TM 5-4310-354-14
Table 5-1. Direct Support and General Support Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AIR COMPRESSOR - continued
17. COMPRESSOR IS NOISY.
Step 1.
Inspect for broken rotor blades.
Replace broken rotor blades (para 6-12).
Step 2.
Inspect for defective rotor bearing.
Disassemble air compressor and replace defective bearing (para 6-11).
18. COMPRESSOR NOT OPERATING AT FULL CAPACITY OR PRESSURE.
Step 1.
Inspect for damaged intake control.
Repair or replace any defective parts of the inta ke control (para 6-11).
Step 2.
Check for sticking rotor blades.
Inspect blades and replace, as necessary (para 6-12).
Step 3.
Check fuel injection pump for proper operation of governor and control mechanism.
Repair or replace fuel injection pump, as necessary (para 7-8).
19. EXCESSIVE OIL CONSUMPTION.
Step 1.
Inspect for damaged oil separator element.
Replace damaged element (para 6-4).
Step 2.
Inspect for damaged seals in air compressor.
Disassemble compressor and replace damaged parts (para 6-11).
20. COMPRESSOR UNLOADS BUT ENGINE DOES NOT RETURN TO IDLE.
Step 1.
Check for defective intake control mechanism.
Disassemble and repair or replace all defective parts (para 6-11).
Step 2.
Inspect fuel injection pump speed control lever and the pump for proper timing and operation.
Repair or replace fuel injection pump, as necessary (para 7-8).
21. RECEIVER PRESSURE GAUGE ERRATIC.
Step 1.
Inspect air pressure regulator and blowdown valve for proper operation.
Repair or replace air pressure regulator assembly (para 6-7). Replace a defective blowdown
valve (para 6-6).
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