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EXCESSIVE FUEL CONSUMPTION - TM-5-4310-354-140089
AIR COMPRESSOR OVERHEATING

TM-5-4310-354-14 Compressor Rotary; Air Skid Mounted; Diesel Engine 125 CFM 100 PSIG (Davey Model 6M125) Manual
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TM 5-4310-354-14
Table 4-2. Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE - continued
15. ENGINE STOPS SUDDENLY - continued.
Step 3. Check for low engine oil pressure (safety switch shutdown).
Add oil to crankca se as necessary. Refer to LO 5-4310-354-12, figure 3-1.
Step 4. Check operation of engine oil pressure switch.
Replace a defective engine oil pressure switch (para 4-67).
Step 5. Check for air compressor overheating (safety switch shutdown).
Add oil to separator tank as necessary. Refer to LO 5-4310-354-12, figure 3-1.
Step 6. Check operation of compressor oil temperature shutdown switch.
Replace a defective compressor oil temperature shutdown switch (para 4-70).
Step 7. Check for engine overspeed trip (safety shutdown switch).
Check all wiring connections to engine overspeed switch (refer to wiring diagram, figure 1-3).
Check overspeed switch transmitter function.  Replace defective transmitter (para 4-69).
Overspeed indicates malfunction of fuel injection pump or other engine malfunction. Notify
Direct Support or General Support Maintenance of this engine overspeed shutdown.
Step 8. Any other cause.
Notify Direct Support or General Support Maintenance.
AIR COMPRESSOR
16. AIR COMPRESSOR OVERHEATING.
Step 1. Check for proper level and grade of oil in separator tank.
Add oil of proper grade as necessary. Refer to LO 5-4310-354-12, figure 3-1.
Step 2. Check for oil cooler obstructions and evidence of leakage.
Remove all obstructions. As necessary, refer to para 4-29 for radiator and oil cooler group
maintenance.
Step 3. Inspect compressor oil temperature gauge for damage.
Replace a defective temperature gauge (para 4-56).
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