7 M - 4 4 C L U T C H E S & M A N U A L T R A N S M IS S IO N S
MANUAL TRANSMISSION DIAGNOSIS CHART
CONDITION
PROBABLE CAUSE
CORRECTION
Slips out of High Gear
a. Transmission loose on clutch housing
b. Shift rods interfere with engine
mounts or clutch throw-out lever
c. Shift linkage does not work freely;
binds
d. Damaged mainshaft pilot bearing
e. Main drive gear retainer broken or
loose
f. Dirt between transmission case and
and clutch housing
g. Misalignment of transmission
h. Stiff shift lever seal
i. Pilot bearing loose in crankshaft
j. Worn or improperly adjusted linkage
a. Tighten mounting bolts
b. Replace or bend levers and rods to
eliminate interference
c. Adjust and free up shift linkage
d. Replace pilot bearing
e. Tighten or replace main drive gear
f. Clean mating surfaces
g. Refer to TRANSMISSION
ALIGNMENT
h. Replace seal
i. See Section 6 for brg. fits
j. Adjust or replace linkage as required
Noisy in All Gears
a. Insufficient lubricant
b. Worn countergear bearings
c. Worn or damaged main drive gear and
countergear
d. Damaged main drive gear or main
shaft bearings
e. Worn or damaged countergear anti
lash plate
a. Fill to correct level
b. Replace countergear bearings and shaft
c. Replace worn or damaged gears
d. Replace damaged bearings or main
drive gear
e. Replace countergear
Noisy in High Gear
a. Damaged main drive gear bearing
b. Damaged mainshaft bearing
c. Damaged high speed gear synchronizer
a. Replace damaged bearing
b. Replace damaged bearing
c. Replace synchronizer
Noisy in Neutral with Engine
Running
a. Damaged main drive gear bearing
b. Damaged or loose mainshaft pilot
bearing
c. Worn or damaged countergear anti
lash plate
d. Worn countergear bearings
a. Replace damaged bearing
b. Replace pilot bearings. See Section 6
for bearing fits
c. Replace countergear
d. Replace countergear bearings and shaft
Noisy in all Reduction Gears
a. Insufficient lubricant
b. Worn or damaged main drive gear or
countergear
a. Fill to correct level
b. Replace faulty or damaged gears
Noisy in Second Only
a. Damaged or worn second-speed
constant mesh gears
b. Worn or damaged countergear rear
bearings
c. Damaged or worn second-speed
synchronizer
a. Replace damaged gears
b. Replace countergear bearings and shaft
c. Replace synchronizer
Noisy in Third Only (Four
Speed)
a. Damaged or worn third-speed constant
mesh gears
b. Worn or damaged countergear bearings
a. Replace damaged gears
b. Replace damaged countergear bearings
and shaft
LIGHT DUTY TRUCK SERVICE MANUAL
Summary of Contents for Light Duty Truck 1973
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Page 53: ...HEATER AND AIR CONDITIONING 1A 27 LIGHT DUTY TRUCK SERVICE MANUAL...
Page 115: ...LIGHT DUTY TRUCK SERVICE M A N U A L HEATER AND AIR CONDITIONING 1A 89...
Page 123: ...BODY 1B 3 Fig 6 Typical 06 Van LIGHT DUTY TRUCK SERVICE MANUAL...
Page 149: ...BODY 1B 29 Fig 84 Body Mounting 06 Fig 85 Body Mounting 14 LIGHT DUTY TRUCK SERVICE MANUAL...
Page 171: ...LIGHT DUTY TRUCK SERVICE M A N U A L Fig 2 Frame Horizontal Checking Typical FRAME 2 3...
Page 173: ...LIGHT DUTY TRUCK SERVICE M A N U A L Fig 4 10 30 Series Truck Frame FRAME 2 5...
Page 174: ...2 6 FRAME LIGHT DUTY TRUCK SERVICE MANUAL Fig 5 Underbody Reference Points G Van...
