TM 9-2350-287-10
TROUBLESHOOTING (Auxiliary Power Unit Engine) (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
23. APU ENGINE OVERHEATS
Step 1. Check air intake passage for obstruction.
Remove obstruction.
Step 2. Check crankcase oil level (Appendix E).
If low, fill (Appendix E).
If condition persists, notify Unit maintenance.
24. APU ENGINE MISFIRES
Step 1. Check air intake filter.
Clean or replace filter element (p. 3-44).
Step 2. Check for contaminants in fuel filters.
Drain filters (p. 3-44).
If condition persists, notify Unit maintenance.
25. APU ENGINE LACKS POWER
Step 1. Check air intake passage for obstruction.
Remove obstruction.
Step 2. Check for contaminants in fuel filters.
Drain filters (p. 3-44).
If condition persists, notify Unit maintenance.
HYDRAULIC SYSTEM
26. NO RESPONSE TO ANY CONTROL
Step 1. Check hydraulic fluid supply (Appendix E).
f low, fill reservoir (Appendix E).
Step 2. Check that ball valve in suction line is open.
If closed, open valve.
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