TM 9-2330-381-14
Table 3-1. Operator/Crew Troubleshooting Table
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
APU
1.
ENGINE DOES NOT CRANK OVER
Step 1.
Check starter and battery connections for looseness or corrosion.
Tighten battery connections (table 2-1, item 6, step e).
If connection are corroded, notify unit
maintenance.
Step 2.
Check fluid level in battery.
If fluid level is low, notify unit maintenance.
Step 3.
Turn starter switch to START and listen for starter to engage.
If starter does not engage or appears to be defective, or if the above steps do not correct malfunction,
notify unit maintenance.
2.
ENGINE CRANKS BUT DOES NOT START
Step 1.
Check fuel level in fuel tank (para. 3-3).
Add proper grade of fuel to fuel tank.
Step 2.
Check for fuel in fuel filter (para. 2-3, item 3).
Turn fuel petcock to open position (para. 2-3, item 2).
Step 3.
Check for loose jet start cock on air intake manifold.
Tighten thumbscrew on jet start cock (para. 2-3, item 7).
Step 4.
Visually check fuel sediment bowl for contaminates.
If fuel is contaminated, notify unit maintenance.
3.
ENGINE RUNS ROUGH
Step 1.
Check fuel level in fuel tank.
Add proper grade of fuel to fuel tank (para. 3-3).
Step 2.
Check for fuel in fuel filter.
Turn fuel petcock to open position (para. 2-3, item 2).
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