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TM 10-3930-636-24&P
Section III. POWER TRAIN MAINTENANCE
This section contains the information you’ll need to maintain the:
Transmission
Front and rear axles
It gives you instructions on how to troubleshoot problems, and
repair or replace the components that are within the scope of
direct support maintenance.
Para
Para
Troubleshooting Symptom Index . . . . . . . . . . . 3-16
Charging Pump Assembly . . . . . . . . . . . . . . . 3-19e
Transmission Troubleshooting . . . . . . . . . . . . . 3-17
Axles and Differential Carrier Assemblies
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 3-18
Transmission Maintenance . . . . . . . . . . . . . . . . . 3-19
Transmission Pressure Checks. . . . . . . . . . . 3-19a
Transmission Mounts . . . . . . . . . . . . . . . . . . 3-19b
Transmission Removal . . . . . . . . . . . . . . . . . 3-19c
Control Valve and Modulation Valve
Assemblies . . . . . . . . . . . . . . . . . . . . . . . . 3-19d
Transmission Oil Cooler . . . . . . . . . . . . . . . . 3-19f
Axles and Differential Carrier Assemblies
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Front Axle Assembly . . . . . . . . . . . . . . . . . . 3-20a
Rear Axle Assembly . . . . . . . . . . . . . . . . . . . 3-20b
Front Axle Differential Carrier
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 3-20c
Rear Axle Differential Carrier
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 3-20d
3-16. TROUBLESHOOTING SYMPTOM INDEX
Para/Malfunction Page
TRANSMISSION TROUBLESHOOTING
High transmission oil temperature.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-17/1
3-123
Loss of drive in all ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-17/2
3-123
Loss of power and/or loss of drive in any one range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-17/3
3-124
AXLES AND DIFFERENTIAL CARRIER ASSEMBLIES TROUBLESHOOTING
Continuous axle or wheel noise... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-18/1
3-125
Lubricant leaking from differential carrier assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-18/2
3-125
3 - 1 7 . T R A N S M I S S I O N T R O U B L E S H O O T I NG
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. HIGH TRANSMISSION OIL TEMPERATURE
Check transmission lube pressure at lube pressure port (para 3-19a, steps 6 through 8).
a. If lube pressure is low, replace charging pump assembly (para 3-19e).
b. If lube pressure is normal, replace transmission (para 3-19c) (torque converter oil sealing
rings worn and require replacement) and notify general support maintenance.
2. LOSS OF DRIVE IN ALL RANGES
Step 1. Perform step 5 of paragraph 2-36, MALFUNCTION 4.
Replace control valve assembly (para 3-19d); if replacement of control valve does not help,
proceed to step 2 below.
3-123
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