PDF Repair Manual New Holland MC22 MC28 MC35 Commercial Mower - 4 MB
Keep your New Holland commercial mowers running in top condition with this detailed repair manual.
It covers the MC22, MC28, and MC35 models, offering complete instructions for maintenance and repair tasks.
From engine diagnostics to hydraulic system troubleshooting, this guide is an essential tool for any technician or owner.
The manual contains clear diagrams and specifications to assist you with every step of the process.
This PDF ensures you have the correct procedures to perform repairs accurately and efficiently.
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--- Page 1 ---
MC22, MX28, MC35
REPAIR MANUAL
COMPLETE CONTENTS
SECTION 00 - GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SECTION 10 - ENGINE AND FUEL SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SECTION 25 - FOUR WHEEL DRIVE REAR AXLE . . . . . . . . . . . . . . . . . . . . . . 13
SECTION 27 - DIFFERENTIAL, AXLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SECTION 29 - HYDROSTATIC DRIVE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . 15
SECTION 31 - POWER TAKE-OFF (PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SECTION 33 - BRAKES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
SECTION 35 - HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
SECTION 41 - STEERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SECTION 44 - TWO WHEEL DRIVE REAR AXLE . . . . . . . . . . . . . . . . . . . . . . . 26
SECTION 55 - ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SECTION 90 - PLATFORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
The following pages are the collation of the contents pages from each section and
chapter of the MC22, MC28, and MC35 Repair manual. Complete Repair part # 87557971.
The sections used through out all New Holland product Repair manuals may not be
used for each product. Each Repair manual will be made up of one or several books.
Each book will be labeled as to which sections are in the overall Repair manual and
which sections are in each book.
The sections listed above are the sections utilized for the MC22, MC28, and MC35
Tractors.
© 2006 CNH America LLC 87557976 6/06
Printed In U.S.A.
--- Page 3 ---
SECTION 10 -- ENGINE AND FUEL SYSTEMS
BOOK 1 - 87557972
Chapter 2 -- Fuel Systems (Continued)
CONTENTS
Section Description Page
10 230 Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Governor Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
10 218 Description and Operation -- Fuel Injectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Fuel Filter and Shutoff Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Troubleshooting -- Fuel Injectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
10 218 Injectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Assembly and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Description of Operation -- Engine Breather Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Engine Breather Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Troubleshooting -- Engine Breather Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
11
--- Page 4 ---
SECTION 41 -- STEERING
BOOK 3 - 87557974
Chapter 1 -- Steering (Continued)
CONTENTS
Section Description Page
Description of Operation -- Oil Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
41 200 Oil Flow – Neutral Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Oil Flow – Left Turn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Oil Flow – Right Turn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Oil Flow – Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pressure Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Steering System Relief Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
41 216 Steering Cylinder Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Overhaul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
41 204 Power Steering Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
41 216 Steering Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
41 101 Steering Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
21
--- Page 5 ---
SECTION 55 - ELECTRICAL
BOOK 4 - 87557975
Chapter 4 - Charging and Starting Systems (Continued)
CONTENTS
Section Description Page
Brush Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Starter Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Starter Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Pinion Position Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Starter Motor No Load Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Starter Motor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Starting System for MC35 Tractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Description and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Starter Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Starter Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Pinion Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Starter Motor Specifications -- MC35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Starter Motor Troubleshooting -- MC35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Pinion Shaft Fails to Advance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Pinion Motor Rotates but No Rotation Transmitted to Engine . . . . . . . . . . . . . . . . 108
Motor Rotates before Pinion Meshes with Ring Gear . . . . . . . . . . . . . . . . . . . . . . 108
Pinion Meshes with Ring Gear But Starting Motor Fails to Turn . . . . . . . . . . . . . . 109
Motor Fails to Stop After Engine Starts and Key Switch is Turned Off . . . . . . . . 109
Starter Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Starter Motor Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Starter Motor Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Starter Motor Electrical Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Armature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Brush Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Field Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Starter Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Starter Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Starter Motor No Load Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Starter Motor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
31
--- Page 6 ---
SECTION 00 -- GENERAL INFORMATION -- CHAPTER 1
OPERATING THE MOWER DECK 17. Do not drive the machine on streets or highways.
