TM 5-4310-367-14
Table 4-2. Troubleshooting continued
Malfunction
Test or Inspection
Corrective Action
5. SLOW PUMPING OR INSUFFICIENT PRESSURE.
Step 1. Check for leaks in air lines and fittings.
Tighten fittings or replace leaking parts.
Step 2. Check for overloading of the compressor.
a. Reduce air use to less than 8 cfm on model 20-905.
b. Reduce air to less than 5 cfm on model 20-910.
Step 3. Check for loose drive belts.
Tighten belts.
Step 4. Check for low oil level.
Add oil.
Step 5. Check for clogged air fiIters.
Clean air filters.
Step 6. Check for bad intake or exhaust vaIves.
Clean or replace valves.
6. COMPRESSOR RUNS NOISY.
Step 1. Check for loose mounting bolts or flywheel.
Tighten.
Step 2. Check for low oil level.
Add oil.
7. COMPRESSOR OVERHEATS.
Step 1. Check for low oil level.
Add oil.
Step 2. Check for dirt in intercooler or cylinder fins
Remove dirt.
Step 3. Check if compressor is getting poor ventilation.
Move compressor to a site where air can circulate.