Page 185: ...FRONT SUSPENSION 3 11 Fig 16 Toe out on Turns LIGHT DUTY TRUCK SERVICE MANUAL...
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Page 351: ...ENGINE 6 15 Fig ID Sectional View of Eight Cylinder Engine LIGHT DUTY TRUCK SERVICE MANUAL...
Page 375: ...EN G IN E 6 39 LIGHT DUTY TRUCK SERVICE MANUAL...
Page 376: ...6 4 0 ENGINE LIGHT DUTY TRUCK SERVICE MANUAL...
Page 377: ...ENG IN E 6 41 LIGHT DUTY TRUCK SERVICE MANUAL...
Page 378: ...LIGHT DUTY TRUCK SERVICE MANUAL Fig 37L K Series Engine Front Mount 6 42 ENG INE...
Page 400: ...6 6 4 ENG INE LIGHT DUTY TRUCK SERVICE MANUAL...
Page 401: ...ENG IN E 6 65 LIGHT DUTY TRUCK SERVICE MANUAL...
Page 402: ...6 6 6 ENGINE LIGHT DUTY TRUCK SERVICE MANUAL...
Page 403: ...E NG IN E 6 67 Fig 36V C Series Engine Mounts LIGHT DUTY TRUCK SERVICE MANUAL...
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Page 423: ...EN G IN E C OOLING 6K 13 Fig 16 Overheating Chart LIGHT DUTY TRUCK SERVICE MANUAL...
Page 424: ...6 K 1 4 ENG INE COOLING Fig 17 Coolant Loss Chart LIGHT DUTY TRUCK SERVICE MANUAL...
Page 456: ...6M 32 ENGINE FUEL Fig K15 Accelerator Controls G Van L 6 LIGHT DUTY TRUCK SERVICE MANUAL...
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Page 512: ...Fig 18e Vacuum Advance Diagram V8 Engine...
Page 516: ...6 T 2 4 E M IS S IO N CONTROL SYSTEMS LIGHT DUTY TRUCK SERVICE MANUAL...
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Page 593: ...CLUTCHES MANUAL TRANSMISSIONS 7M 3 LIGHT DUTY TRUCK SERVICE MANUAL...
Page 598: ...7M 8 CLUTCHES MANUAL TRANSMISSIONS LIGHT DUTY TRUCK SERVICE MANUAL...
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Page 743: ...FUEL TANKS AND EXHAUST 8 13 LIGHT DUTY TRUCK SERVICE MANUAL...
Page 744: ...8 14 FUEL TANKS AND EXHAUST LIGHT DUTY TRUCK SERVICE MANUAL...
Page 760: ...8 30 FUEL TANKS AND EXHAUST Fig 40 Exhaust Pipe P Models LIGHT DUTY TRUCK SERVICE MANUAL...
Page 761: ...FUEL TANKS AND EXHAUST 8 31 LIGHT DUTY TRUCK SERVICE MANUAL...
Page 763: ...FUEL TANKS AND EXHAUST 8 33 LIGHT DUTY TRUCK SERVICE MANUAL...
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Page 832: ...LIGHT DUTY TRUCK SERVICE MANUAL Fig 106 Power Steering Pump Mounting Typical 9 66 STEERING...
Page 833: ...PUMP ASSEMBLY STEERING GEAR TYPICAL SMALL V8 TYPICAL LARGE V8 STEERING 9 67...
Page 861: ...STEERING 9 95 Fig 134 Power Steering Pump Leakage LIGHT DUTY TRUCK SERVICE MANUAL...
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Page 886: ...11 10 CHASSIS SHEET METAL LIGHT DUTY TRUCK SERVICE MANUAL...
Page 891: ...ELECTRICAL BODY AND CHASSIS 12 5 LIGHT DUTY TRUCK SERVICE MANUAL...
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