TM 9-6115-664-13&P
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
2-10. OPERATION IN UNUSUAL WEATHER.
a.
If unit is to be operated at ambient temperature below 0 F (-18 C) for an extended period, change engine oil to
MIL-L-46167, 5W-30. Refer to Appendix F for oil servicing.
b.
If ambient temperature is below 32 F (0 C) , the PREHEAT OIL / AIR switch (item 2, Figure 2-2 or item 10,
Figure 2-3) should be used prior to starting the engine. Perform the following procedures:
(1)
The PREHEAT OIL / AIR switch is a three-position switch, spring-loaded to the off position. Moving the
switch to the OIL (up) position energizes a glow plug located in the engine oil reservoir. Moving the switch
to the AIR (down) position energizes two glow plugs located in the engine intake manifold. The heater
elements (oil or air) will remain on for as long as the switch is held in the OIL or AIR position.
(2)
Start the APU in accordance with paragraph 2-8.
c.
When operating the APU in extremely dusty or sandy conditions, the engine air filter element and air intake ducts
must be inspected frequently to ensure that clogging or obstruction has not occurred.
2-11. EMERGENCY PROCEDURES.
WARNING
APU battle short mode is for emergency operation only. Prolonged use under this
mode could damage the APU or pose potential injury hazards to personnel.
a.
The APU is capable of operation with a system fault. The BATTLE SHORT switch (8, Figure 2-3) located on the
remote control panel allows the APU to override anticipated system faults to continue operation.
b.
To operate the APU in battle short mode, lift protective cover and place BATTLE SHORT switch (8) in the ON
position. The battle short ON indicating light (9) will illuminate to indicate battle short mode.
2-12. NUCLEAR, BIOLOGICAL, AND CHEMICAL (NBC) DECONTAMINATION PROCEDURES.
Refer to the vehicle maintenance manual, TM 9-2350-277-10, for NBC decontamination procedures.
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