International Harvester 234 | 244 | 254 Service Manual...IH-S-234+ General Contents Safe Work Rules,...

19
Service Manual Service Manual THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF INTERNATIONAL HARVESTER OR IT’S SUCCESSORS. INTERNATIONAL HARVESTER AND IT’S SUCCESSORS ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL. TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS. 234, 244 & 254 IH-S-234+

Transcript of International Harvester 234 | 244 | 254 Service Manual...IH-S-234+ General Contents Safe Work Rules,...

Page 1: International Harvester 234 | 244 | 254 Service Manual...IH-S-234+ General Contents Safe Work Rules, Standard Torque Data for Hydraulic Tubes and Fittings, Metric Conversion Tables,

Servic

e M

an

ual

Service Manual

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF

INTERNATIONAL HARVESTER OR IT’S SUCCESSORS. INTERNATIONAL HARVESTER AND IT’S SUCCESSORS

ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.

TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS,

AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

234, 244

& 254

IH-S-234+

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General Contents

Safe Work Rules, Standard Torque Data for Hydraulic Tubes and Fittings, Metric Conversion Tables, Standard Torque Data for

Page

Nuts and Bolts, Special Service Tools Required . ................................. IV-XIII Service Information System (SIS) ................................................. XIV

I 11 1 21

I 31 I 41

I 51 I 61 I 11 I 81

1 91

I 10 I

I 11 ·1

1 121

I 131

1 141 III

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Section 1

TRACTOR SPLITS

Contents

Page

Clutch Split (234, 244 and 254 Tractors) .••.•............•.•.•.....•.•..........•.. 1·2

Transmission Split (234 Tractor) •......•..••.......•.......•..................... 1·6

Speed Transmission (244 and 254 Tractors) ................•.........•....•......... 1·10

Range Transmission (244 and 254 Tractors) ..•...........•..•..•......•.......•...• 1·14

Note: If the seat belts or "ROPS" are removed, the proper mounting hardware and torques must be used when reinstalling.

234 Tractors: Seat belts

ROPS

244/254 Tractors: Seat belts

ROPS

7/16"- 20 x 1 1/2 51.5 N·m (38 ft. Lbs.) (grade 5)

10 mm bolts 58.3 N·m (43 ft. Lbs.) 12 mm - 1.25 x 40 mm 70.5 N·m (52 ft. Lbs.)

(grade 10.9)

7116"- 20 x 1 1/2 (grade 5)

14 mm - 2.0 x 35 mm (grade 10.9)

51.5 N·m (38 ft. Lbs.)

1 08.5 N·m (80 ft. Lbs.)

Be sure to tighten mounting bolts to specified torque.

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Section 2

FRONt END, AXLE AND WHEELS

Contents

Page

Four-Wheel Drive Axle • • • . • . . . . . . • • • . . . . • . • • . . • • . . . • . • . . . • • . • • . • • • • . . • . . • • . . . .. 2-2 Differential Assembly .•••••...••.•.•.•.•.•••••••••...•••••.••.•.•.•••••.•.... 2-4 Pinion Case •.••.••.•..•....•••.........•..•.•..•....••...••..•.•••.••.•.... 2-5 Pinion Gear Mounting Distance .•..•.••....•....•..•.............•...•......... 2-6 Differential End Play .••............•.......•.•.•.....•..•••...•...•....•.•.. 2-7 Wheel Hub Assembly .....•..••.•..•.••..•....•....•......•.....•.....••..... 2-10

Two-Wheel Drive Axle ...•...•.•..•.........•..••.•...••..........•......•..•.. 2-18 Wheel Hub Assembly .•.........•..•..•...•.•.•.••.•••.•...•....•.••....•.... 2-19 Spindle Assembly ••...•••.•••••••...••.•.•.•••.••..•••..••••.•..•.•...•....• 2-21

Adjusting Toe-In ..•..•....•..•...................•...•.........•...........•• 2-23

Steering Stop Angle . . . . • • . • . . • . . • . . . . . . . . . • . • . • . . . . . . • • • . • . . • . . . . . . • • . . . • . . . .• 2-23

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Section 3

STEERING

Contents

Page

Steering Gearbox •..•..•........•..•.•.•..•..•.....•........•.......•.......• 3-2

