From WaterPump Right Oi l Supply Lef t Oil Supply

Coolant out

from Cooler

Coolant Back

to Block

Oil from

Cooler

Oil into

Cooler

Oil From

Pump

Oil Filter

Drain

EOP

EOT

Oil Cooler Bypass

Turbocharger

Oil Feed

Inlet/Anti Drain Back

Oil Filter Drain

Supply to Engine

(clean oil from

filter)

One Piece Gasket

Oil PumpOutlet/Oil CoolerSupply

Oil Pump Inlet

Diagnostic Port

8/3/2019 6.4L Lubrication System

6/7

26

Oil Filter Element

Lubrication SyStem

44

45

Oil Pump Flow (back side)

Theoilpumpisagerotorstylepumpdrivenoothefatsontherontotheenginescrankshat.

The6.4Loilpumpisheldinitsownremoveablealuminumhousingwhichalsocontainstheregulatorvalve.

Oilisdrawnintothepumpviathecombinationoatmosphericpressure(appliedtotheoilinthepan)andthelowpressureareathatiscreatedbetweenthegerotorgearsontheinletsideothepumpwhenever

thepumpisbeingdrivenbythecrankshat. Oncethishappens,theoilwillfowintothepumpand

thepumpwillcreateagenerousamountooilfow.

Whentheoilreachesvariousrestrictionthroughouttheengine,pressureiscreated.

Pressureislimitedviaapressureregulatorvalvelocatedinsidethepumphousing.Wheneverapressureo65psiisreached,theregulatorvalvewillopenandallowpressurizedoiltofowbackthroughareliepassagetotheinletsideothepump,thusregulatingsystempressure.

Oil Filter

The6.4LPowerStrokeDieselusesacartridgestyleoillter,locatedonthetopotheengine.

Whentheoillterisremoved,theoillterhousingdrainvalveisautomaticallyopenedtodrainmostotheoilromthehousing.

Theoillterelementsnapsintotheoillterlid.

Note: The oil lter lid should be removed beoredraining the oil rom the oil pan so that the oil candrain rom the lter housing into the oil pan.

Turbocharger Oil Supply

Oilissuppliedtotheturbochargersromtheoillterbaseviaasteeloilline,asteelTtting,andtwoseparatesteellinestoeachturbo(thehighpressureturbochargeroilsupplylinehasafexiblelinkinit).

Theoillinesareconnectedtoeachturbovia

banjottingsandwashergaskets.Note: The washer gaskets (which are used as a gasketmedium) must be replaced each time the banjo ttings areloosened.

43Inlet From Oil Pan

Back Side of Pump

Outlet to

Oil Cooler

Regulator

ValveRelief Passage

Low Pressure Turbocharger

Oil Supply

High Pressure Turbocharger

Oil Supply

Pump Rotation

8/3/2019 6.4L Lubrication System

7/7

27

4

Lubrication SyStem

4

Turbocharger Oil Drain Tubes

Oilissuppliedtotheturbochargerstolubricateandcoolthebearings.

Eachturbochargerhasitsowndrain.Thehighpressureturbochargerusesaremoveabletubewhereasthelowpressureturbochargerutilizesasmallextensiontubeooamachinedpassageintheturbochargerpedestal.

Thehighpressureturbochargerdraintubeissealedviatwo(2)O-rings,oneateachendothetube.

Thelowpressureturbochargerdrainextensiontubeissealedviaarubbercoatedmetaltube.

Oil Pan / Bed Plate

The6.4LPowerStrokeDieselusesatwopieceoilpan.Thelowerhaliswiderthanthebottomotheenginetoincreasetheoilcapacityothesystem.Duetothiswideroilpan,anupperoilpanisusedtoadaptthelowerpantothebedplate.Theupperpanalsoactsasanoilbafe.

Theupperpanisboltedtothebedplate.Thebedplatereplacestheindividualmainbearingcaps,resultinginamorerigidbearingretainingsystem.

Low Pressure Turbocharger

Oil Drain

High Pressure Turbocharger

Oil Drain

Lower Oil Pan

Upper Oil Pan

Bed Plate