Watch for traffic when you cross roads or operate
1. Release the Commercial Mower HST foot pedal, near roads.
apply the parking brake, place PTO lever in the
“OFF” position, the lift control lever in neutral 18. Look to the rear before and when backing. You
position and the transmission in neutral before must disengage blades before shifting into re-
starting the engine. verse. Make sure that the area immediately be-
hind you is clear of obstructions or holes and
2. Do not start the engine or operate controls while small children. Use extra caution when the ma-
standing beside the unit. Always sit in the seat chine is equipped with a grass catcher.
when starting the engine or operating controls.
19. Do not cross gravel roads with the PTO engaged.
3. Do not bypass the neutral safety start switch.
Consult your New Holland Dealer if your neutral 20. Do not operate the mower deck without locking
safety start controls malfunction. the hood and seat.
4. Use jumper cables only in the recommended 21. Disengage power to the mower deck when trans-
manner. Improper use can result in the unit run- porting or when not in use.
ning away. 22. Disengage power to the mower deck before
5. Avoid accidental contact with the gear shift lever backing up. Do not mow in reverse unless abso-
while the engine is running. lutely necessary and then only after careful ob-
servation of the entire area behind the mower
6. Do not get off the Commercial Mower while it is deck.
in motion.
23. When mowing proceed as follows:
7. Disengage the PTO, shut off the engine and ap-
ply the parking brake before getting off the unit. a. Mow only in daylight or in good artificial light.
8. Do not park the Commercial Mower on a steep b. Never make a cutting height adjustment
incline. while the engine is running if the operator
must dismount to do so.
9. Do not operate the engine in an enclosed build-
ing without adequate ventilation. Exhaust fumes c. Check the blade mounting bolts for proper
can cause death. tightness at frequent intervals.
10. If the engine operates erratically, stop the engine d. Shut off the engine when removing the grass
immediately. catcher or clearing the chute.
11. Do not leave equipment in the raised position. 24. Watch for holes in the terrain and other hidden
12. Do not operate the Commercial Mower or any at- hazards.
tachments while under the influence of alcohol, 25. Do not stop or start suddenly when going uphill
medication, controlled substances or when tired. or downhill. Mow up and down the face of steep
13. Do not operate near ditches, holes, embank- slopes, never cross the face.
ments or any other terrain which may collapse 26. Disengage power to attachment(s) and stop the
under machine weight. The risk of machine tip- engine before leaving the operators position.
over increases when the ground is loose or wet.
27. Never leave equipment in the raised position.
14. When working in cooperation with other opera-
tors, always let others know what you are doing 28. Always keep the discharge side of the cutter di-
ahead of time. rected away from people and objects which could
be struck by debris thrown from the cutter.
15. Never try to mount or dismount from a moving
unit. 29. Install Commercial Mower weights to increase
stability when operating on slopes.
16. Do not operate the Commercial Mower with bare
feet. Keep hands, feet and clothing away from
power-driven parts.
00-7
--- Page 7 ---
SECTION 00 -- GENERAL INFORMATION -- CHAPTER 1
INTERNATIONAL SYMBOLS
As a guide to the operation of your Commercial Mower, various universal symbols have been utilized on the
instruments and controls. The symbols are depicted and described below.
Hours Recorded Neutral Battery
Engine Water Diesel Fuel Power Take-Off
Temperature
(ON)
Air Filter Glow Plugs Power Take-Off
(OFF)
Engine Oil “Tortoise” -- Slow
Pressure Engine Stop
or Minimum Setting
Full Time 4WD Engine Oil “Hare” -- FAST
or Maximum Setting
Auto 4WD Engine Start Warning
Continuously
Variable Parking Brake Control Lever
Hold
Increase
Lock Rock Shaft
(Raised)
Decrease
Rock Shaft
Lock Release (Lowered)
Fuel Level
Remote Cylinder
High Range Differential Lock (Retracted)
Remote Cylinder
Volume Empty (Extended)
Low Range
Volume Full
00-17
--- Page 8 ---
SECTION 00 -- GENERAL INFORMATION -- CHAPTER 1
SPECIAL TOOLS
Bore Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-25 mm (0.75 -- 1.0 in.)
Compression Test Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH00120
Cylinder Bore Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-51 mm (1-2 in.)
Cylinder Bore Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-76 mm (2-3 in.)