Removal .....•....•.•........•••..•.•.•••...•........•.•.•....•••.•...•. 3-2 Disassembly .. . . . • . • • • • . • • • . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . • . • . . . . . . . . . . . . .. 3·4 Reassembly and Installation . . . . • . . . . . • . . • . • • . . . • . . . • . • • . . • . . . . . • . . . • • . . . . • . .. 3-6 Steering Wheel Free Play Adjustment. • . . . • • . • • . • • . . . • . . . . • . • . . • . • . • • • • . . • . . . . •• 3-7

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Section 4

ENGINE

Contents

Page

Specifications . • . . . . • . . . . . . . . . . . . . . . . . . . . • . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Special Torques. . . . . . . . . . . . . . . . . . . • . . . . . • . . . • . . . . . • • . . . . . . . . . . . . . . . . • . . . • . . 4-9

Engine Removal from Chassis. . . . . . . . . . . . . . • • . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . • . 4-10

Engine Installation into Chassis. • . . . . . . . . . . . . • . . . . • • . . . . . . . . . . . . . • . . . . . . . . . . . . . 4-11

Mounting Engine on Engine Stand. . . . . . . . . . . . . . . . . . • . . . . . . . . • . . . . . . . . . . . . . . . . . 4-12

Engine Checks and Adjustments. . . . . . . • • . . . . . . . . • . . . . . . . • • . . . . . . . . . . . • • . • • . . . . 4-12 Valve Clearance Adjustment .. . . . . . . . . . • . . . . . . . . . . . • . . . . . . . . . . . . • . . . . . . . . . 4-12 Valve Timing. . . . . . . . . . . . . • . . . . . . . . . . . • . . . . . . . . . . . • . • . . . . . . . . . . . . . . . . . . . . 4-13 Injection Timing and Engine Speed Adjustments. . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . 4-14 Compression Pressure Check. . . . . . . . . . . . . • . . • . . . . . . • . . . . . . . . . . . . . . . • . . . . . . • . 4-14

Manifolds. • . . . . . . . . . . . . . . • . . . . . . . . . . . . • . . . . . . . . • . . • . . . . . . . . . . . . . . . • . . . . . . 4-15

Cylinder Head Assembly. . • . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . • . . . . . . . 4-15 General Description. . . . . . . . . . . . . . . . . . • . . . • . . . . . . . . . . . . . . . • . . . . . • . . . . . . . . . . 4-15 Removal and Disassembly Precautions. . . . . . . . . . . . . • . . . . . . . • . . . . . . . . . . . . • . . . . . 4-16 Rocker Arm Assembly. . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17 Valves, Seats and Guides. . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . 4-18 Cylinder Head Proper. . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . 4-20 Valve Springs. . . . . . . . . . . . . . . . . . . . . • . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . 4-21 Push Rods. . . . . . . . . . . . . . . • . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21 Cylinder Head Torquing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . 4-22

Connecting Rods, Pistons and Piston Rings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . • . . • . . 4-23 General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23 Removal . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . 4-23 Disassembly. . . • . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . • 4-23 I nspection and Repair .............................•...........•......••.. 4-23 Reassembly and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . • . . • . . . . . . . . . . 4-25 Fitting Connecting Rod Bearings. . . . . . . . . . • . . . . • . . . . . . . . . . . • • . . . . . . . . . . . . . . . . 4-27

Cylinder Block . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . • . . . . . . . . . . . . . • . . . . . • . . . . . . • . 4-28 Cleaning . . . . . . . . . . . . . . . . . . . . . . • . • . . . . . . . . . . . . . . . . • • • . . . . . . . . . . . . . . . . . . . 4-28 Inspection and Repair. . . . . • . . . . . . . . . . • . . . . . . . . . . . . . • . . . . . . . . . . . . . • . . . . . . . • 4-28

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Crankshaft and Main Bearings. • . . . • . . . • • • . . • . • • . . • . . . . . . . . . . . • . . . . • • . . • . . . . . . . 4-29 Inspection and Repair. • . . . . . . • • . . • . • . . . . • . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . • . . 4-30 Fitting Main Bearings • • . . • . . . . . . • • . . . . . . . . • . . . . • . • . • • . . . • . • . . . . . . . . . • . . . . . 4-31 Crankshaft Installation. . . . . . . • . . . . . . • . . . . • • • . . . . . . . . . . . . . • . • . . . . . . . . • . . . . . 4-32

