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 65 of 773
TM 9-2320-279-10-1
Controls and Indicators (Cont)
2-2.
LOCATION AND USE OF CONTROLS AND INDICATORS (CONT).
Key
11
12
13
14
Air Filter Restriction Indicator
15
TRACTION CONTROL
16
ETHER START Control
Figure 2-5.
Instrument Panel Controls and Indicators (Sheet 2 of 3).
Control or Indicator
OIL-WATER Indicator
INTER-AXLE DIFF. LOCK
Indicator
8X8 DRIVE Indicator
Function
Lights (red) when engine oil pressure is too low
or when engine coolant temperature is too high.
Buzzer sounds at the same time.
Lights (red) when TRACTION CONTROL is in
INTER-AXLES DIFF. LOCK position.
Lights (orange) when TRACTION CONTROL is
in 8X8 DRIVE position or when TRANSFER
CASE is in LO.
Shows condition of air cleaner filter. Indicator
window shows yellow when filter is clean and
red when filter becomes clogged. VACUUM
INCHES H
2
O window shows degree of
restriction.
In left position (INTER-AXLE DIFF. LOCK)
locks interaxle differentials in front and rear
tandems. In right position (8X8 DRIVE),
engages transfer case drive to front axle.
Injects ether into engine intake manifold for
cold weather starting.
2-8
Change 5
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