Section VI. POWER TRAIN MAINTENANCE

TM 10-3930-636-24&P

Section VI. POWER TRAIN MAINTENANCE

This section contains the information you'll need to maintain the:

Transmission

Drive shaft assemblies and universal joints

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 organizational

maintenance.

Para

Transmission Hoses. Lines and Fittings . . . . . . . . 2-38f

Troubleshooting Symptom Index . . . . . . . . . . . . . . 2-35

Transmission Oil Cooler . . . . . . . . . . . . . . . . . . . 2-38g

Transmission Troubleshooting . . . . . . . . . . . . . . . . . 2-36

Axles and Drive Shaft Assemblies Maintenance . . . . 2-39

Axles and Drive Shaft Assemblies Troubleshooting . 2-37

Front Drive Shaft Assembly and Support Bearing . 2-39a

Transmission Maintenance . . . . . . . . . . . . . . . . . . 2-38

Center Drive Shaft Assembly . . . . . . . . . . . . . . . 2-39b

Transmission Servicing and Inspection . . . . . . . . 2-38a

Rear Drive Shaft Assembly . . . . . . . . . . . . . . . . . 2-39c

Transmission Linkage Controls . . . . . . . . . . . . . 2-38b

Front and Rear Axle Assemblies . . . . . . . . . . . . . 2-39d

Axle Disconnect Lever . . . . . . . . . . . . . . . . . . . . 2-38c

Axle Breathers . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39e

Dipstick Tube Assembly . . . . . . . . . . . . . . . . . . . 2-38d

Front and Rear Axle Shafts and Bearings . . . . . . 2-39f

Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38e

2-35. TROUBLESHOOTING SYMPTOM INDEX

Para/Malfunction Page

TRANSMISSION

2-194

2-36/1

Foamy Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-36/2

2-195

Slow or erratic transmission shifting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-36/3

2-196

High transmission oil temperature.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-36/4

2-197

Loss of drive in all ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-198

2-36/5

Loss of power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AXLES AND DRIVE SHAFT ASSEMBLES

2-199

2-37/1

Lubricant leaking from differential breather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-199

2-37/2

Continuous axle or wheel noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-200

2-37/3

Differential carrier assembly overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-200

2-37/4

Lubricant leaking from differential carrier assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-200

2-37/5

Excessive noise or vibration in drive shaft assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 - 3 6 . TRANSMISSION TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. FOAMY OIL

Step 1.

Check oil level with transmission at operating temperature and engine operating.

a. If oil level is not between FULL and ADD marks, add oil (refer to current lubrication order).

b. If oil level is between FULL and ADD marks, proceed to step 2.

Step 2. Check source of oil and ensure that oil is correct grade and type.

a. If oil is not correct grade and type, drain oil, replace oil filter, and add new oil (para 2-38a)

(refer to current lubrication order).

b. If oil is correct grade and type, proceed to step 3.

2-194