TM 5-2330-361-14P HYSTER HP15T-MIL TRAILER

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TM 5-233 0-361-14& P

TECHNICAL MANUAL

OPERATOR,

DIRECT SUPPORT

ORGANIZATIONAL,

AND GENERAL SUPPORT

MAINTENANCE MANUAL

[Including Repair Parts Information and

Supplementa l Maintenance and Repair Parts Instructions)

TRAILER, FLATBED,

15 TON PAYLOAD

MULTI AXLE (CCE)

NSN 2330-01-060-8141

This copy is a reprint which includes current

pages from Changes 1 through 3.

HEADQUARTERS, DEPARTMENT OF THE ARMY

FEBRUARY 1980


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TM 5-2330-361-1

C 3

CHANGE HEADQUARTERSDEP ARTMENT OF THE ARM

NO. 3 WASHINGTON, DC, 23 August 19

OP ER ATOR, ORGANIZATIONAL, DIRE CT SUP P ORT

AND GE NER AL SUP P ORT MAINTENANCE MANUAL

(I n c lu d i n g R e p a i r P a r t s I n f o r m a t i o n a n d

S u p p l e m e n t a l Ma i n t e n a n c e a n d R e p a i r P a r t s I n s t r u c t i on s )

TR AILER , F LATBED , 15 TON P AYLOAD, MULTI-AXLE (CCE)

NSN 2330-01 -060-8141

TM 5-2330-361-14&P, 18 February 1980, is changed as follows:

1. Remove old pages and insert new pages as indicated. New or changed material is indicated by a vertical bar in th

margin of the page. Added or revised illustrations are indicated by a vertical bar adjacent to the illustration

ident if icat ion number.

Remove Pages Insert Pages Remove Pages Insert Pages

iii and 1-1 iii and 1-1 8-4 and 8-5 8-4 and 8-5

2-1 and 2-2 2-1 and 2-2 9-1 and 10-1 9-1 and 10-1

4-4 through 4-9 4-4 through 4-9 10-4 and 10-5 10-4 and 10-5

7-2 and 7-3 7-2 and 7-3 10-6 and 10-7 10-6 and 10-7

7-4 and 8-1 7-4 and 8-1

2 File this change sheet in front of publication for reference purposes.

By Order of the Secretary of the Army:

J OHN A. WICKHAM, JGeneral United States A

Chief of Staff

Official:

ROBERT M. JOYCE Major General Unites States ArmyThe Adjutant General

Distribution:

To be distr ibuted in accordan ce with DA Form 12-39, Technical Manual P art s List requirement s forTrailer, Flatbed, 15 Ton Payload, Multi Axle.


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TM 5-2330-361-14&P

C 2

HEADQUARTERSDEPARTMENT OF THE ARMY

WASHINGTON, DC, 15 June 1981

OPERATOR, ORGANIZATIONAL, DIRECT

SUPPORT AND GENERAL SUPPORT

MAINTENANCE MANUAL

(Including Repair Parts Information and

Supplemental Maintenance and Repair Parts Instructions)

TRAILER, FLATBED,

15 TON PAYLOAD,

MULTI-AXLE (CCE)

NSN 2330-01-060-8141

Current as of 1 November 1980

TM 5-2330-361-14&P, 18 February 1980, is changed as follows:

1. Remove old pages and insert new pages as indicated. New or changedmaterial will be indicated by a vertical bar in the margin of the page. When anentire appendix, section or paragraph is added or changed, the bar will beadjacent to the title only.

Remove Pages Insert Pagesi and ii i and ii

(volume 2) (Volume 2)i and ii i and ii1 through 97 1 through 55/(56 blank)

2. File this change sheet in front of the publication for reference purposes.

By Order of the Secretary of the Army:

Officia l:

J . C. PENNINGTON

Major General United States ArmyThe Adjutant General

Distribution:

E. C. M E Y E RGeneral United States Ar

Chief of Staff

To be distributed in accordance with DA Form 12-39, Technical Manual Parts List requirements

ha iler, Flat bed, 15 Ton P ayload, Multi Axle.


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This manual contains copyright material and is published with

permission of H yster Company.

TM 5-2330-361-14&

T E C H N I C A L M A N U A L H E A D Q U A R T E R S

D E P A R T M E N T O F T H E A R M Y

No. 5-2330-361-14&P WASHINGTON , DC, 18 February 1980

OPERATOR, ORGANIZATIONAL, DIRECT

SUPPORT AND GENERAL SUPPORT

(I N C L U D I N G R E P AI R P AR T S I N F O R M A TI O N A N D

S U P P L E M E N T A L M AI N T E N AN C E A N D R E P AI R P AR T S I N S T R U C T I O N S )

T R A I L E R , F L A T B E D ,

15 T O N PA Y L O A D

MULTI-AXLE (CCE)

NSN 2330-01-060-8141

V OLUME 1.

Section 1.2.3.4.6.6.7.8.9.

10 .11 .12 .13 .

VOLUME 2.Section I.

II .

III.IV.

Reporting Errors and Recommending Improvements. You can help improve

this manual. If you find any mistake or if you know of a way to improve the

procedures , p leas e l e t u s know. Mai l your l e t t e r , DA Form 2028 (Recom -

m ended Changes to Pub l ica t ions and B lank Form s ) , o r DA Form 2028-2

l o c a t e d i n t h e b a c k o f t h i s m a n u a l d i r e c t t o : C o m m a n d e r , U . S . A r m y

T a n k - A u t o m a t i v e M a t e r i e l R e a d i n e s s C o m m a n d , A T T N : D R S T A - M B A ,

Warren, Michigan 48090. A reply will be furnished to you.

OPERATOR, SERVICES AND PARTS MANUAL

In trod uct ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S p e c i f i c a t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O p e r a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M a i n t e n a n c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Troub leshoo t ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E l e c t r i c a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Air Sys tem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hydrau l ic Sys tems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Suspens ion and Axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Wheels and Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F r a m e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Parts Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SUPPLEMENTAL MAINTENANCE AND REPAIR PARTS INSTRUCTIONSGeneral . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair Parts Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Automatic Slack Adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pag

1-1

2-1

3-1

4-15-16-17-18-19-110111213

1

246

C h a n g e 2


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TM 5-2330-361-14&P

APPENDIX A .B.C.D.E .F .G.

H .I.J .K.L.

M.

References (Not Applicable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

War ra nt y Guide lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance Allocation Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Modificat ion Pr ocedur e . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Components of En d It em List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Expendable Supplies an d Mater ials List (ESML) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Prescribed Load List/Authorized Stockage List (PLL/ASL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sample Format-MILSTRIP Requisition for CCE (NSN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sample Format-MILSTRIP Requisition for CCE (Non-NSN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sam ple Forma t-MILSTRIP Requisition for CCE (Non-NSN) (Manua l) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sample Format-DA Form 2765 Part Number Request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preventive Maintena nce Checks an d Services

. . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deleted

This technical manual is an authentication of the manufacturers commercialliterature and does not conform with the format and content specified in AR310-3, Milita ry P ublicat ions. Th is t echn ical m an ua l does, however, cont ainavailable information that is essential to the operation and maintenance of the

equipment.

Page

15

17

19

27

29

33

35

3941

43

46

47

49

i i C h a n g e 2


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O PERA TO R,

SERVICE, and

P A R T S M A N U A L

H P 1 5 T - M I L .T r a i l e r , F l a t b e d ,

1 5 T o n P a y l o a d ,M u l t i - A x l e

M i l i t a r yC o n t r a c t D A A E 0 7 - 7 7 - C - 0 7 2 5N u m b e r

S e r i a lN u m b e r 2 1 2 4 1 t h r u 2 1 2 7R a n g e

P a r t N u m b e r 7 1 1 7 M

5 / 7


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WARNING


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TABLE OF CONTENT

P a g eSECTION 1. INTRODUCTION

GENERAL . . . . . . . . . . . . .UNIT NAMEP LATESE RIAL NU MBER DATA : : : : : : :SYSTEM SPE CIFICATIONS . . . l . .OPE RATING IN STRUCTIONS . . . . .HYSTER-CARE MAINTE NANCE . . . . .TROUBLESHOOTING . . . . . . . . .SYSTEM DESCRIPTIONS AND REP AIRS .

SECTION 2. SPECIFICATIONS

GENERAL . . . . . . . . . . . . .TRAILER CAPACITYFRAME PARTS SPECIFICATIONS: : :AIR SYSTEM SPECIFICATIONS . . . .UNDERCARRIAGE SPECIF ICATIONS . lAIR BRAKES SPECIFICATIONS . . . .TIRE SPECIFICATIONS . . . . . . .RIM AND WHEE L SPECIF ICATIONSHYDRAULIC SYSTEM SPECIFICATIONS :TORQUE SPECIFICATIONS FOR STANDARD HARDWARE

SECTION 3. OPERATION

GENERAL . . . . . . . . . . . . . . . . .

HOOK-UP PROCEDURE - UNITS WITH AIR BRAKESOPERATING PRECAUTIONS l . . . . .HP SERIES GENERAL INFORMATION . .OPERATING THE HP SERIES TILT . .

SECTION 4. MAINTENANCE

GENERAL . . . . . . . . . . . . .HYSTER-CARE MAINTENANCE SCHEDULEGENERAL . . . . . . . . . . . . .AIRLINE SYSTEM . . . . . . . . .

AIR BRAKESSLACK Adjust er. . . . . . . . . . . .TIRES . . . . . . . . . . . . . .ELECTRICALWHEEL BEARINGUNDERCARRIAGE AND WHEELS . . . .FRAME INSPECTION

HP SERIES TILTING PLATFORM-PINS

HP SERIES LUNETTE EYE . . . . . .CHECKING HP SERIES CYLINDER . . .MAINTENANCE ALLOCATION CHART. . .

SECTION 5. TROUBLESHOOTING

TROUBLE ANALYSIS FOR THE TRAILER LIGHTING SYSTEMTROUBLE ANALYSIS FOR TRAILER VIBRATION

1-1

1-1

1-1

1-1

1-1

1-1

1-1

1-1

2-1

2-1

2 -2

2 -2

2-3

2-3

2 -3

2 -4

2 -4

2 -5

3-1

3-1

3-1

3-1

3-1

4-1

4-1

4-1

4-1

4 - 4

4 - 4

4 - 5

4 - 7

4 - 7

4 - 8

4 - 8

4 - 8

4 - 94 - 94-10

5-1

5-1

i


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Page

SECTION 5. TROUBLESHOOTING CONT.

T R O U B L ETROUBLE

T R O U B L E

TROUBLETROUBLE

TROUBLE

ANALYSIS FOR HYDRAULIC SYSTEMS

ANALYSIS FOR SUSPENSION . . .

ANALYSIS FOR TIRES . . . . . .

ANALYSIS FOR DISC WHEELS . . .

