TM-9-2320-279-10-2
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
OPERATOR’S MANUAL VOLUME 2 OF 2
DECEMBER 1998
CHANGE 3
TM-9-2320-279-10-2 - Page 761 of 819
3-13.
3-13.
TM 9-2320-279-10-2
Troubleshooting Malfunctions (Cont)
Table 3-4. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
3.
4.
HEAVY-DUTY WINCH (M984E1) (CONT)
HEAVY-DUTY
WINCH WILL NOT OPERATE IN MANUAL
CONTROL.
Step 1. Check that all electrical switches are set in correct position
(para 2-65).
Step 2. Prepare to operate heavy-duty winch with remote control
(para 2-65).
Operate winch OUT and IN with remote control.
If cable will reel out, notify organizational maintenance.
WINCH CABLE WILL NOT REEL OUT OR IN OR OPERATES
SLOWLY IN MANUAL CONTROL.
Step 1. Prepare to operate heavy-duty winch with remote control
(para 2-65).
Operate winch OUT and IN with remote control.
If cable will reel out, notify organizational maintenance.
Step 2. Check outside temperature. If temperature is less than 0
o
F
(-17
o
C), hydraulic oil may not flow easily.
Operate engine for 20 minutes with PTO ENGAGE switch
set to ON to bring oil to operating temperature.
If oil is still not warmed, with crane in stowed position,
push MAST control lever down. Hold MAST control down
for approximately 30 seconds, then return to neutral
position. Repeat procedure several times until oil is
warmed.
If problem remains, notify organizational maintenance.
3-8
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