TM-9-2320-279-34-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS DIRECT SUPPORT AND GENERAL SUPPORT, VOLUME 1 OF 3
TM-9-2320-279-34-1 - Page 44 of 709
TM 9-2320-279-34- 1
Troubleshooting Malfunctions (Cont)
2-7. TROUBLESHOOTING INSTRUCTIONS (CONT) .
Table 2-3. Troubleshooting (Cont )
Malfunction
Test or Inspection
Corrective Action
TRANSMISSION (CONT )
3. TRANSMISSION WILL NOT SHIFT INTO GEAR, SLIPS OUT OF GEAR, OR OPERATE S
ERRATICALLY (CONT) .
Step 4. Remove oil pan (para 7-11). Manually shift transmission and see if manual shaft and detent
lever engage selector valve and that actuator pin is attached to detent lever.
If selector valve does not engage detent lever, repair or replace defective parts
(para 7-20).
If selector valve engages detent lever, disassemble transmission and valve body to
check for worn clutch packs in transmission, loose valve body screws, and sticking
valves in valve body (paras 7-10, 7-15, 7-17, 7-18, 7-19).
4. OIL LEAKING AT CONVERTER HOUSING .
2-16
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