TM-9-2320-279-10-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
OPERATOR’S MANUAL VOLUME 1 OF 2
DECEMBER 1998
CHANGE 5
TM-9-2320-279-10-1 - Page 532 of 773
TM 9-2320-279-10- 1
Operation Under Unusual Conditions (Cont)
WARNIN G
Keep all personnel clear of area near winch cable when
tension is on cable. If winch cable breaks, it may cause
severe injury or death.
CAUTIO N
If winch does not move vehicle, stop using winch,
overheat damage may result.
(34)
Make sure recovery area is clear of personnel.
(35)
Set PTO ENGAGE switch (2) to ON.
(36)
Move winch shift lever (5) to IN until slack is out of cable.
(37)
Move winch shift lever (5) to center position.
CAUTIO N
Self-recovery winch is not designed to winch mired
vehicle by itself. Vehicle drive system power must
always be used with winch to self-recover vehicle or
damage to equipment may result.
(38)
Check that TRANSFER CASE shift lever (19) is set to LO.
(39)
Check that TRACTION CONTROL lever (20) is set to INTER-AXLE DIFF.
LOCK.
(40)
Press brake treadle (21).
(41)
Set transmission range selector (4) to R.
(42)
Release brake treadle (21).
(43)
Slightly press throttle treadle (22) and move winch shift lever (5) to IN.
NOT E
Keep winch cable tight at all times so cable does not get
tangled with vehicle.
(44)
Adjust position of throttle treadle (22) to change engine speed as
needed to keep winch cable (10) tight and vehicle moving.
(45)
When vehicle is on solid ground, set winch shift lever (5) to center
position.
(46)
Park vehicle (para 2-11o).
(47)
Set winch shift lever (5) to OUT and pay out winch cable (10) until all
tension is off cable.
(48)
When all tension is off winch cable (10), set winch shift lever (5) to
center position.
(49)
Set PTO ENGAGE switch (2) to OFF.
NOT E
If winch cable is connected to another vehicle, refer to
paragraph 2-43b for disconnecting procedures.
(50)
Disconnect winch cable (10) from heavy object.
(51)
If snatch block was used, disconnect end of winch cable (10) from
vehicle (para 2-43b). Remove snatch block from winch cable
(para 2-42b) and from tree, vehicle, or heavy object (FM 20-22).
2-41 5
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