TM 55-1905-223-24-8
SYMPTOM INDEX - CONT
Troubleshooting
Procedure
OIL PRESSURE
Low
Item 6
VIBRATION
Excessive
Item 4
Table 2-2. Troubleshooting
Malfunction
Test or Inspection
Corrective Action
1.
Compressor knocks.
STEP 1. Check for worn connecting rod bearings.
Replace connecting rod bearings (paragraph 3-19).
STEP 2. Check for worn main bearings.
Replace bearings (paragraph 3-23).
STEP 3. Check for worn piston pin bushing.
Replace piston pin bushing (paragr ph 3-20 or 3-21).
2.
Compressor overheats.
STEP 1. Check for clogged intercooler.
Replace intercooler (paragraph 3-14).
3.
Excessive oil consumption.
STEP 1. Check for worn piston rings.
Replace rings (paragraph 3-19 or 3-20).
STEP 2. Check for bent or twisted connecting rod (paragraph 3-19 or 3-21).
4.
Excessive vibration.
STEP 1. Check for faulty compressor valves.
Replace valves (paragraph 3-18).
3-3