Camshaft and Tappets. . . . • . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34 Removal . • . • . . . . . • • . . • • . . . . . . . • . . . . . . . . . . . • . . . . • . • . . . . . . . . . . . . . . . . . • . . . 4-34 Inspection and Repair. • . . . . • . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . • . . . . • . . . . . 4-35 Installation. . . . • . . . . . . . . • . • . . . . . . . . . . . . . . • . . . . • . . • • . . . . . . . . • . . . . . . . . . . . . 4-36

Timing Gear Case . . . . . . . • . • . . . . . . . . . . . . . . . . . • . . . . • . . • • . . . . . . . . . . • • . . . . . . . . . 4-37 Removal . • . . . • • . . • • • . . • . . . . . . . . . . . . . . . . . • . • . . . . . • . • • . • . . . . . • . . . . . . . . . . . 4-37 Inspection and Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

Timing Gear Train. . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . 4-39

Lubrication System. . . • . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . 4-41 Oil Pump Service. . . • . . . . . . . . . . . • . . . . . . . . • . . . . . . . • • • . • . . . . . • . . . • . . . . . . . . . . 4-42

Cooling System. . • • . . . . . . . . . . . . . . . . . . • . . . . . . • . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . 4-43

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Section 5

FUEL SYSTEM

Content!

Page

Specifications . • . . . . • . • . • • . • • . • • • . . • • • . • • . • . • • • • . • . • . • . . . . • . • . • • . . • • • • • • • • • 5·2

Special Torques .•••••.••.•.•.•••.•.•.•..•.•.•••...•....••...•.•••••••.• ; • • • 5-2

General Description. . • • • • • • • . • . • • . . . . . • • • . • • • • . . . • . . • • • • . • . . • • • . • . . . . • • • • . . . 5-3

Venting the Fuel System. • . • . . . • . • • • • . . • . • . . • • • • • . • • . • • • • . . • • . • . • • • • • . . . • • • . • 5-7

Injection Timing and Engine Speed Adjustments . . . . . . • . . . • • . • • • . . • • . • • . . • • • • • • . • . 5-7 Injection Timing. • . • . • • . . • . • . • . • . • • . . • . • • . • • . • . • . • • . • . • • . . . • • • . . . • . • . • . . . 5-7 Engine Speed Adjustments . . • • • . • • • • • . • . . • . . • . • • . • • • • . . . . . . . • . • . . . . • . . . • . • . 5-9

Injection Pump Service. • • • . • . • . . • • . • . • . • . . . . • . . • • . • • • • • • • . • • • . • • . . . . • . . . . . • . 5-11 Pump Removal. •.• ••••••• .•. . .. •••. ••. . • . •. ••. ••. . •. •. . . •. •• .• ••• . . . . • •. 5-11 Pump Installation. • • • • • . • • • . • • . • • . • . . • • . • . . . • . . • . • • • • • • • . • • . • • . • • • . . • • • • • 5-12 Delivery Valve Testing and Replacement. • • . • . • . . • . . . • . • • . • • • . . • • • • . • • • • . • • . • • • 5-12 Pump Plunger Leakage Testing. . • . • • • . • . • • • . • . • . . • . . • • • • . . • . • • • • . . . . • • . • . . • . 5-13

Pump Drive Camshaft. • . • . • . . • . . • • • . • . . • . . • . . • • . . . . . . • • . . . . • • . . . . . • . • . • • • . . . 5-15 Removal. . . • . • . . • . . • . • . . . • • • • • . • . • . . • . • . . • . . . . • . • . . • . • • . . . • . . . . . . • . . . . • 5-15 Inspection and Repair. . . • . • . . • . • . . . . • • . . • • . . . . • . . . • • • . . . • . . • . . • . . . . . . . . . • . 5-15 Installation. . . . . • • . • . • . • . . . . . . • . • . • • • • • . . • • • . . . • • • . • . . • . . . • . . . . . . . . • . • . • 5-16

Governor System Service. . . • . . . . • • • . . • • . . • . • . . . • • . • • • . . • • . . . . . . . • . . • • • . . • . • . • 5-16

Fuel Shut-Off Solenoid Replacement. • . • . • • . . . . . . • • . • . • • . . . • • . . . . . . • . . . . . • . . . • . 5-17