ANALYSIS FOR HUBS . . . . . .

ANALYSIS FOR AIR BRAKES . . .

SECTION 6. ELECTRICAL

GENERAL

L I G H T I N G S Y S T E M

SECTION 7. AIR SYSTEM

GENERAL . . . . . . . .

BRAKE AIR SUPPLY SYSTEM-DESCRIPTION

RELAY EME RGEN CY VALVE RE-6 . . .

BRAKE CHAMBERS . . . . .

SECTION 8. BRAKES

GENERAL

CAMSHAFTRELINING BRAKES - AIR

SECTION 9. HYDRAULIC SYSTEM

GENERAL

H P S E R I E S T i L T C Y L I N D E R

SECTION 10. SUSPE NSION & AXLES

GENERAL

UNDERCARRIAGE ALIGNMENT

CORRECTING TIRE SCUFF AND UNEVEN WEAR

RUBBER BUSHINGS . . . . . .

REMOVING AXLES . . . . . . .

INSTALLING AXLES . . . . . .

SECTION 11. WHEELS & HUBS

G E N E R A LH U B R E M O V A L :

INSPECTION AND CLEANING . .

PREPARING BEARINGS (OIL LUBRICATION)

SECTION 12. FRAMES

5 -2

5 - 2

5 -3

5 -4

5 -4

5 -4

6-1

6-1

7-1

7-1

7-1

7 - 3

8 -1

8 -1

8 - 2

9-1

9-1

10-1

10-1

10-2

1 0 - 3

1 0 - 5

1 0 - 5

11-1

11-1

11-1

11-1

G E N E R A L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

WELD REPAIRS . . . . . . . . . . . . . . . . . . . . . . . 12-1

LASH RINGS . . . . . . . . . . . . . . . . . . . . . . 12-2

i i


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SECTION 13. PARTS MANUAL

INTRODUCTION . . . . . . . . . .

HOW TO USE THE ILLUSTRATED PARTS MANUAL

MISCELLANEOUS PARTS

E L E C T R I C A L S Y S T E M

CYLINDER ASSEMBLYB R A K E L I N E - 2 AX L E

T A N D E M A S S E M B L Y

AXLE ASSEMBLY

A I R B R AK E A S S E M B L Y

AIR BRAKE ACTUATING PARTS

HUB AND DRUM ASSEMBLY

SWING BACK LANDING GEAR

TM 5-2330-361-14&P

Page

13-113-213-313-4

13-513-613-713-813-913-1013-1113-12

i i i


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TM 5-2330-361-14&P

1- 1. GENERAL.

1.-2. This m a n u a l . c o n t a i n s ( o p e r a t i o n , be fore a t t e mpt i ng to operate the unit.m a i n t e n a n c e a n d s e r v i c e i n s t r u c t i o n s The driver should be responsible forfor HYSTER HP15T-MIL traiLers. (see maintaining the unit in good condi-

Figure l-l). The operating instruc- tion to ensure prolonged efficiency.

tions must be reviewed and understood

FIGURE 1-1 HP SERIES TRAILER.

1-3. UNIT NAMEPLATE (see figure 1-2).

1-4. The unit nameplate is located on

the left-hand tongue beam. The name-

plate must remain permanently affixed

to the unit.

1-5. SERIAL NUMBER DATA (see figure 1-2).

NOTE: The complete serial number must be ident-ified when ordering ports or communicating

service information to HYSTER COMPANY.

1-6. The unit serial number is stamped

onto the unit nameplate and into the

web

1-7.

1-8.

1-9.

1-10.

plate near the nameplate.

SYSTEM SPECIFICATIONS.

Unit specifications are listed in Section 2.

OPERATING INSTRUCTIONS.

Instructions necessary for safe and efficient

operation are given in Section 3.

1-11. HYSTER-CARE MAINTENANCE.

1-12 HYSTER-CARE MAINTENANCE procedures

such as servicing intervals are given in Section 4.

Always follow the maintenance schedule and rec-

ommended procedures to ensure prolonged efficiency

and service life.

1-1 Change 3

1-13. TROUBLESHOOTING.

114. Troubleshooting procedures

given in Section 5.

1-15. SYSTEM DESCRIPTIONS

and analysis are

AND REPAIRS.

116. Refer to the section which best fits the des-

cription of the system being serviced.

FIGURE 1-2 SERIAL NUMBER PLATE

MOUNTED ON HP SERIES TRAILER.


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TM 5-2330-361-1

2-1. GENERAL.

2-2. This sect ion contains specif icat ions which trailer operating systems. The following is a

will aid in the maintenance and service of your of tables included in this section.

TABLE

2 - 1 .

2 - 2 .

2 - 3 .

2 - 4 .

2 - 5 .

2 - 6 .

2 - 7 .

2 - 8 .

TABLE INDEX

2-5. TRAILER CAPACITY.

2-6. Units manufactured in the United States arerequired to list the Gross Vehicle Weight Rating

(GVWR) and Gross Axle Weight Rating (GAWR)

on the t ra i ler (see figure 2-1). This data wil l be

found on the uni t nameplate . The Gross Vehicle

Rating is the sum of the trailer weight and the trailer

capaci ty . This is the maximum s tructural capa-

bility of the trailer. The Gross Axle Weight Rating

is the maximum any axle can carry. The GVWR may

be attained under certain circumstances before the

GAWR or vice versa. Do not exceed either the GVWR

or GAWR. These weight limitations are independent

of road weight limitations imposed by law.

TITLE

Frame Parts Specifications

Air System Specifications

Undercarriage Specifications

Air Brakes Specifications

Tire Specifications

Wheel Specifications

Hydraulic System Specifications

Torque Specifications For Standard Hardware

FIGURE 2-1. WEIGHT LIMITATION

IDENTIFICATION PLATES

Cha nge 3


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TM 5-2330-361-14&P

TABLE 2-1 . FRAME P ARTS SP ECIF ICATIONS.

H I T C H - H P S E R I E S

T y p e

In side Diameter

Ring Section

Drawbar

DECKING

Pull

D i a m e t e r

(p in t l e coup le r ) R a t i n g

N o n s w i v e l , a d ju s t a b le h ei gh t lu n e t t e e ye

3 In. (76.2 mm)

1 5/8 In. (41.3 mm)

50,000 Lb. (22,690 kg) minimum

I2 in. (50.8 mm) thickness nominal

TABLE 22. AIR SYSTEM SPECIFICATIONS.

AIR LINES

S erv ice and Em ergency

R e l a y V a l ve t o R e s e r v oi r

R E S E R V O I R C A P A C I T Y

Tandem Axle

AIR CHAMBERS

1 3 / 3 2 i n . ( 1 0 . 3 m m ) i n s i d e d i a m e t e r

in. ( 12.7 mm) inside diameter

9 9 2 I n3( 1 6 2 5 6 c m

3)

Type 30)

2-2.


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TABLE 2-3. UNDERCARRIAGE SPECIFICATIONS.

T Y P E

AXLE SPACING

Tandem Axle

AXLES - TYP E

Adjus table , rubber bushed walking beam

48 1/4 ln. (1 225.6 mm)

Tubular cambered

TABLE 2-4. AIR BRAKES SPECIFICATIONS.

B R A K E S - T Y P E

LININGS

T y p e

Size with 15 wheels

drum diameter

width

t h i c k n e s s

C a m a c t u a t e d a i r b r a k e s

R i v e t - o n

12.25 In. (311.2 mm)

7.50 In e (190.5 mm)

.75 In. (19.1 mm)

TABLE 2-5 . TIRE SP ECIF ICATIONS.

T Y P E I Tube type, nylon cord

PLY RATING AND INFLATION

Size Ply Rating Cold Inflation

PSI kg /cm2

10.00 x 15 12 75 5.3

2-3.


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TABLE 2-8. TORQU E SP ECIF ICATIONS FOR S TANDARD HARDWARE (see f igu re 2-2) .

FIGURE 2-2 .

2 - 5 .


24/152

3-1 . GENE RAL.

3 - 2 . T h i s s e c t i o n c o n t a i n s g e n e r a l i n f o r m a t i o n

n e c e s s a r y f o r o p e r a t i o n o f H Y S T E R t r a i l e r s . R e -

v i e w t h e i n s t r u c t i o n s t h o r o u g h l y b e f o r e a t t e m p t i n g

to operate uni ts .

3 -3 . The d r ive r shou ld m a in ta in the t ra i l e r in good

m echan ica l cond i t ion to ensure a long s e rv ice l i fe .

Report faul ty operat ion and s tructural damage imme-

d ia te ly fo r cor rec t ion . Minor dam age can qu ick ly

resul t in a maior fa i lure i f not repaired.

3 - 5 . HOOK- UP PR OC EDUR E - U N I T S W I T HAIR BRAKES.

3 - 6 . T h e s e p r o c e d u r e s s h o u l d b e c o m e r o u t i n e b e -

fore pulling a unit with air brakes:

a . C o n n e c t p i n t l e c o u p l e r .

b. Connec t g ladhands and bu i ld up re se rvo i r

p r e s s u r e ,

c.

d.

e.

f.

Connect plug into electrical socket.

Connect emergency chains .

Check light sand reflectors (see Section 4).

R u n b r a k e a p p l i c a t i o n a n d r e l e a s e t e s t ( s e e

Section 4).

g. Run emergency

3-9. OPERATING

line test (see Section 4).

PRECAUTIONS.

a . T R A I N E D A N D A U T H O R I Z E D O P E R A T O R S

ONLY.

b . Check em ergency l ine func t ion each day be -

fore s tart ing out .

d . L o w e r l a n d i n g g e a r b e f o r e d i s c o n - -

n e c t i n g .

e, Load and unload on solid, level terrain.

f . Check p in t l e coup le r fc r p rope r engagem ent

before traveling.

g . Lash loads in accordance wi th s t anda rd p ro-

cedure .

3 - 1 .

i. Keep personnel away from frame and tongue

area when loading and unloading HP series t ra i lers .

l. U s e pr op er l y con s t r u ct e d ca g es , gu a r d s , or

baske t s when in f lo t ing t i re s . T IRES ARE TO BE

M O U N T E D B Y T R A I N E D S E R V I C E P E R S O N N E L

ONLY,

m. Check brakes and a ir l ine sys tem at frequent

intervals (see MAINTENANCE SECTION).

n . R e p o r t d a m a g e a n d f a u l t y o p e r a t i o n

i m m e d i a t e l y . D o n o t a t t e m p t t o o p e r a t e

t h e u n i t u n t i l r e p a i r e d .

3 - 3 0 . H P S E R I E S G E N E R A L I N F O R M A T I O N .

3-31. HP series provide a tilting incl ine

wi thou t d i s connec t ing f rom the t ruck . A cyl inder

con t rol s the ra te of t i l t . The lune t t e eye shou ld be

pos i t ioned to m a tch the t ruck coup le r . Torque bo l t s

and the lunet te eye should be welded to the tongue

before use .

