TM-9-2350-256-10
RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
OPERATOR'S MANUAL
OCTOBER 2014
TM-9-2350-256-10 - Page 449 of 796
AUXILIARY POWER UNIT (APU) TROUBLESHOOTING
INITIAL SETUP:
Tools and Special Tools
General mechanic's tool kit
(WP 0135, Table 1, Item 2)
Wire brush (WP 0135, Table 1, Item 1)
Materials/Parts
Wiping rags Qty: AR (WP 0134, Table 1, Item 57)
Personnel Required
Crewman (3)
References
Auxiliary Power Unit (APU) air cleaner
maintenance (WP 0120)
References (cont.)
Auxiliary Power Unit (APU) operation in all
conditions (WP 0042)
Description and use of operator's controls and
indicators (WP 0004)
Engine deck grilles operation (WP 0030)
Preventive Maintenance Checks and Services
(PMCS) – after, including lubrication
instructions (WP 0098)
Fueling (WP 0117)
Slave starting main engine (WP 0056)
Voltage regulator reset (WP 0118)
WARNING
•
Throughout troubleshooting of the electrical system or electrical components, be
certain vehicle MASTER switch (WP 0004) is off between every step unless
otherwise directed. Failure to comply may result in personnel death or injury.
•
Remove any rings, bracelets, wristwatches, and neck chains before working on
any vehicle. Jewelry can catch on equipment and cause injury, or may short
across electrical circuit and cause severe burns or electrical shock. Failure to
comply may result in personnel death or injury.
TROUBLESHOOTING PROCEDURE
AUXILIARY POWER UNIT (APU) FAILS TO START
SYMPTOM
Auxiliary Power Unit (APU) fails to start.
MALFUNCTION
The APU GEN switch is in the wrong position.
CORRECTIVE ACTION
1.
Check the APU GEN switch position.
TM 9-2350-256-10
0083
0083-1
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