TM 5-4310-362-14
Troubleshooting (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5. Check for loose valve cover hold-down screws (Model 20-904) or loose cylinder head screws
(Model 20-911).
Step 6. Check for wear on internal moving parts. (para 8-16) Replace worn parts. (para 8-17)
4. COMPRESSOR OVERHEATS
Step 1. Check if pump is low on oil.
Add oil to bring level up to full mark on dipstick or gage.
Step 2. Check for dirt in intercooler or cylinder fins.
Remove dirt.
Step 3. Compressor is getting poor ventilation.
Clear obstructions from around the compressor.
Step 4. Check for blown cylinder head gasket.
Replace gasket. (para 8-17)
Step 5. Check for worn valves.
Repair or replace valves. (para 8-13)
Step 6. Check if pump is running backwards (clockwise as you face the flywheel).
Rewire motor so it runs counterclockwise. (para 9-9)
Change 1 8-3