3 - 3 2 . O P E R A T I N G T H E H P S E R I E S T I L T .

hARNING : HP Series trailers must be

c ou p l e d t o t h e p r i m e m o v e r

d u r i n g a l l l o a d i n g a n d u n -

l o a d i n g p r o c e d u r e s .

WARNING : D o N O T l o a d H P S e r i e s t r a i l e r s

3 - 3 3 .

a .

b.

f r o m a r a m p o r t i c k w i t h t h e

p l a t f o r m i n t h e h o r i z o n t a l

p o s i t i o n .

LOADING.

Release the platform lock.

S tand on t ra i ler rear channel unt i l the rear of

the pla tform touches the ground. The t ra i ler must

be connected to the truck.

c . Drive the load up the incl ine unt i l the t ra i ler

p l a t f o r m s t a r t s t o t i l t f o r w a r d . D O N O T P R O C E E D

F URTHER. The t ra i l e r bed wi l l con t inue to t i l t

without further progress up the incl ine .

d. Lock the platform.

e . P os i t ion the Ioadon the t ra i l e r p la t fo rm , The

maxim~m Ioadon the HP series Iunet te eye is 10,000

lb. (4 536 kg),

3 - 3 4 . U N L O A D I N G .

a . Re lease the p la t fo rm lock ,

b. Drive the Ioad back on the bed unt i l thepla t-

for m s t a r t s t i lt i n g b a ck . D O N O T P R O C E E D F U R -

THER unti l pla tform contacts the ground.


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FG

31SNNATEDWNC

3-2.


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4-1. GENERAL.

4 - 2 . T h i s s e c t i o n c o n t a i n s i n s t r u c t i o n s n e c e s s a r y

for p rope r HYS TER-CARE Main tenance o f HYS TER

t r a i l e r s . H Y S T E R - C A R E M a i n t e n a n c e i s d i v i d e d

i n t o t w o s u b s e c t i o n s : H Y S T E R - C A R E M a i n t e n -

a n c e S c h e d u l e a n d H Y S T E R - C A R E M a i n t e n a n c eP r oced ur es . T h e m a i n te n a n ce s ch e du l e l is t s t h e

recommended di s tance/ t ime intervals between main-

tenance checks . The p rocedure subsec t ion p rov ides

deta i led ins truct ions for performing the maintenance

c h e c k s . T h e i n s t r u c t i o n s l i s t e d i n t h e p r o c e d u r e s

s u b s e c t i o n a r e g i v e n b y s y s t e m s a n d a r e n o t n e c -

e s s a r i l y i n t h e o r d e r l i s t e d i n Tab le 4 -1 .

4-3 . HYSTER-CARE MAINTENANCE

S CHEDULE.

4-4. GENERAL.

4-5. HYSTER-CARE Maintenance is a planned

p r o g r a m t h a t i n c l u d e s p e r i o d i c i n s p e c t i o n a n d l u b -

r i ca t ion .

4-6. T a b l e 4 -1. I i s t s t h e r e c o m m e n d e d m a i n t e n -

a n c e c h e c k s . I t i s ou t l ined in two s chedu les : the

m i leage s chedu le and the pe r iod ic s chedu le . P e r -

f o r m m a i n t e n a n c e o n t h e b a s i s o f w h i c h e v e r o c c u r s

f i r s t .

4-7. The first c o l u m n o f t h e m a i n t e n a n c etab le 4 -1 s hou ld be used to loca te the app l icab le

maintenance procedure

shows the maintenance

a n d i ll u st r a t ion . F ig u r e 4 -1

points for the various series .

4-10. AIR LINE SYSTEM.

4-11. AIR SYSTEM TESTS.

4-12. A tes t series should be run every day before

operat ing t ra i ler .

FIGURE 4-1. HP SE RIES MAINTENANCE CHE CKPOINTS.

HYSTER COMP ANY 19784 - 1 .


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TABLE 4-1 . HYSTER-CARE MAINTENANCE SCH EDULE .

C - C h a n g e X - Check

4 - 2 .


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X-Check C-Change

TABLE 4-1. HYSTER-CARE MAINTENANCE SCHEDULE (CONT.).

4-3


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4 - 1 6 . Ai r h os es s h ou l d be ch e ck e d for c ha fi n g,

bends , andk ink ing eve ry m onth /2000 m i le s . Rep lace

fau l ty hoses .

4 - 1 7 . A I R B R A K E C H A M B E R S .

4 - 1 8 . T h e a i r s y s t e m t e s t s i n p a r a g r a p h 4 - 1 2 s h o u l d

d i s c lose any m a l func t ion ing b rake cham bers . Repa i r

or replace faul ty uni ts . Every 2,000 miles check the

c o n d e n s a t i o n h o l e s o n t h e u n d e r s i d e o f t h e b r a k e

c h a m b e r s t o m a k e s u r e t h e y a r e o p e n . T h e b r a k e

c h a m b e r s s h o u l d b e d i s a s s e m b l e d a n d c l e a n e d a t

5 0, 00 0 m i le s or y ea r l y. T h e d ia p h r a gm a n d a n y m a r -

g i n a l p a r t s s h o u l d b e r e p l a c e d . W h e n r e p l a c i n g t h e

diaphragm or spring, replace the corresponding ports

f o r t h e o t h e r c h a m b e r o n t h e s a m e a x l e ( t o a i d i n

e v e n b r a k e a p p l i c a t i o n a n d r e l e a s e ) . E x a m i n e y o k e

p i n f o r w e a r a n d r e p l a c e i f n e c e s s a r y .

4 - 1 9 . R E L A Y E M E R G E N C Y V A L V E .

4 - 2 0 . T h e a i r s y s t e m t e s t s i n p a r a g r a p h 4 - 1 2 m a y

disc lose a m a l func t ion o f the re loy em ergency va lve .

R e p a i r o r r e p l a c e fa u l t y u n i t s . T h e r e l a y V a l v e

s h o u l d b e d i s a s s e m b l e d a n d c l e a n e d e v e r y 5 0 , 0 0 0

m i le s o r yea r ly . R e p l a c e w o r n p a r t s . C o n t a c t a n

a u t h o r i z e d r e p r e s e n t a t i v e o f t h e o r i g i n a l e q u i p m e n t

manufacturer for re lay valve servic ing.

4 - 2 1 . A I R B R A K E S .

4 - 2 2 . G E N E R A L .

4 - 2 3 . H Y S T E R t r a i l e r s a r e e q u i p p e d w i t h c a m a c -

t u a t ed br a k es . B r a k i n g fo r ce i s s u p p li ed by a i r

p re s sure in the b rake cham ber , which pushes a push-

rod agains t the end of the s lack adjus ter . T h e s l a c k

adius ter rota tes the camshaft , which forces the brak

shoes aga ins t the b rake d rum .

424 . OP ERATING CHECKS .

4 - 2 5 . D u r i n g r o a d s t o p s , t a k e t i m e t o c h e c k t h

b r a k e d r u m s f o r a h e a t i n g c o n d i t i o n . P r o c e e d c a u

t i o u s l y s i n c e m a l f u n c t i o n i n g o r m i s a d j u s t e d b r a k e

c a n c a s e t h e d r u m t o b e c o m e e x t r e m e l y h o t . V a l v

s tem s m ay be burned by the ho t d rum . Do no t a t

tempt to operate the vehic le unt i l the problem caus

i n g t h e o v e r h e a t i n g i s c o r r e c t e d . A c o o l b r a k e d r u m

m a y i n d i c a t e a n i n o p e r a t i v e b r a k e . T e s t i s o u t l i n e

i n p a r a g r a p h 4 - 1 2 .

4 - 2 6 . B R A K E A S S E M B L Y .

4-27. T h e b r a k e a s s e m b l i e s s h o u l d b e

i n ~ s p e c t e d e v e r y 2 0 0 0 m i l e s o r m o n t h l y .

R e m o v e t h e d u s t s h i e l d s a n d e x a m i n e t h

b r a k e l i n i n g s v i s u a 1 l y t o l oc a t e t h e

l i n i n g s h o w i n g t h e g r e a t e s t a m o u n t o f

w e a r . T h e w h e e l a n d d r u m s h ou l d b e r e -

m o v e d a n d t h e l i n i n g r e p l a c e d i f t h e

t h i n n e s t p o r t i o n o f t h e l i n i n g i s 3 / 8

in. (9.5 mm) or less. Do not allow the

l i n i n g s t o w e a r t h i n e n o u g h s o t h e l i n

i n g r i v e t c o n t a c t s t h e d r u m ( s e e F i g u r

4 - 3 ) .

4 - 2 8 . G r e a s e t h e c a m s h a f t b r a c k e t b e a

i n g a n d t h e s p i d e r b u s h i n g a t 4 l o c a t i o

p e r a x l e e v e r y 2 5 , 0 0 0 m i l e s ( s e e F i g u r

4 - 4 ) . R e m o v e d u s t s h i e l d s t o g r e a s e ca

s h a f t s p i d e r b u s h i n g . D O N O T u s e a n e

c e s s i v e a m o u n t o f g r e a s e o n t h e a n c h o r

p i n s a n d s p i d e r b u s h i n g t o a v o i d g e t t i n

g r e a s e o n b r a k e l i n i n g s u r f a c e s .

4 - 2 9 . S L AC K A D J U S T E R .

4 - 3 0 . A u t o m a t i c s l a c k a d j u s t e r s c o m p e

s a t e f o r b r a k e l i n i n g w e a r . I n s p e c t a

g r e a s e s l a c k a d j u s t e r s e v e r y 2 5 , 0 0 0 m i

o r y e a r l y .

FIGURE 4-3. BRAKE BLOCK WEAR.F I G U R E 4 - 4 . G R E A S E Z E R K L O C A T I O N S

ON AXLE .C ha nge 3 4


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4-40. TIRES. sui t in weakening of the t i re cords , which can make

the t i re suscept ible to further dcmqe or fa i lure even

4 - 4 1 . I N F L A T I O N . w h e n u n d e r n o r m a l l o a d a n d i n f l a t i o n c o n d i t i o n s .

S ee f igure 4 -11 f o r m i l l u s t r a t i o n o f t h e r e s u l t s o f

4 - 4 2 . I m p r o p e r a n d p r o p e r i n f l a t i o n w i l l p r o d u c e t h e u n d e r i n f l a t i a n m d o v e r l o a d i n g .

t i re sect ion and ground cat tact character s t ies shown

i n f i g u r e 4 - 9 . T i r e i n f l a t i o n s h o u l d b e c h e c k e d4 - 4 8 - D U A L M A T C H I N G .

dai ly while cold. Do no t exceed the co ld in f l a t ion

p r e s - s u r e s s h o w n i n Tab le 2 -6 . T i re in f l a t ion shou ld

a l s o b e c h e c k e d d u r i n g r o a d s t o p s t o l o c a t e a i r

l o s s e s . A l s o , r e m o v e m y f o r e i g n o b i e c t s i a m m e d

b e t w e e n d u a l s . D o n o t a t t e m p t t o a ~ u s t t h e i n f l a -

t i o n p r e s s u r e w h i l e t h e t i r e s a r e w a r m . R E P A I R

A N Y L E A K S I M M E D I A T E L Y . A l l t i r e s s h o u l d b e

equipped with valve caps .

