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ENGINE KNOCKS
BATTERY CHARGING AMMETER SHOWS NO CHARGE WHEN BATTERIES ARE LOW
TM-9-6115-464-34 Generator Set Diesel Engine Driven Tactical Skid Mtd 15 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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ARMY TM 9-6115-464-34
AIR FORCE TO 35C2-3-445-2
NAVY NAVFAC P-8-624-34
Table 2-2. TROUBLESHOOTING (CONTINUED)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. Worn valve guides or seals (figure 3-46).
Replace valve guides and seals (para. 3-54).
Step 4. Burned valves (figure 3-46).
Replace or repair burned valves (para. 3-54).
Step 5. Defective head gasket (11, figure 3-46).
Replace defective head gasket (para. 3-54).
11. ENGINE OIL CONSUMPTION EXCESSIVE.
Step 1. Leaking seals (figure 3-44).
Check crankshaft seals in timing gear cover. Check bell housing for dripping oil. Replace
seals as necessary (para 3-50, 3-51).
Step 2. Sticking, dirty or defective oil pump pressure
relief valve
(figure 3-31).
Clean, repair or replace oil pump pressure relief valve (para. 3-38).
Step 3. Worn, broken or stuck
piston rings
(20, figure 3-52).
Replace
piston rings
(para. 3-56).
Step 4. Worn valve guides, valve stems, or valve stem seals (figure 3-46).
Replace valve guides, valves and seals (para. 3-54).
Step 5. Oil return passages clogged (figure 3-53).
Clean oil passages (para. 3-57).
12. ENGINE OIL PRESSURE LOW.
Step 1. Dirty, sticking or defective oil pump pressure
relief valve
(4, figure 3-31).
Clean, repair or replace defective oil pump pressure relief valve (para. 3-39).
Step 2. Main
bearings
worn (figure 3-52).
Replace main
bearings
(para. 3-56).
Step 3. Defective oil pump (figure 3-31).
Repair or replace oil pump (para. 3-39).
2-9
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