TM-9-2320-283-20-1

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3

DECEMBER 1983

TM-9-2320-283-20-1 - Page 418 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-11. TROUBLESHOOTING PROCEDURES (Continued)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

TRANSMISSION

91.

TRANSMISSION SHIFTS AT TOO HIGH A SPEED.

Step 1.

Check adjustment of modulator linkage.

Adjust modulator linkage (para 3-140).

Step 2.

Notify direct support maintenance.

92.

TRANSMISSION SHIFTS AT TOO LOW A SPEED.

Step 1.

Check adjustment of modulator linkage.

Adjust modulator linkage (para 3-140).

Step 2.

Notify direct support maintenance.

93.

TRANSMISSION OVERHEATING IN ALL RANGES.

Step 1.

Check oil level.

a.

Oil level low; add oil (para 3-135).

b.

Oil level high; drain oil to proper level (para 3-135).

Step 2.

Notify direct support maintenance.

94.

NO RESPONSE TO SHIFT LEVER MOVEMENT.

Step 1.

Check oil level.

Oil level low; add oil (para 3-135).

Step 2.

Check for disconnected or damaged shifter control cable.

a.

Connect or replace shifter control cable (para 3-138).

b.

Notify direct support maintenance.

2-292