4 -49 . P rope r m a tch ing o f dua l s by s i ze wi l l re su l t

i n l o n g e r t i r e l i f e . I m p r o p e r m a t c h i n g w i l l c a u s e

t h e l a r g e r d i m n e t e r t i r e t o c a r r y a o v e r l o a d . T h i s

wi l l cause the typ ica l ove r loaded t i re d i f f i cu l t i e s .

T h e s m a l l e r d i a m e t e r t i r e w i l l a l s o w e a r m o r e r a p -

idly due to scuffing.

4 - 4 3 . E i t h e r o v e r i n f l a t i o n o r u n d e r i n f l a t i o n w i l l

c a u s e p r e m a t u r e t i r e f a i l u r e . O v e r i n f l a t i o n w e a k e n s

the cord body o f the t i re by reduc ing i t s ab i l i ty to

obsorb road shocks . O v e r i n f l a t i o n w i l l a l s o i n & c e

added s tresses on r ims and wheels , which can cause

fa i lu re due to fa t igue c racks ( s ee figure 4-10).

4 -44 .

a .

b.

p re s sure bu i ldup when t i re s a re warm .

OVER INFLATION.

Infla te to correct pressure when t i res are cool .

N e v e r b l e e d t i r e s t o r e l i e v e e x c e s s i v e

4-45 . Exces s ive bu i Idup o f a i r p re s sure can be due

to load , unde r in f la t ion , speed , o r a com bina t ion o f

the th ree .

4 - 4 6 . U N D E R I N F L A T I O N .

4 - 4 7 . U n d e r i n f l a t i a n c a u s e s r q t i d w e a r a n d p r e -

mature fa i lure . Underinfla t ian or overloading of t i res

a n m y v e h i c l e d r i v e n a t s u s t a i n e d s p e e d s w i l l r e -

FIGURE 4-10. RES ULT OF OVER INF LATED

TIRES.

4-5 C h a n g e 3FIGURE 4-9. PROPER TIRE INFlATION.


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TM 5-2330-361-14&P

4 - 5 0 . S I Z E M A T C H I N G .

a . T i r e s t h r o u g h 8 . 2 5 ( 8 - 2 2 . 5 t u b e l e s s ) . T i r e

differences of not more than !4 in. (6.35 mm) in di-

a m e t e r o r i n . ( 1 9 . 1 m m ) i n c i r c u m f e r e n c e a r e

a l l o w e d .

b . T i r e s i z e 9 . 0 0 ( 1 0 - 2 2 . 5 t u b e l e s s ) a n d l a r g e r .

Tire differences of not more than in. (12.7 mm) in

d i a m e t e r o r 1 i n . ( 3 8 . 1 m m ) i n c i r c u m f e r e n c e a r e

al lowed.

N O T E : T h e s m a l l e r o f t h e t w o t i r e s s h o u l d b e

mounted on the ins ide .

4 - 5 1 . T I R E M E A S U R E M E N T .

4 - 5 2 . M e a s u r e t h e c i r c u m f e r e n c e o f t h e t i r e w i t h

a n e n d l e s s t a p e a f t e r b e i n g p l a c e d o n t h e r i m a n d

i n f l a t e d , b u t n o t m o u n t e d o n t h e t r a i l e r ( s e e f igure4-12) . A s t r a i g h t e d g e , s q u a r e o r s t r i n g g a u g e c a n

b e u s e d t o c h e c k t h e t i r e s m o u n t e d o n t h e t r a i l e r

( s e e f i g u r e 4 - 1 3 ) . T h e d i m e n s i o n b e t w e e n t h e

s t r a i g h t e d g e a n d t h e t i r e s s h o u l d n o t e x c e e d o f

the a l lowable difference in diameter .

4-55. R EM OVI N G T IR E AN D DI SC WH E E L AS -

SEMBLIES.

4-56. W i t h t h e t r a i l e r s u p p o r t e d b y

j a d e s a n d b l o c k e d , l o o s e n a n d r e m o v e

o u t e r c a p n u t s ( s e e F i g u r e 4 -1 5 ) . R e m o v e

t i r e a n d d i s c w h e e l . L o os e n a n d r e m o v e

FIGURE 4-11. RESULT OF UNDE R

INFL AT E D T IRE S.

t h e i n n e r c a p s c r e w s i f t h e i n s i d e a s -

s e m b l y n e e d s c h a n g i n g .

4 - 5 7 . M O U N T I N G A N D R E M O U N T I N G T I R E S O N

DISC WHEELS.

F I G U R E 4 -1 2 . M E A S U R I N G T I R E W I T H

E N D L E S S T AP E .

F I G U R E 4 -1 3. U S E O F T I R E S T R A I G H TE D G E .

Cha nge 3 4-


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4 - 5 8 . R e a d t h e f o l l o w i n g l i s t o f p o i n t s t o w a t c h

when repair ing t i re and disc wheels .

CAUTION : DO NOT ATTEMPT TO) REPAIR

D I S C W E E L S . SCRAP DAMAGED

PARTS .c . M a t c h d u a l s ( s e e p a r a g r a p h s 4 - 4 8 t h r o u g h

4 - 5 2 ) .

f . U s e p r o p e r v a l v e s t e m s a n d e x t e n s i o n s . I f

v a l v e s p a c e r s a r e u s e d , b e s u r e t h e y a r e i n p l a c e

on the hub and s ta r t the inne r cap nu t s . T igh ten the

inner cap nuts to the torque and sequence shown for

y o u r a r r a n g e m e n t ( s e e f i g u q e 4 - 1 7 ) . T igh ten in

several stages to avoid di stortion of the disc. Place

the outs ide t i re and disc wheel assembly on the hub

a n d s t a r t t h e o u t e r c a p n u t s . Va lve s t em s fo r the

two whee l s shou ld be m ounted in d i f fe ren t c i rcum -

f e r e n t i a l p o s i t i o n s f o r e a s y i n f l o t i o n . T i g h t e n t h e

o u t e r n u t s i n t h e s a m e s e q u e n c e a n d t o r q u e .

be fore reas sem bl ing .4-63. CHECKING TIGHTNESS ON MOUNTED DUAL

C AUTI ON: DISC WHEELS.

h. Do not

DO NOT STAND IN FRONT OF A

TIRE WHEN INFLATING.

4 - 6 4 . C h e c k t h e i n n e r a n d o u t e r c a p n u t t o r q u e

ove r in f la te ( s ee Table 2-6). a f t e r the f i r s t t r ip fo l lowing m ount ing .A n o c c a -

i . W h e n t i r e s a r e w o r n , t h e t u b e w i l l a l s o b e

w or n . R e pl a ce it . U s e t h e r i gh t t u b e s i ze .

i. Rep lace cha fed , p inched , s t re tched , o r c reas -

e d t u b e s .

k. Replace twi steal, creased, or folded flaps.

4-61. MOUNTING TIRE AND DISC WHEEL ASSEM-

BLIES .

4 - 6 2 . B e f o r e m o u n t i n g t h e d i s c w h e e l , c l e a n t h e

m ount ing face o f d i r t and exces s pa in t . Mounting

faces which have been damaged must be repaired or

r e p l a c e d . R i g h t - h a n d t h r e a d s a r e o n t h e r i g h t s i d e

of the vehic le , and left -hand threads are on the left

s ide . P lace the ins ide t i re ond d i s c whee l a s sem bly

s i on a l c h e ck , t h e r e a f t e r , i s a l s o r e co m m e n d e d .

Loosen the outer cap nut before t ightening the inner

cap nut.

4 - 6 5 . E L E C T R I C A L .

4-66. C h e c k l i g h t s , l e n s e s , a n d r e -

f l e c t o r s e v e r y d a y b e f o r e u s i n g t h e

t r a i l e r . T h i s i n s p e c t i o n s h o u l d a l s o

i n c l u d e o p e r a t i o n o f t h e t u r n s i g n a l s

a n d b r a k e l i g h t s .

4 - 7 2 . W H E E L B E A R I N G S .

4 - 7 3 . O I L L U B R I C A T I O N .

4 - 7 4 . O i l l e v e l s h o u l d b e m a i n t a i n e d b e t w e e n t h e

add and fu l l l ines on the hub cap window (s ee

f i g u r e 4 - 1 8 ) . C h e c k l e v e l d a i l y . A l s o c h e c k f o r

c r a c k e d w i n d o w s and for oi l

l e a k s a r o u n d t h e h u b c a p . T h e h u b c a n b e f i l l e d

F I G U R E 4 -1 5. R E M O V AL O F T I R E S A N D D I S C WH E E L S .

4-7.


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through t h e f i l l e r p l u g . O i l

shou ld be changed a t 50 , 0~ m i le s o r wi th b rake re -

l inings .

4 - 7 7 . U N D E R C A R R I AG E A N D W H E E L S .

4 - 7 8 . T h e u n d e r c a r r i a g e s h o u l d b e v i s u a l l y e x a m -

i n e d f o r b r o k e n a n d m i s s i n g p a r t s . C h e c k b r a c k e t s ,

a d i u s t i n g s c r e w s , a n d w a l k i n g b e a m e n d s . R e p l a c e

f a u l t y p a r t s .

C h e c k d i s c w h e e l m o u n t i n g f o r t i g h t n e s s

d a i l y . S e e f i g u r e 4 - 1 7 f o r t o r q u e

s p e c i f i c a t i o n s a n d t i q h t e n i n q s e q u e n c e .

F I G U R E 4 -1 7. T I G H T E N I N G S E Q U E N C E

O F D I S C W H E E L S .

4 - 7 9 . T h e u n d e r c a r r i a g e r u b b e r b u s h i n g s s h o u l d b e

exam ined eve ry 2 , 000 m i le s fo r b reak ing and s igns

of wea r . D i s c w h e e l s ; a n d b r o k e

drums should be careful ly examined for cracks every

2,000 miles. D o n o t a l l o w t h e s e a r e a s t o b e c o m e

e x c e s s i v e l y w o r n o r e x p e n s i v e r e p a i r s w i l l b e r e -

qu i red .

4 - 8 0 . F R A M E I N S P E C T I O N .

4-81 . The f ram e shou ld be checked da i ly fo r c rack-

e d w e l d s , f a i l i n g s t e e l m e m b e r s , c r a c k e d d e c k i n g .