Injection Nozzle Service. . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Fuel Tank. . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

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Section 6

ELECTRICAL

Contents

Page

Specifications • . . . . . . . • • . • . . • • . . . . . • • • . • . . • . . . • . • . . . • . • . • • . . . . • • . . . . • • • • • • . • . •• 6-2

Safety Start Switch .....•..•.•.•..•..•......•..•.••.....•.••.••.•..•.•••.••...•• 6-3

Engine Stop System Using the Key Switch ...••..•....•..••.•.••.••...•.••..•..•.••. 6-3

Troubleshooting Chart. • • . • • • • • • . • • . . . • • . . . . . . . . . . . . . . . . . • . . . . • . • • . • . . • • • . • • . • .• 6-4

Fuel Shut-Off Test Procedure .••••••...•.•.•..•••.•.•••...••••.••...•••..•••.••.. 6-5

Wiring Diagram of Electric Shut-Off System ......................•..•.•.....•....•.• 6-7

Electrical System Wiring Diagram. . . . . . • . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . • . .• 6-8

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Section 7

COOLING SYSTEM

Contents

Page

Radiator (234 Tractor) ...............•......................•.......•.•..•.••.• 7-2 Removal ..................•.....•.....•.•...•..•......•.•......•...••..... 7-2 Installation. . . . • . . . . • . . • . . . . . . . . . . . . . . . . . . . . . . . . • . . . . .. . •......•.•..•.•..• 7-2

Radiator (244 and 254 Tractors) ........•.•......•...........••.•.....•....•..... 7-3 Removal . . . . . . . . . . . . . . . • . . . . . . . • . . . . . . . . . . . • . . . . . . . . . . . . . . • . . . . . . . . . • . . • .. 7-3 Installation ...........•.•...................•..........•................... 7-4

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Section 8

CLUTCH AND FLYWHEEL

Contents Page

Clutch and Flywheel (234, 244 and 254 Tractors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8·2

Clutch Housing Replacement (234 Tractors) ................•...................•... 8·4

Clutch Housing Replacement (244 and 254 Tractors) ................................. 8·7

Clutch Release Shaft (234,244 and 254 Tractors) .................................... 8·10

Clutch Pedal Adjustment ............................. . . . . . . . . . . . . . . . . . . . . . . . . .. 8·12

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Section 9

TRANSMISSION

Contents

Page

Transmission (234 Tractors) . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . • . . . . . . . . . . . . . . • . . . .. 9-2 Removal ........................................................••.•..••.. 9-2 Disassembly ...•........•............•.............•.........••...••......• 9-2 Reassembly and Installation ..•.............................•.........•...•.... 9-10

Gear Shift Cover (234 Tractors) ..........................•....•.........•........ 9-20 Removal and Disassembly ................•...................•.....•......... 9-20 Reassembly and Installation .............•...........................•.....•... 9-22

Speed Transmission (244 and 254 Tractors) . . . . . . . . . . . . . . . . . . . . • . • . . . . . . . . . . . . . . . . .• 9-23 Removal ...............•..•........•....•..•....•.•..•....•.•...••.....•.. 9-23 Disassembly ..................•..........•.......................••........ 9-24 Reassembly ..............................................................• 9-31 Installation .................•......................•......................• 9-38

Range Transmission (244 and 254 Tractors) ......•.......•...................•..... 9-39 Disassembly ...............•...........•......................•............ 9-39 Reassembly ........................•...................................... 9-48

Gear Shift Cover (244 and 254 Tractors) ........................................... 9-56 Removal and Disassembly ...................................................• 9-56 Reassembly and Installation ..................................................• 9-58

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Section 10

01 FFERENTIAL

Contents

Page

Differential Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10·2 Removal. . . . . . . . . . . . . . . • . . • . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2 Disassembly. . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3 Reassembly. • . . . . . . . . . • . . . . . . . . • . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4 Installation. . . . . . . • . • . . • . • . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4

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Section 11

REAR AXLE CARRIERS

Contents

Page

Rear Axle Carrier (234 Tractors) . ................................................. 11-2 Removal .................................................................. 11-2 Disassembly ................................................................ 11-4 Reassembly and Installation ................................................... 11-6