Dial Indicator (Magnetic Base) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH01345
Gauge, 0-138 bar (0-2000 psi) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH02504
HST High Pressure Relief Valve Test Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NH01410
HST Charge Pressure Relief Valve Test Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NH01411
Injector Adapter Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH01728
Injector Nozzle Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH01721
Micrometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-25 mm (0-1 in.)
Micrometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-51 mm (1-2 in.)
Micrometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-76 mm (2-3 in.)
Oil Pressure Test Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH00011
Oil Pump Port Block Installer Tool (MC22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH11063A
Oil Pump Port Block Installer Tool (MC28 & MC35) . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH00117
Oil Pump Port Block Removal Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH11097
Power-steering test fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NH01412
PTO Clutch Spring Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NH01413
*Steering Motor Return Spring Installation Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manufacture
Transaxle Alignment Rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NH01414
Transaxle range fork Detent Ball Installation Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FNH01580
*Refer to figure below for tool manufacturing instructions.
1/4″
SQUARE KEYSTOCK
1-1/2″ 1/4″
9/64″
6″
00-27
--- Page 9 ---
SECTION 10 -- ENGINE AND FUEL SYSTEMS -- CHAPTER 1
CYLINDER HEAD SPECIFICATIONS
Tractor Model MC22 MC28 MC35
Engine Model S773 J843 N843L
Head Warp
Standard 0.05 mm (0.002 in.) 0.05 mm (0.002 in.) 0.05 mm (0.002 in.)
Maximum 0.12 mm (0.005 in.) 0.12 mm (0.005 in.) 0.12 mm (0.005 in.)
Valve Seat Width
Standard 1.7 -- 2.1 mm 1.7 -- 2.1 mm 1.7 -- 2.1 mm
(0.067 -- 0.082 in.) (0.067 -- 0.082 in.) (0.067 -- 0.082 in.)
Maximum 2.5 mm (0.098 in.) 2.5 mm (0.098 in.) 2.5 mm (0.098 in.)
Valve Seat Sink
(Recess)
Standard 0.85 -- 1.15 mm 0.85 -- 1.15 mm 0.85 -- 1.15 mm
(0.0334 -- 0.0453 in.) (0.0334 -- 0.0453 in.) (0.0334 -- 0.0453 in.)
Maximum 1.8 mm (0.0708 in.) 1.8 mm (0.0708 in.) 1.8 mm (0.0708 in.)
Valve Angle 45° 45° 45°
PISTON SPECIFICATIONS
Tractor Model MC22 MC28 MC35
Engine Model S773 J843 N843L
Piston Diameter
Standard 76.933 -- 76.948 mm 83.948 -- 83.963 mm 83.948 -- 83.963 mm
(3.02889 -- 3.02942 in.) (3.30503 -- 3.30562 in.) (3.30503 -- 3.30562 in.)
Minimum 76.700 mm (3.0197 in.) 83.7 mm (3.2953 in.) 83.7 mm (3.2953 in.)
Bore Clearance
Standard 0.0525 -- 0.0815 mm 0.088 -- 0.106 mm 0.088 -- 0.106 mm
(0.0021 -- 0.0032 in.) (0.0034 -- 0.0041 in.) (0.0034 -- 0.0041 in.)0.30
Maximum 0.25 mm (0.010in.) 0.30 mm (0.0118in.) mm (0.0118in.)
Piston Wrist Pin Bore
Standard 20.988 -- 21.002 mm 24.999 -- 25.003 mm 27.996 -- 28.000 mm
(0.8267 -- 0.8268 in.) (0.984 -- 0.9843 in.) (1.102 -- 1.1023 in.)
Maximum 21.016 mm (0.827 in.) 25.014 mm (0.984 in.) 27.98 mm (1.102 in.)
Piston Pin Clear-
ance ±0.004 mm (0.00015 in.) --0.001 -- +0.007 mm --0.001 -- +0.007 mm
Standard (--0.000393 -- + 0.0002 in.) (--0.000393 -- + 0.0002 in.)
0.02 mm (0.0008 in.) 0.02 mm (0.0008 in.) 0.02 mm (0.0008 in.)
Maximum
Available Oversizes 0.5 mm (0.02 in.) 0.5 mm and 1.0 mm 0.5 mm and 1.0 mm
(Non-emissionized) (0.020 and 0.040 in.) (0.020 and 0.040 in.)