4 -82 . S t ruc tu ra l c racks wi l l usua l ly show bes t when

t h e t r a i l e r i s l o a d e d . S t r u c t u r a l r e p a i r s s h o u l d o n l y

be a t tempted by persons experienced in this f ie ld.

4 :8 3 . F a i l u r e t o m a i n t a i n d e c k i n g i n g o o d s h a p e

may cause damage to crossmembers .

4 - 8 7 . H P S E R I E S T I L T I N G P L A T F O R M P I N S .

F I G U R E 4 - 1 8 . S T E M C O H U B C A P .

Chan ge 3 4-8


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MAINT E NANCE AL LOCAT ION CH ART

(MD SOP 700-5)

SECTION II- ASSIGNMENT OF MAINTENANCE F UNCTIONS

4-10.


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SECTION II-ASSIGNMENT OF MAINTENANCE FUNCTIONS

(MD SOP 700-5)MAINTENANCE ALLOCATIN CHART

4 - 1 1 .


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MAINTENANCE AL LOCAT10i4 CHART

(MD SOP 700-5)

SECTION II - ASSIGNMENT OF MAINTENANCE FUNCTIONS

4- 12 .


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TABLES 5-1. TROUB LE ANALYSIS FO R TH E TR AILER LIGH TING SYSTEM.

TROUBLE PROBABLE CAUSE CORRECTIVE ACTION

No light s Im proper connect ion a t plug and Tighten connection.

socket.

Broken or corroded wires. Replace.

Ground wire loose. Tighten connection.

Wires shorted. Locate and insulate or replace.

All lights flickering Wires shorted. Locate and insulate or replace.

Ground wire loose. Tighten connection.

Corrosion. Replace corroded parts.

TABLE 5-2. TRO UBLE ANALYSIS F OR TR AILER VIBR ATION.

TROUBLE PROBABLE CAUSE CORRECTIVE ACTION

Trailer vibration or tramp Tire inflation incorrect. Inflate to cold starting.

p res sure .

Tir es , or wh eels i ncor r ect ly See Sect ion 4 for cor rect

mounted. disc wheel mounting.

Loose pa rt s in u nder ca rr ia ge. Tigh ten or r epla ce.

Brakes dragging. Locate cause (see Trouble

Analysis for Brakes)

Cupped tires, flat spots on Ba lance t i re s , and d i s c whee l s .

tires (imbalance).

5 - 1 .


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TABLES-4. TROUBLE ANALYSIS F OR HYDRAULIC SYSTEMS

TROUBLE PROBABLE CAUSE

HP series t i l t Failure to load correctly.

mechanism operates too fast

or erratically.

Defective cylinder packing.

Low fluid.

Crackedor sp l i t p i s t on .

CORRECTIVE ACTION

Follow correct operating

procedure (see Section 3).

Rep l ace pack i ng .

Check for leaking head packing.

Rep l ace defec t i ve par t s .

Rep l ace defec t i ve par t s .

TABLE 5-6. TROUBLE ANALYSIS F OR SU SP ENSION.

TROUBLE

Tires hitting frame.

t rai ler s teers or d o g s t o

one side.

PROBABLE CAUSE

Undercarr iage rubber bushings

worn or broken.

Rubber bushings loose.

Undercarr iage out of al ignment .

Broken or bent walking beams or

equal i zer s .

Incorrect t ires or wheels.

Undercarr iage out of al ignment .

Broken or bent walking beams or

equal i zer s .

CORRECTIVE ACTION

Rep l ace bush i ngs .

T i g h t e n r e t a i n i n g n u t s

u n t i l b u s h i n g r e t a i n e r

p l a t e s a r e s h o u l d e r e d .

Realign. Refer to Section 10.

Replace defective parts.

Use only original equipm ent

type tires, and disc wheels.

Realign. See Service Manual

Section 10.

Replace defective parts.

5-2.


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TABLE 5-7 . TROUBLE ANALYSIS FOR TIRES.

5-3.


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TABLE 5-8 TROUBLE ANALYSIS FOR DISC W HEELS.

TABLE 5-10 . TROUBLE ANALYSIS FOR AIR BRAKES.

TABLE 5-9 . TROU BLE ANALYSIS F OR H UBS.

5-4.


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TABLE 5-10. TROUBLE ANALYSIS FOR AIR BRAKES (CONT.) .

5-5.


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TABLE 5-10. TROUBLE ANALYSIS FOR AIR BRAKES (CONT.).

5 -6 .


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TABLE 5-10. TROUBLE ANALYSIS F OR AIR B RAKES (CONT .).

5-7.


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l ie s o n t h e t r a c t o r e l e c t r i c a l s ys t e m f o r6-1. GENERAL. i t s o u t p u t .

6 - 2 . T h e t r a i le r e l ec t r i c a l s y st e m c o n - 6-3. LIGHTING SYSTEMs i s t s o n l y o f a l i g h t i n g s y s t e m w h i c h r e - 12 VOLT - 24 VOLT (See Figure 6 -1) .

FIGUR E 6-1. ELEC TR IC AL SCHE MATIC - 12 an d 24 VOLT.6 - 1 .


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FIGURE 7-2. RE-6 RELAY EMERGENCY VALVE

TM 5-2330-361-14&P

C ha nge 3 7 -2


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TM 5-2330-361-14&P

f . W i t h t h e e n g i n e s t o p p e d a n d t h e p r e s s u r e a t

90-100 PSl (6.33-7.03 kg/cm2) make and hold a full

s e r v i c e b r a k e a p p l i c a t i o n . A t w o m i n u t e c h e c k

should show a pressure drop of no more than 8 PSI

( . 5 6 k g / c m2) f o r t h e c o m b i n a t i o n v e h i c l e s y s t e m .

g . I f f i n d i c a t e s p o s s i b l e l e a k a g e , a p p l y s o a p

s u d s on t h e R E -6 cov er a n d e xh a u s t p or t . A on e

inch (25.4 mm) bubble in not less than three seconds

i s pe rm is s ib le .

h . P lace the t rac to r p ro tec t ion con t ro l va lve in

e m e r g e n c y p o s i t i o n o r s h u t o f f c u t - o u t c o c k o n

t h e e m e r g e n c y l i n e a n d d i s c o n n e c t t h e e m e r g e n c y

line coupling. T r a i l e r b r a k e s m u s t a p p l y p r o m p t l y .

C h e c k f o r l e a k a g e a t t h e e m e r g e n c y c o u p l i n g . A

leak ind ica te s a l eak ing check va lve o r o - r ings in

the RE-6 va lve . Also check fo r l eakage on the s e r -

v i ce l i n e . A l ea k h e r e i n di ca t e s le a k y o- r in g s on

t h e r e l a y v a l v e . R e c h a r q e t h e s v s t e m . B r a k e s

shou ld re lease a t 65 P S I (4 . 57 kg /cm2) e m e r g e n c y

line pressure .

i. S h u t o f f t h e e n g i n e w i t h t h e s y s t e m f u l l y

cha rged . Make a s e r i e s o f foo t va lve app l ica t ions

to reduce the p re s sure to 30 P S I (2 . 11 kg /cm2) The

t r a i l e r b r a k e s s h o u l d a p p l y a u t o m a t i c a l l y a t t h i s

p r e s s u r e o r a t t h e e m e r g e n c y s e t t i n g o f t h e t r a c t o r

protect ion equipment .

7-8. If the valve does not function properly or leak-

a g e i s e x c e s s i v e , i t shou ld be rep laced .

7 9 . B R A K E C H A M B E R S ( s e e f i g u r e 7 - 4 ) .

7-10. Air pressure on the pressure pla te s ide of the

b r a k e c h a m b e r d i a p h r a g m p u s h e s t h e d i a p h r a g m a -

gains t the push rod assembly. This extens ion of the

p u s h r o d p u s h e s a g a i n s t t h e s l a c k a d j u s t e r , w h i c h

ac tua te s the b rakes .

7-11. BRAKE CHAMBER SERVICING.

7-12 . I f l eakage i s de tec ted a round the c lam p r ing ,

i t m a y b e t i g h t e n e d e n o u g h t o s t o p t h e l e a k a g e .

Overt ightening may cause permanent dis tort ion of the

c lam p r ing . T h e c l a m p r i n g b o l t s ( 2 ) o n B e n d i x

W e s t i n g h o u s e a i r c h a m b e r s c a n b e t i g h t e n e d t o 1 2 0 -

130 inch- lbs . (1 . 38-1 . 50 kg-m )

7-13. BRAKE CHAMBER REMOVAL.

7 - 3 .

7 - 1 4 . D i s c o n n e c t a i r l i n e a n d p u s h r o d y o k e . R e -

move nuts on mounting studs and remove air chamber.

7-15. BRAKE CHAMBER DISASSEMBLY:

a. Clean the exterior of the brake chamber.

b. Mark the parts so they can be reassembled the

same way.

c . Pul l out push rod and c lamp i t in this pos i t ion

w i t h a v i s e o r w i t h v i s e g r i p p l i e r s . T h e g r i p s

should be taped to prevent damage to the push rod.

d. Remove the bol ts on the c lamp ring.

e . Spread the c lamp ring s l ight ly to permit i t to

be removed. Be careful not to bend i t out of shape.

f . Remove the pressure pla te and diaphragm,

g. Remove the locknut and yoke from the push rod.

h. Release the grip on the push rod.

i . Remove the push rod and spring.

7 - 1 6 . C L E A N I N G A N D I N S P E C T I O N O F P A R T S .

7 - 1 7 . C l e a n a l l m e t a l p a r t s i n a s u i t a b l e s o l v e n t .

Inspect parts for damage, wear, or deteriora t ion and

rep lace i f neces sa ry .

7 - 1 8 .

a .

b.

c .

rod.

d.

BRAKE CHAMBER ASSEMBLY:

Stand the push rod assembly on a f la t surface .

Put the return spring in position.

P l a c e t h e n o n - p r e s s u r e p l a t e o v e r t h e p u s h

Push the non-pressure pla te down agains t the

flat surface and clamp in place with vise grip pliers

with taped grips .

e . P l a c e t h e c l a m p r i n g o v e r t h e n o n - p r e s s u r e

p la te c lam ping sur face .

f . P o s i t i o n t h e d i a p h r a g m i n t h e p r e s s u r e p l a t e

a n d a s s e m b l e w i t h t h e n o n - p r e s s u r e p l a t e b y w o r k -

ing the c lamp ring over the pressure pla te . Align a l l

marks made during disassembly.


