TM 5-4310-452-14
Table 4-2. Mechanical Troubleshooting Procedures (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. SURGES WHEN RUNNING.
Step 1. Check to see if regulating valve is restricted.
Replace regulating valve (see paragraph 4-94).
Step 2. Check for tension on engine speed control inner spring.
Adjust throttle control (see paragraph 4-25).
Step 3. Check to see if engine speed control springs are broken, Replace throttle control (see paragraph
4-25).
7. WILL NOT RUN AT CORRECT SPEED.
Step 1. Check to see if fuel filter is clogged.
Clean or change fuel filter element (see paragraph 4-26).
Step 2. Check to see if engine air cleaner filter is clogged.
Clean or change engine air cleaner filter (see paragraph 4-16).
Step 3. Check to see if pressure regulator is set too low.
Adjust throttle control (see paragraph 4-25).
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COMPRESSOR
1. BLOWDOWN VALVE OPERATES ERRATICALLY.
Step 1. Check for defective blowdown valve diaphragm.
Replace blowdown valve (see paragraph 4-95).
Step 2. Check for dirty blowdown valve.
Inspect and clean blowdown valve.
2. EXCESSIVE OIL CARRYOVER.
Step 1. Check for clogged oil scavenger line.
Remove and clean oil scavenger line (see paragraph 4-86).
Step 2. Check for oil carryover into discharge line.
Replace oil separator filter element (see paragraph 4-87).
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