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 488 of 773
TM 9-2320-279-10- 1
Auxiliary Equipment Operation (Cont)
2-31. AUXILIARY EQUIPMENT OPERATING PROCEDURES (CONT) .
h. Operate Machine Gun Mount.
Refer to TM 9-1005-245-14 for
operating instructions.
i. Operate M-8 Chemical Alarm.
Refer to TM 3-6665-225-12 for
operating instructions.
j. Operate M-13 Decontamination Unit.
Refer to TM 3-4230-214-12&P
for operating instructions.
k. Operate Radio.
Refer to TM 11-5820-498-12 for operating instructions.
l. Operate Generator Set.
Refer to TM 5-6115-465-12 for operating
instructions.
Section IV. OPERATION UNDER UNUSUAL CONDITION S
2-32. OPERATE VEHICLE IN EXTREME HEAT.
CAUTIO N
●
When operating vehicle in very hot temperatures of
above 100° F (38°C), extra care must be taken to
prevent overheating engine (temperatures over
230°F, 110°C) and transmission (temperatures over
250°F, 121°C). Watch water and transmission
temperature gages closely.
●
Check oil levels often and keep operating strain as
low as possible. Vehicle cooling and lubrication
systems support each other. Failure of one system
will rapidly cause failure of other system.
a.
Keep operating strain as low as possible.
(1)
Put transmission in N (neutral) position while engine is running. Let
engine idle for about 2 minutes before shutting down. Idling will cool
engine faster than quick shutdown and may prevent damage from
remaining engine heat.
(2)
Use low gear ranges only when necessary.
b.
Stop vehicle for cooling off periods, and idle engine as often as possible.
c.
Check oil levels often. Oil seals are more likely to leak in extreme hot
weather.
2-37 4
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