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TM 5-2330-361-14&P

g. D r a w t h e c l a m p l u g s t o g e t h e r a n d s t a r t t h epos i t ioned down. Ins ta l l yoke and locknut on push

clamp bol ts and nuts . T igh ten these even ly to 120- rod. Install yoke pin ons l a c k a d j u s t e r a n d a d j u s t

1 3 0 i n c h l b s . ( 1 . 3 8 - 1 . 5 0 k g - m ) ( B e n d i x . W e s t i n g - b r a k e s .Check the ang le fo rm ed by the s l ack ad-

house). j u s t e r a n d p u s h r o d w i t h t h e b r a k e s a p p l i e d . T h i s

angle should not be less than 9 00. Turn the yoke to

7 - 1 9 . I N S T A L L A T I O N . o b t a i n t h e d e s i r e d a n g l e . T h e a n g l e s h o u l d b e t h e

7 - 2 0 . P l a c e b r a k e c h a m b e r i n m o u n t i n g b r a c k e t a n d s a m e f o r a l l s l a c k a d j u s t e r s w h e n t h e b r a k e s a r e

t i g h t e n n u t s o n s t u d s . The d ra in ho le shou ld be a d j u s t e d .

FIGURE 7-4. BRAKE CHAMBER.

Chan ge 3 7-4


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TM 5-2330-361-14&P

8-1. GENE RAL.

8 - 2 . S e c t i o n 4 i n c l u d e s a b r i e f d e s c r i p t i o n o f t h e

opera t i on o f t he a i r b rakes . Th i s sec t i on cover s t he

servicing of the air brake assembly.

F I G U R E 8 - 1 . F O U N D A T I O N B R A K E .

8 - 7 . C A M S H A F T .

8 - 8 . C AM S H A F T R E M O V A L .

8 - 9 . B e f o r e r e m o v a l , s u p p o r t t h e t r a i l e r o n b l o c k s

and remove the hub and drum (see Section 11). With

this s tep complete, proceed as fo l lows:

a. Remove brake shoe retainer spr ings and gent ly

lower shoes to prevent damage.

b. Remove the yoke pin from the slack adjuster.

c . Remove t he snap r i ngs a t t he s l ack ad j us t e r

and brake spider .

d . Remove t he s l ack ad j us t e r .

e . P u l l c a m s h a f t o u t . The cam retainer washer

and cam spacer washer wi l l a l so come o f f wi t h t hecamshaf t .

f . Remove t he g rease sea l s and t he sp i der bush -

ing from the spider.

8 -10 . CLEANING AND INSPECTION.

8 - 1 1 . C l e a n m e t a l p a r t s i n s o l v e n t . C h e c k c o n d i -

t i on o f t he b rake d rum, l i n i ngs , cam ro l l e r s , cam

8-1 Change 3


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bracket bush i ng , sp i der bush i ng , r e t a i ner sp r i ngs ,

yoke, yoke pin , cam spacer washer , and cam retainer

w a s h e r . R e p l a c e d e f e c t i v e p a r t s . I f b r a k e s n e e d

re l i n i ng , see re l i n i ng b rakes . " Al ways r ep l ace t he

sp i der bush i ng g rease sea l s when t he camshaf t i s

removed.

8-12. CAMSHAFT INSTALLATION.

a . P ress i n sp i der bush i ng . L i ne up t he g reaseh o l e i n t h e b u s h i n g w i t h t h e g r e a s e h o l e i n t h e

sp i der .

b . P ress new sea l s i n

sp i der bush i ng . The l i p s

b u s h i n g .

c . C o a t t h e s p i d e r

place on both sides of the

of the seals must face the

bush i ng and t he camshaf t

b racket bush i ng wi t h mul t i -pu rpose g rease .

d. Put a very l ight coating of grease on the cam

spacer washer and place i t under the camshaf t head.

e . S t a r t a s s e m b l i n g t h e c a m s h a f t t h r o u g h t h e

spider while being careful not to damage the bushing

and sea l s .

f . P l a c e t h e c a m r e t a i n e r w a s h e r a n d o n e s n a p

r ing over the cam spl ine and then push the camshaf t

through the camshaf t bracket .

g . Put the s lack adjuster in posi t ion on the cam-

shaf t sp l i nes .

h . Inser t the snap r ings in grooves.

i. Oil t h e ca m rolle r. (U se a n ew r olle r a n d

shaf t i f t he camshaf t i s r ep l aced . )

j . Hook up shoe retainer springs.

k . T u r n t h e s l a c k a d j u s t e r m a n u a l

a d j u s t i n g s c r e w t o g e t t h e s l a c k a d -

j u s t e r i n p o s i t i o n t o i n s e r t t h e y o k e

p i n .

l.

m.

8 - 1 3 .

8 - 1 4 .

Instal l the hub and drum (see Sect ion 11) .

Adjust the brakes (see Section 4).

R E L I N I N G B R A K E S - A I R .

See Section 4 for inspection of brake l inings

for wear. The procedure for rel ining follows:

8-15. DISASSEMBLY (see f igure 8-2) .

a. Back off the slack adjuster.

b . Remove the cast wheel or hub and drum (see

Sect i on l l ) .

c . Remove the brake shoe retainer spr ings.

d . R e m o v e t h e a n c h o r p i n l oc k w a s h -

e r f r o m a n c h o r p i n .

h. Remove the shoe and l ining assembly.

j . Remove t he snap r i ng r e t a i n i ng t he cam

rolIer shaft,

k . Remove the cam rol ler and shaf t .

l . R e m o v e t h e l i n i n g r i v e t s .

8-16. CHECKING BRAKE DRUMS.

a . S c o r e d o r b a r r e l - s h a p e d d r u m - D r u m w i l l

need turning down if a .010 in. ( .254 mm) wire will

pass between the drum and a s t raightedge placed on

t h e b r a k e d r u m s u r f a c e ( s e e f igure 8-3) .

b . B e l l m o u t h i n g - Drums can be checked fo r

i n s i d e d i a m e t e r s a t b o t h e d g e s o f l i n i n g c o n t a c t

points, Differences in diameter of more than .010 in.

(.254 mm) should be turned out (see figure 8-4).

c . Recond i t i on ou t -o f - round b rake d rums . Check wi t h i n s i de mi cromet er o r d i a l i nd i ca t o r ( see f igure

8 - 5 ) . A l l o u t - o f - r o u n d c o n d i t i o n s h o u l d b e c o r -

r ec t ed .

8 - 2 .


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FIGURE 8-2. FOUNDATION BRAKE COMPONENTS.

d. R e p l a c e c r a c k e d , b a d l y s c o r e d , o r s e v e r l y

hea t checked b rake d rum s .

8 -17 . REF INIS HING DRUMS .

a. Do not exceed maximum ins ide drum diameter

specif icat ion cas t into brake drum.

b . R e f i n i s h b o t h d r u m s o n a n a x l e a t t h e s a m e

time.

c . Use a f inish of 180

8 - 1 8 . C H E C K I N G B R A K E

m icro- inches roughnes s .

P A R T S .

a . Check b rake shoe aga ins t anew shoe ( i f pos -

s ib le ) fo r d i s to r t ion . D o n o t u s e d i s t o r t e d s h o e s .

b. Check re tract spring for e longat ion.

8 - 3 .

F I G U R E 8 - 3 . C H E C K I N G F O R S C O R E D D R U M .

c . U s e n e w a n c h o r p i n b u s h i n g s ,

c a m r o l l e r s , r o l l e r s h a f t s a n d l i n -

i n g r i v e t s

d . E x a m i n e t h e c a m f a c e , c a m w a s h e r s , a n c h o r

p i n s , c l i p s a n d s n a p r i n g s f o r w e a r , b r e a k a g e , a n d

dis tort ion.


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TM 5-2330-361-14&P

FIGURE 8-4. CHECKING FOR BELLMOUTHING.

e . Check fo r g rease l eakage under cam head . I f

e x c e s s i v e , p u l l c a m s h a f t a n d r e p l a c e s e a l s .

f. C h e c k f o r s i d e m o v e m e n t o f c a m i n s p i d e r

bush i ng . I f de t ec t ab l e , r ep l ace bush i ng and sea l s .

g. See t he p rocedure on camshaf t r emoval andr e a s s e m b l y i f c a m s h a f t b u s h i n g s a r e w o r n , o r i f

seals are leaking.

8-19. REASSEMBLING BRAKES.

a. Clean al l metal par t s in solvent and dry thor

oughly .

b . P r e s s n e w a n c h o r p i n b u s h i n g s

i n t o b r a k e s p i d e r .

c . A s s e m b l e n e w b r a k e l i n i n g s o n t o

b r a k e s h o e s . U s e p r o p e r o v e r s i z e l i n -

i n g s i f b r a k e d r u m s h a v e b e e n t u r n e d

down .

d . O i l new ro l l e r and shaf t and r eassembl e i n t o

shoe.

N O T E : D o n o t a l l o w o i l o r g r e a s e t o c o n t a c t

brake l ining.

e . A s s e m b l e s h o e s i n t o s p i d e r s

w i t h w a s h e r s a n d s n a p r i n g s

FIGURE 8-5 . CHECKING FOR OUT-OF-ROUNDNESS.

Ch an ge 3 8-4


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TM 5-2330-361-14&P

9. Circle grind linings to drum diometer.

NOTE : W h e n u s i n g a n e w b r a k e d r u m w i t h

r e p l a c e m e n t l i n i n g s , t h e l i n i n g s

m u s t b e b u f f e d .

h . R e a s s e m b l e hub and drums (seeSec t ion 11) .

i . R e a s s e m b l e s l a c k a d j u s t o r t o c a m s h a f t ( s e e

c a m sh a f t r e a sse m b ly ) . R e p l a c e t h e s l a c k a d j u s t e r

i f ho les a re .

worn .

j . Ad ju s t b ra k e s ( se e Se c t i o n 4 ) .

k . C h e c k b r a k s a d j u s t m e n t f r e q u e n t l y d u r i n g t h e

first 500 miles after relining.

8 - 5 .


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TM 5-2330-361-14&P

9 - 1 . G E N E R A L .

9 - 3 6 . H P S E R I E S T I L T C Y L I N D E R .

9 - 3 7 . F I L L I N G .

9 - 3 8 . F i l l t h e t i l t c y l i n d e r w i t h t h e r o d f u l l y r e

t r a c t e d . A ve r y sm a l l ai r s p a ce n e ed s t o b e le ft i n

the cylinder for proper operation. Filling the cyclin

de r a s fu l l a s pos s ib le when in the ang le shown in

f igure 912 wi l l l eave abou t the r igh t s i ze a i r gap .

9 - 3 9 . T E S T I N G ,

9 - 4 0 . A t e s t o f

t e rm ine tha t the

Tes t as fol lows:

t h e p la t for m f r e e f a l l w i ll d e -

c o r r e c t a m o u n t o f a i r i s p r e s e n t .

a . Ti l t the pla tform to the ground.

b. Measure the vert ical dis tance from the tongue

to the top front edge of the frame.

c . U s i n g a n a s s i s t a n t t o t a k e t h e m e a s u r e m e n t ,

s tart walking towards the front of the pla tform (see

figure 9-13).

d . T h e p l a t f o r m s h o u l d d r o p s u d d e n l y a s m a l l

amount when you walk pas t the pivot . The ass is tant

should note the amount of free fall.

e . The correct amount of fa l l is 3 to 4 inches( 7 6 . 2 - 101 . 6 m m ). I f l e s s , the re i s no t enough a i r

in the cyl inder. If more, there is too much air in the

cy l inde r .

