TM-9-2320-280-34
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1996
TM-9-2320-280-34 - Page 858 of 1258
1 7 - 1 5 . TORQUE CONVERTER MAINTENANCE (4L80-E)
This task covers:
a.
Cleaning
b.
Inspection
a. Cleaning
NOT E
Have drainage container ready to catch fluid.
1.
Drain fluid from torque converter (1). Replace torque converter (1) if fluid is contaminated or
abnormal looseness or noises were recorded at torque converter removal (para. 17-14a).
2.
Clean exterior of torque converter (1) in accordance with para. 2-13.
INITIAL SETUP:
Applicable Models
M997A2, M1025A2, M1035A2,
M1043A2, M1045A2, M1097A2, M1123
Manual References
TM 9-2320-280-24P
Equipment Condition
Transmission disassembled into subassemblies
(para. 17-14).
Maintenance Level
General support
b. Inspection
NOT E
For general inspection instructions, refer to para. 2-14.
1.
Inspect torque converter hub (2) for damage. Replace torque converter (1) if hub (2) is damaged.
2.
Inspect torque converter (1) for proper operation by manually rotating splined inner race (3) in both
directions. The splined inner race (3) should turn freely in clockwise direction, but not turn or be
very difficult to turn, in counterclockwise direction. Replace torque converter (1) if it does not
operate properly.
3.
Inspect torque converter (1) for damaged or leaking seams and welds. Replace torque converter (1) if
damaged.
4.
Inspect torque converter pilot (5) for damage. Replace torque converter (1) if damaged.
5.
Inspect threaded holes (4) for damage. Repair with thread repair inserts. If unable to repair
threaded holes (4), replace torque converter (1).
TM 9-2320-280-34
1 7 - 7 8
Change 1
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