Rear Axle Carrier (244 and 254 Tractors) . .......................................... 11-8' Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-8 Disassembly ................................................................ 11-9 Reassembly and Installation ................................................... 11-14

11-1

Page 15: International Harvester 234 | 244 | 254 Service Manual...IH-S-234+ General Contents Safe Work Rules, Standard Torque Data for Hydraulic Tubes and Fittings, Metric Conversion Tables,

Section 12

BRAKES

Contents

Page

Brake Assembly ...•...........................................•...•....... 12-2 Removal ...•.•..........................•.............................. 12-2 Service Maintenance Chart ..................•.............................. 12-3 Disassembly and Reassembly ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3

Adjusting the Brake Pedal Height. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4

12-1

Page 16: International Harvester 234 | 244 | 254 Service Manual...IH-S-234+ General Contents Safe Work Rules, Standard Torque Data for Hydraulic Tubes and Fittings, Metric Conversion Tables,

Section 13

POWER TAKE OFF

Contents

Page

PTO Output Shaft (234 Tractor) ....................•............................. 13·2 Removal and Disassembly ..................................................... 13·2 Reassembly and Installation ................................................... 13·4

PTO Output Shaft (244 and 254 Tractors) ........•...................•....•........ 13·5 Removal and Disassembly ..................................................... 13·5 Reassembly ................................................................ 13·8 Installation ................................................................. 13·8

Live Rear PTO (244 and 254 Tractors) ......................................... 13.9 Principles of Operation ....................................................... 13.10 Removal and Disassembly .................................................... 13.15 Reassembly .................................................................. 13.22

Troubleshooting ................................................................ 13.32

GSS 1507·1 (Rev. No. 1) Printed in the United States of America

13·1

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13-7

9. Remove the rear bearing snap ring from the rear frame housing.

1. PTa rear bearing 2. Snap ring

10. Bend back the lock washer tab and re­move the slotted nut.

1. Lock washer 2. Slotted nut

11. Using a brass drift, drive the PTa output shaft out the rear frame.

1. PTa output shaft 2. Brass drift

12. Service the PTa shaft as required.

Page 18: International Harvester 234 | 244 | 254 Service Manual...IH-S-234+ General Contents Safe Work Rules, Standard Torque Data for Hydraulic Tubes and Fittings, Metric Conversion Tables,

Section 14

HYDRAULIC SYSTEM

Contents

Page

Introduction (234,244 and 254 Tractors) ..........................•............... 14-2

Operating Principles (234 Tractors) ................................................ 14-3

Operating Principles (244 and 254 Tractors). . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . .. 14-6

Troubleshooting. . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14-9

Hydraulic Hitch Case (Cover) (234 Tractors) ...•.................................... 14-11

Hydraulic Hitch Case (Cover) (244 and 254 Tractors) .................................. 14-16

Hydraulic Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . .. 14-24

Testing the Hydraulic System ........................•........................... 14-27

Relief Valve Adjustment. . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . .. 14-30 234 Tractors ............................................................... 14-30 244/254 Tractors ........................................................... 14-30

Hitch Raise Control Rod Adjustment .............................................. 14-31 234 Tractors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14-31 244 and 254 Tractors ........................................................ 14-31

Drop Speed Control Valve Adjustment ............................................. 14-32

Control Valve Adjustment (244 and 254 Tractors) .................................... 14-33

Control Valve Fork Adjustment (244 and 254 Tractors) ......•......................... 14-34

Hydraulic Oil Filter ............................................................ 14-35 Removal (234 Tractors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14-35 Installation (234 Tractors) .................................................... 14-35 Removal and Installation (244/254 Tractors) ...................................... 14-35

14-1

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14-12

3. Remove the lift arms from the rockshaft. Note the rockshaft and hitch arms have timing marks for proper reassembly.

1. Rockshaft timing mark 2. Upper lift arm timing mark

4. Remove the set bolts and lockwashers from the top of the case securing the rockshaft bushings.

1. Set bolts and lockwashers

5. Remove the rockshaft, bushings, oil seals, bel/crank and piston connecting rod.

NOTE: Observe the position of the bushings. Wide end of bushings face inward.

1. Oil seals 2. Bushings 3. Bel/crank 4. Rockshaft 5. Wide end in 6. Connecting rod 7. Cotter pin