F I G U R E 9 - 1 2 . F I L L I N G T H E H P A N D G H P F I G U R E 9 - 1 4 . L O C AT I O N O F S L O T F O R

S E R I E S T I L T C Y L I N D E R .

9-41. DISASSEMBLY OF TILT CYLINDERS

9 - 4 2 . B e s u r e t o h a v e a r e t a i n i n g r i n g , o r i n g s ,

b a c k u p w a s h e r , and pis ton teflon seal on hand prior

t o d i s a s s e m b l y o f t h i s c y l i n d e r . These pa r t s wi l l

usua l ly be dam aged dur ing d i s a s sem bly . Disas sem

bl e as fol lows:

a. Using a punch or piece of key stock, push the

retaining ring around the slot so that it can be forced

out and gripped (see figure 9-14).

b. Pul l the re ta ining r ing out of the s lot .

c . Extend the rod to dis lodge the head.

d. If the rod needs repacking, i t is recommended

that the pis ton nut and pis ton be removed. The pin

end of the rod may be s l ight ly dis torted.

9-43. REASSEMBLY OF TILT CYLINDERS

944 . Reve rse the p rocedure in 9 -42 and d r ive in

a new retainer ring.

F I G U R E 9 - 1 3 0 M E A S U R I N G F R E E F A L L O N

H P S E R I E S P L A T F O R M .

R E T A I N I N G R I N G .C h a n g e 3 9 -1


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TM 5-2330-361-14&P

1 0 - 1 . G E N E R A L .

1 0 - 2 . T h i s H Y S T E R t r a i l e r i s e q u i p p e d

w i t h a 2 a x l e r u b b e r b u s h e d , w a l k i n g

b e a m s u s p e n s i o n w i t h a l i g n m e n t f e a t u r e s .

B e f o r e s e r v i c i n g u n d e r c a r r i a g e c o m p o n e n t s

b e s u r e t h a t t h e p a r t s a r e b l o c k e d o r

s u p p o r t e d b y a h o i s t o r o t h e r e q u i p m e n t 1 0 - 6 . AL I G N M E N T C H E CK P R O CE DU RE (s e e

c a p a b l e o f h o l d i n g t h i s h e a v y e q u i p m e n t . figure 10-1).

1 0 - 3 . U N D E R C A R R I AG E A L I G N M E N T . a . B l ock t r a i l e r l eve l wi t h t i r es c l ear o f g round

and remove f ront wheels and hub caps.

1 0 - 4 . G E N E R A L .

b . Wi t h s t ee l t ape measu re d i s t ance "R" and L10-5. When a trai ler steers or dogs to one side, the f r o m l u n e t t e e y e t o c e n t e r o f a x l e s p i n d l e , a s

undercarriage should be aligned. shown i n f igure 10-1.

F I G U R E 1 0 - 1 . F R O N T A X L E A L I G N M E N T .

F I G U R E 1 0 -2 . T A N D E M A L I G N M E N T F I G U R E 1 0 -3 . A L I G N M E N T S C R E W SDE T AIL .

10-1.


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c . D i s t a n c e R a n d L s h o u l d b e e q u a l , I f

n o t , m a k e a d j u s t m e n t o f a l i g n m e n t s c r e w s u s i n g

p r o c e d u r e g i v e n i n p a r a g r a p h 1 0 - 7 u n t i l e q u a l R

an d L dis t an ce is obta ined .

10-7 . TANDEM ALIGNMENT P ROCEDURE.

10-8. If the uni t is s teering left , as shown in f igure

10-2 , co r rec t the a l ignm ent a s fo l lows :

a , L o o s e n a l l l o c k n u t s a t p o i n t s A a n d B

(see figure 10-3).

b. Loosen the four (4) alignment screws A and

tighten the four (4) a l ignment screws B. Continue

this procedure unt i l tandem is in a l ignment .

NOTE: To prevent ports from binding, it is recom-m e n d e d t h a t p a i r s o f s c r e w s b e t i g h t e n e d

at the same time.

c . T igh ten a l l locknu ts a f t e r t andem i s a l igned

and screws are t ight .

d . I f un i t i s s t ee r ing r igh t , loosen the four (4 )

alignment screws B and tighten the four (4) align-

m e n t s c r e w s A , the oppos i t e o f above p rocedure .

10-14. CORRECTING TIRE SCUFF AND UN-EVEN WEAR.

10-15. C H E C K I N G T I R E S C U F F - F I R S T W H E E L

ALIGNMENT TEST.

10-16 . F ea the r edg ing , s cuf f ing , and uneven wear

of t i re s show need fo r a l ignm ent check . s c u f f

h a s t o b e c h e c k e d o n a w h e e l a l i g n m e n t t e s t e r . A

reading of 16 ft. (4.88 metres) runout per mile or less

i n d ica t e s s a t i s fa c t or y a l i gn m e n t . A r e a d i n g i n e x-

cess of 16 ft. (4.88 metres) per mile reveals a need

for check ing the cause o f exces s ive runou t . Check

t h e w h e e l b e a r i n g s , a n d c h e c k f o r w h e e l s w h i c h a r e

b e n t o r b r o k e n . I f t h e w h e e l b e a r i n g a n d w h e e l

c h e c k r e v e a l n o t h i n g , c h e c k f o r b e n t a x l e s a n d

s p i n d l e s .

1 0 - 1 7 . C H E CK I NG AXL E S P AC IN G - S E CO N D

ALIGNMENT TEST.

1 0 - 1 8 . A n o t h e r c h e c k t o d e t e r m i n e t h e c a u s e s o f

the wea r cha rac te r i s t i c s above i s a s fo l lows :

a . W it h t r a i le r u n loa d ed , s ee t h a t a ll a xl es a r e

level .

b . Remove hub caps and, us ing t rammel equipped

w i t h e x t e n d e d p o i n t s , c h e c k c e n t e r d i s t a n c e s o f t h ef i r s t and s econd ax le on bo th s ides o f the t ra i l e r

(see figure 10-5).

c. I f above d i s t ances va ry m ore than 1 /16 in .

1.59 mm), check further for bent spindle, axle or

other mechanical damage.

10-19 . CHECKING AXLE F OR BEND.

1 0 - 2 0 . S c u f f e d t i r e s o r u n e v e n w e a r m a y i n d i c a t e

a ben t ax le . Check a s fo l lows :

FIGU RE 10-5. MEASURING AXLE CE NTER S.

10-2.


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a. Remove wheel assembly and bearings .

b . P lace ax le gauge in pos i t ion on f ron t s ide o f

the axle (see paragraph 10-6).

c . With the s ingle pronged end of the gauge held

firmly agains t the inner bearing surface , adjus t the

d o u b l e p r o n g s o n t h e o t h e r e n d o f t h e g a u g e u n t i l

they contact the inner and outer bearing surface .

d. Now move the gauge over to the rear s ide of

the axle . If either of the two (2) prongs fails to make

c o n t a c t , a b e n t s p i n d l e i s i n d i c a t e d . U s e a f e e l e r

gauge to determine the amount of the bend. If bend

i s in exces s o f . 0156 in . (0 . 3962 m m ), rep lace the

axle .

e . I f check ing bo th s ides o f one sp ind le revea l s

no bend in the axle , turn the gauge end for end and

c h e c k t h e o t h e r s p i n d l e w i t h o u t d i s t u r b i n g t h e s e t -

ting of the prongs.

f . If there is c learance a t e i ther bearing surface ,check with a feeler gauge. If the prongs are in con-

tact at both points, the axle is not bent.

10-21 . CHECKING AXLE CAMBER.

1 0 - 2 2 . I n c o r r e c t c a m b e r w i l l c a u s e w e a r o n o n e

side of the tread. Check as follows:

a . F o l l o w p r o c e d u r e p r e s e n t e d t o d e t e r m i n e a x l e

is not bent . If so determined, proceed with s teps b

thru e .

b . S e t t h e p o i n t s o f t h e a x l e g a u g e i n e x a c t l y

the same pos i t ion on the axle and in the s am e m an-

ner as out l ined in s teps b and c in paragraph 10-20.

c . P lace the gauge direct ly under the axle .

d . P o s i t i v e

p r o n g a n d t h e

c a m b e r - c learance between the inner

b e a r i n g s u r f a c e s h o u l d n o r m a l l y b e

between .040 in. (1.016 mm) and .080 in. (2.032 mm).

As long as the axle mainta ins camber, i t should be

sa t i s fac to ry ( s ee f igure 10-7) .

e . N e g a t i v e ca m b e r - cl e a r a n c e b e t w e e n t h e

o u t e r p r o n g a n d t h e b e a r i n g s u r f a c e w i l l i n d i c a t e a

sagg ing ax le . Recam ber o r rep lace ax le ( s ee f ig -

u r e 10-7).

10-23. RUBBER BUS HIN GS.

1 0 - 2 4 . G E N E R A L .

1 0 - 2 5 . T h e r u b b e r b u s h e d t a n d e m i s d e s i g n e d t o

prov ide long and s a t i s fac to ry l i fe . However , i f i t i s

im poss ib le t o secure p rope r t andem a l ignm ent o r i f i n s p e c t i o n r e v e a l s n e e d f o r r e p l a c e m e n t ( r u b b e r

bu lg ing , b reaks , o r s l i ce s ) , the change can be m ade

with a minimum of equipment.

1 0 - 2 6 . R E P L A C E M E N T O F R U B B E R B U S H I N G S .

10-3 .F I G U R E 1 0-6 . C H E C K I N G F O R A XL E B E N D A N D C AM B E R .


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10-30.

1 0 - 3 1 .

REMOVING AXLES.

U s i n g e q u i p m e n t o f a d e q u a t e c a p a c i t y , r e

m ove the en t i re t andem axle a s sem bly be ing

s e r v i c e d . P r o c e e d a s f o l l o w s :

a . R e c o r d t h e d i s t a n c e f r o m t h e t o p o f t h e a x l e

to the top of the cam, and whether the cam is to the

front or rear.

b . Remove wheels , drums and foundat ion brakes .

c , R e m o v e t h e n u t s a n d r u b b e r b u s h i n g s r e t a i n -

ing the axle on the walking beams.

d . Rem ove the ax le .

