TM-9-2320-273-34
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1980
TM-9-2320-273-34 - Page 27 of 801
TM 9-2320-273-34
Table 2-6. M915 Rear Axle Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
EXCESSIVE PLAY (BACKLASH).
Step 1.
Check differential bearing adjustment.
a.
Remove differential carrier. (Refer to para 11-4 for forward rear axle or para
11-14 for rear rear axle.)
b.
Adjust bearing (para 11-9e or 11-17i, as applicable).
Step 2.
Check for damaged or worn differential.
Replace differential (para 11-5 through 11-10, or 11-15 through 11-18, as applicable),
2.
EXCESSIVE NOISE.
Step 1.
Check for damaged or worn pinion bearings.
a.
Remove differential carrier. (Refer to para 11-4 for forward rear axle or para
11-14 for rear rear axle.)
b.
Replace defective bearings (para 11-5 through 11-10, or para 11-15 through
11-18, as applicable).
Step 2.
Check for damaged or worn side carrier bearings.
Replace defective bearings (para 11-5 through 11-9., or para 11-15 through 11-18, as
applicable).
Step 3.
Check for damaged or worn spider gears.
Replace defective gears (para 11-5 through 11-9, or para 11-15 through 11-18, as
applicable).
Step 4.
Check for damaged or worn ring and pinion gears.
Replace defective gear set (para 11-5 through 11-9, or para 11-15 through 11-18, as
applicable).
2-11
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