TM-5-4310-389-14
Table 3-2. Unit Troubleshooting Procedures (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
COMPRESSOR (Contd)
3.
Low copressor oil pressure (shutdown) (Contd).
Step 3. Check oil pressure regulator for proper setting. Notify Direct Support Maintenance. Clean or
adjust.
Step 4. Check to see if cooling fins are dirty. Clean.
4.
Compressed air has oily taste.
Step 1. Check to see if wrong oil is being used. Drain and replace.
Step 2. Check to see if cartridge life has expired. Notify Direct Support Maintenance. Replace.
Step 3. Check compressor oil pressure. Adjust.
5.
Sight glass exhibits air bubbles.
Step 1. Check to see if the oil pressure regulator is dirty. Clean and adjust oil pressure regulator.
Notify Direct Support Maintenance.
NOTE
Small air bubbles are normal in sight glass when compressor is above 4500 psi.
6.
Compressor does not attain final pressure.
Step 1. Check to see if final stage safety valve is opening prematurely. Clean final safety valve and
readjust. Notify Direct Support Maintenance.
Step 2. Check to see if condensate drain valves or fittings are leaking. Tighten and reseal.
7.
Excessive vibration of unit.
Step 1. Check antivibration mounts for wear, looseness, or damage. Tighten.
Step 2. Check to see if compressor or engine bolts are loose. Tighten. Notify Direct Support
Maintenance.
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