10-32. INSTALLING AXLES.

a . S e t t h e t a n d e m b r a c k e t s a t t h e s a m e c e n t e r s

as the b racke t s we lded to the t ra i l e r f ram e .

b. Ins ta l l new cas t re ta iner brackets on the ends

o f t h e w a l k i n g b e a m s w i t h a n a x l e s e a t e d , b u t n o t

w e l d e d , i n t h e s a d d l e o f t h e b r a c k e t s ( s e e f i g u r e

10-10) . T h e c a m b e r m a r k s s h o u l d b e l o c a t e d o n

t o p o f t h e a x l e d u r i n g t h i s p r o c e d u r e . S ee f igure

1011 for cam ber m ark loca t ion .

c. S qu a r e t h e u n d er ca r r i a ge . T h e ex is t in g a xl e

should be squared with the walking beams as c losely

a s p o s s i b l e w i t h o u t c h a n g i n g t h e c e n t e r s o n t h e

tandem hange rs .

d . C h e c k t h e d i s t a n c e f r o m a s t r a i g h t e d g e p l a c e d

over the sp ind le ends to the t andem m ount ing b racke t

p l a t e ( s e e f i g u r e 1 0 1 2 ) . C o m p a r e t h i s d i s t a n c e

w i t h a c o r r e s p o n d i n g d i s t a n c e o n t h e o p p o s i t e s i d e .

M o v e t h e a x l e i n t h e c a s t r e t a i n e r s a d d l e t o g e t

t h e s e d i m e n s i o n s e q u a l .

e . C h e c k t h e n e w a x l e f o r b e n d a s s h o w n e l s e

where in this sect ion. If bend is over 1/64 in. (.397

mm) as shown in the procedure , rota te the axle very

s l ight ly and check again. If the bend dimension be

c o m e s g r e a t e r , t r y r o t a t i n g t h e a x l e t h e o p p o s i t e

d i r e c t i o n . W h e n t h e a x l e f a l l s u n d e r t h e 1 / 6 4 i n .

(.397 mm) maximum bend, mark the axle in some way

t o k e e p t h i s p o s it i o n . C h e c k t h e c a m l o c a t i o n t o

e n s u r e t h a t i t w i l l b e c l o s e t o b e i n g t h e s a m e a s

t h a t o n t h e a x l e b e i n g r e p l a c e d .

f. C h eck t h e d is t an ce fr om t h e ce nt e r of t he

spindle of one axle to the center of the other. Check

t h i s d i s t a n c e o n t h e o t h e r s i d e ( s e e f igure 10-13) .

I f t h e s e d i s t a n c e s a r e n o t e q u a l ( R 1 = L 1 ) , p l a c e a

wedge be tween the ax le and s add le to ge t them the

sam e (s ee figure 10-14).

g . Check d im ens ions ac ros s corne rs . Loca te the

top center of the axle a t 2 in . (50.8 mm) in from the

b r a k e s p i d e r . M a r k t h i s p o i n t ( s e e f igure 10-15).

Be very accurate as this dimension is cr i t ica l . Make

this mark a t four (4) locat ions . Measure the dis tance

b e t w e e n m a r k s d i a g o n a l l y a c r o s s t h e t a n d e m . T h e

two diagonal measurements (A & B) should be equal .

I f n o t , a d j u s t t h e n e w a x l e i n i t s s e a t a s r e q u i r e d

(see figure 10-16).

FU GURE 10-10. AXLE SEATED IN CAST

BUSHING RETAINER.

FIGURE 10-11. AXLE CAMBER MARK.

10-5 Cha nge 3


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FIGURE 10-12. EQUALIZING AXLE OVERHANG.

TM 5-2330-361-14&P

h . C h e c k s t e p s c t h r o u g h g a g a i n t o g e t t h e k. Put a new cam bushing bracket over the cams.

unde rca r r i age a s c l o s e a s p o s s i b l e t o a l i g n m e n t P u t o n t h e s l a c k a d j u s t e r a n d s n a p r i n g t o f i x t u r e

pr io r to we ld ing the ax le in p lace . I f d i f f i cu l ty i s the bracket . Weld the bracket in place .

e x p e r i e n c e d i n s t e p g , c h e c k t h e l o c a t i o n o f y o u r1. B o l t t h e p o w e r c h a m b e r i n p o s i t i o n o n t h emarks for accuracy.

power chamber bracket and connect the yoke to thei . Tack the axle in pos i t ion on the cas t re ta iner . s l a c k a d j u s t e r .

j . Assemble the foundat ion brakes onto the axle . m. P o s i t i o n t h e p o w e r c h a m b e r b r a c k e t o n t h e

FIGURE 10-13. EQUALIZING AXLE CENTE RS.10-6.


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TM 5-2330-361-14&P

a x l e w h i l e t h e s l a c k a d j u s t e r , p u s h r o d , a n d p o w e r

c h a m b e r m o u n t i n g f a c e a r e i n t h e s a m e p o s i t i o n a s

on the ex i s t ing ax le ( s ee figure 10-17).

n. Tack weld the power chamber in place .

o . C h e c k a l l c l e a r a n c e s a n d w e l d t h e c a s t r e -

t a ine r on the ax le us ing 5 /32 (3 . 97 m m ) E7018 e lec -

t r o d e ( s e e f i g u r e 1 0 - 1 8 ) . P e e n i m m e d i a t e l y a f t e r

we ld ing .

P . A s s e m b l e t h e h u b a n d d r u m a s s e m -

b l i e s t o t h e a x l e a n d a d j u s t t h e b r a k e s .

q . Aga in com pare the s l ack ad jus te r ang le , push

rod angle , and push rod to mounting face angle with

tha t o f the o r ig ina l ax le . Also , check fo r b ind be -

tween the push rod and push rod hole . If this checks

out , weld the power chamber bracket on.

F I G U R E 1 0 - 1 4 . W E D G I N G B E T W E E N C A S T

R E T A I N E R A N D A X L E T O O B T A I N F I N E

A D J U S T M E N T O F A XL E C E N T E R S .

FIGURE 10-15 MARKING CHECK POINTS FOR DIAGONAL MEASUREMENT

FIGURE 10-16. EQUALIZING AXLES THROUCH DIAGONAL MEASUREMENT.

1 0 -7 C h a n g e 3


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FIGUR E 10-17. BRAKE ACTUATOR GE OMETR Y.

FIG URE 10-18. WELDING CAST BUSHING R ETAINER TO THE AXLE.

10-8.


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11-1.

11-3.

11-4.

These

GENERAL.

HUB REMOVAL.

Section 4 covers removal of disc wheels.

should be removed before removing hubs .

Support the hub assemblies prior to removal . The

hub and d rum a re rem oved a s an a s sem bly us ing the

fo l lowing p rocedure :

a . Back off the brake adjus tment by turning the

a d j u s t i n g s c r e w o n t h e s l a c k a d j u s t e r .

b . Rem ove the hubcap .

c . Bend the f lap or tang of the lockwasher away

from the flat of the outer spindle nut.

d . R e m o v e t h e o u t e r s p i n d l e n u t , t w o (2) l o c k -

washe rs , and the inne r sp ind le nu t .

e . P u l l t h e h u b a n d d r u m a s s e m b l i e s c a r e f u l l y

t o a v o i d d a m a g e t o t h e b e a r i n g s , s p i n d l e , a n d i n -

n e r s e a l . Catch the bearing cones as the hub is

removed from the spindle .

11-5. INSPECTION AND CLEANING,

11-6. Wh ile t h e h u b is r em oved , in sp ect

t h e c o n d i t i o n o f t h e b r a k e d r u m a n d l i n i n g s ( s e e

Sect ion 8) . Also check the cond i t ion o f the cups ,

co n es , s ea l , a n d a xl e r i n g.

11-9. PREPARING BEARINGS (OIL LUB-

RICATION).

1 1 - 1 1 . HUB INS TALLATION.

1 1 - 1 2 . A f t e r t h e p a r t s h a v e b e e n i n -

s p e c t e d a n d c l e a n e d , i n s t a l l a s f o l l o w s :

a . A s s e m b l e t h e i n n e r c o n e a n d s e a l i n t o t h e

h u b .

b . P l a c e t h e h u b o v e r t h e s p i n d l e b e i n g c a r e -

ful to avoid damage to the spindles , seals and brakes .

c . Put the outer cone into pos i t ion.

d . T i g h t e n t h e i n n e r s p i n d l e n u t w h i l e r o t a t i n g

the wheel both direct ions unt i l a s l ight bind is fe l t .

e . B a c k o f f t h e n u t 1 / 4 t u r n . T h e h u b s h o u l d

rota te freely.

f . Ins ta l l inner nut lock and place the lockwasher

on the spindle .

g . T igh ten the ou te r nu t .

h . The end p lay shou ld be . 001 in . ( . 0254 m m )

to .010 in. (.054 mm).

i . Lock the outer spindle nut in place by bending

the tangs or edge of the lockwasher ove one f la t on

t h e o u t e r n u t .

j . I n s t a l l h u b c a p g a s k e t a n d h u b c a p .

l u b r i c a t e d a s s e m b l y t o t h e f u l l l i n e o n

cap window.

k . R e a d j u s t t h e b r a k e s .

Fill oil

the h u b

1 1 - 1 0 . C o a t t h e b e a r i n g c o n e s a n d c u p s w i t h o i l

prior to assembly.

1 1 - 1 .


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12-9. REPAIR PROCEDURES.

12-10. O l d w e l d m e t a l a n d s o m e m a t e r i a l a r o u n d

cracks should be ground away and weld repairs made.

Avoid we ld ing on the edge o f p la te s o r f l a t s used

a s l o a d - c a r r y i n g m e m b e r s u n l e s s a b s o l u t e l y n e c e s -

sary to cover a fracture. The addition of a dutchman

( s e e f i g u r e 1 2 - 1 ) or f i s h p l a t e , p o s s i b l y w i t h p l u g

weld holes , may be required to t ransfer s t ress across

we ld repa ir a reas . Weld rod cho ice shou ld m a tch the

l e s s e r s t r e n g t h s t e e l b e i n g r e p a i r e d u n d e r n o r m a l

cond i t ions . A downhand repair being made between

a c r o s s m e m b e r m a d e o f E x - T e n 5 0 s t e e l a n d a T - 1

s tee l beam , fo r exam ple , requ i re s an AWS E6014

e lec t rode .

1 2 - 1 3 . L A S H R I N G S .

1 2 - 1 4 . F i g u r e 1 2 - 3 s h o w s h o w t o w e l d l a s h r i n g

c l ips .

FIGURE 12-3. LASH RIN G CLIPINSTALLATION.

12-2.


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PARTS MANUAL

HP15T-MIL


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H o w T o T h e T h e I l l u s t r a t e d P a r t s M a n u a l

T h i s P a r t s B o o k d e s c r i b e s a n d i l l u s t r a t e s a s s e m -

b l i e s , s u b - a s s m b l i e s a n d d e t a i l p a r t s n e e d e d

TM 5-2330-361-14P HYSTER HP15T-MIL TRAILER

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