10-7
--- Page 10 ---
SECTION 10 -- ENGINE AND FUEL SYSTEMS -- CHAPTER 1
METRIC BOLT TORQUE SPECIFICATIONS -- ALL MODELS
Coarse Thread Fine Thread
Bolt Pitch Foot-- Newton Pitch Foot-- Newton--
Grade
Size No. (mm) Pounds Meters (mm) Pounds Meters
4T, 4.8 3.6--4.3 4.9--6.9
M6 7T, 8T, 8.8 1.0 6.1--8.3 8.3--11.3 ------------ ------------ ------------
10T, 11T 8.7--11.5 11.7--15.7
4T, 4.8 9.4--12.3 12.7--16.7 11.2--14.8 15.2--20.1
M8 7T, 8T, 8.8 1.25 16.6--21 22.6--28.4 1.0 26.8--25.3 26.5--34.3
10T, 11T 21--26.7 28.5--36.3 22.4--29.6 30.4--40.2
4T, 4.8 18.8--24.6 25.5--33.3 21--26.7 28.4--36.2
M10 7T, 8T, 8.8 1.5 32.5--41.2 44.1--55.9 1.25 36.2--46.3 49--62.7
10T, 11T 39.8--51.3 54--69.6 42.7--54.2 57.8--73.5
4T, 4.8 27.4--34.7 37.3--47 31.8--40.5 43.1--54.9
M12 7T, 8T, 8.8 1.75 48.5--61.5 65.7--83.3 1.25 55--69.4 74.5--94.1
10T, 11T 68--85.3 92--116 73--93.3 99--126
4T, 4.8 46.3--59.3 62.8--80.4 51.4--64.3 69.6--87.2
M14 7T, 8T, 8.8 2.0 76.7--96.9 104--132 1.5 86.1--109 117--148
10T, 11T 103--128 139--175 110--136 149--184
4T, 4.8 64--81 86.1--110 67.3--84.6 91.1--114
M16 7T, 8T, 8.8 2.0 110--136 149--185 1.5 116--142 157--192
10T, 11T 152--188 205--255 163--190 221--269
4T, 4.8 84--104 113--141 97--120 132--162
M18 7T, 8T, 8.8 2.0 145--173 196--236 1.5 170--206 231--279
10T, 11T 203--246 275--333 221--271 298--367
4T, 4.8 107--132 144--180 127--155 172--210
M20 7T, 8T, 8.8 2.5 178--213 240--290 1.5 203--246 275--333
10T, 11T 268--325 363--441 293--358 397--485
10-17
--- Page 11 ---
SECTION 10 -- ENGINE AND FUEL SYSTEMS -- CHAPTER 1
PROBLEM POSSIBLE CAUSE CORRECTION
Oil pressure warning light Bulb burnt out Replace the bulb
fails to operate
Oil pressure sensor is faulty Replace oil pressure sensor
Warning light circuit faulty Replace warning light circuit
Engine knocks Diluted or thin oil Change engine oil and filter
Insufficient oil supply Check engine oil level
Low oil pressure Inspect lube system for restrictions
Worn crankshaft thrust bearing Replace relief valve
Excessive flywheel runout Replace thrust bearing
Excessive connecting rod or main Replace flywheel
bearing clearance Replace bearings
Seized bearing Replace bearing and affected
component if necessary
Clogged oil passage Clean out oil passages
Bent or twisted connecting rod Replace connecting rod
Crankshaft journals out of round Rework or replace crankshaft
Excessive piston to cylinder bore Replace piston with correct oversized
clearance piston
Excessive piston ring side clearance Replace piston rings
Broken or damaged ring Replace piston ring
Excessive piston pin clearance Replace piston pin or bushing
Seized piston Replace piston and, if necessary,
engine block
Piston pin retainer loose or missing Replace retainer
Improper valve lash adjustment Adjust valve lash to specification
Worn valve lifter Replace valve lifter
Excessive timing gear backlash Replace all timing gears
Excessive oil consumption Engine oil level too high Remove excess oil
Leakage in cylinder head gasket Replace head gasket
Oil loss past the pistons and rings Replace piston rings
Worn, broken, or sticking piston rings Replace piston rings
Cl
Clogged
d return
t hole