TM-9-2350-256-10
RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
OPERATOR'S MANUAL
OCTOBER 2014
TM-9-2350-256-10 - Page 85 of 796
DESCRIPTION AND USE OF OPERATOR'S CONTROLS AND INDICATORS - Continued
Figure 8.
APU Control Box.
Table 8.
APU Control Box Controls and Indicators.
ITEM
CONTROL/INDICATOR
FUNCTION
1
APU FUEL SHUTOFF switch
Shuts off fuel supply to APU.
2
APU PREHEAT switch
Turns on preheating units in APU and supplies power to start
switch.
3
APU ENGINE OIL PRESSURE
gauge
Indicates APU engine oil pressure in psi. Normal operating range is
25 to 36 psi (172 to 248 kPa).
4
APU HIGH AIR TEMP indicator
Red lamp lights when APU overheats.
5
APU LOW OIL PRESS indicator
Lights red when APU engine oil pressure drops below 14 psi
(96 kPa).
6
APU START switch
Used with preheat switch to start the APU.
7
APU GEN switch
Turns APU generator ON or OFF.
TM 9-2350-256-10
0004
0004-11
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