TM 5-4310-452-14
Table 3-1. Operator Troubleshooting Procedures (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. Ensure that compressor unit is level,
Adjust compressor unit to within 15° of level end-to-end (see paragraph 2-12).
6. ENGINE RUNS BACKWARD WHEN TURNED OFF.
Check engine idle speed on TACH/HOURMETER gage.
If engine idle speed is greater than 1400 rpm, notify your supervisor.
COMPRESSOR
7. EXCESSIVE OIL CARRY-OVER AT AIR DISCHARGE,
Check oil level in oil separator sight tube.
If oil is above maximum level (see LO 5-4310-452-12), notify your supervisor.
8. COMPRESSOR OVERHEATS,
Step 1. Check for dirty or clogged compressor oil cooler.
Clean compressor oil cooler (see paragraph 3-7).
Step 2. Check for loose, slipping, or broken fan belt.
If fan belt is loose, slipping, or broken, notify your supervisor.
Step 3. Check compressor oil level.
If oil level is low, notify your supervisor.
Step 4. Check to see if compressor oil is proper grade.
If oil is not proper grade, notify your supervisor.
Step 5. Check to see if cooling air is recirculating.
Relocate unit so wind does not recirculate cooling air.
9. AIR DISCHARGE CAPACITY TOO LOW.
Step 1. Check for dirty compressor air cleaner.
Clean compressor air cleaner (see paragraph 3-4).
Step 2. Check to see if compressor maintains proper air line pressure of 100 psi (690 kPa) on discharge gage.
If compressor does not maintain proper air line pressure, notify your supervisor.
3-4
