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 TM 55-1905-219-14-3
Table 3-7. Propulsion Engine - Low Oil Pressure Troubleshooting. (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Oil pump (Cont).
Step 1.
b. Consult the Lubricating Oil Grades Table for
the proper grade and viscosity of oil.
c. Change the oil filters. Refer to paragraph 3-16.
Step 2.
Check for faulty relief valve.
Remove and inspect the valve, valve bore and
spring. Refer to paragraph 3-36.
Step 3.
Check for air leak in pump suction.
Disassemble the piping and install new gaskets.
Refer to paragraph 3-38.
Step 4.
Check pump for wear or damage.
Remove the pump. Refer to paragraph 3-38.
Step 5.
Check for flange leak (pressure side).
Remove the pump. Refer to paragraph 3-38.
Table 3-8. Propulsion Engine - Abnormal Engine Coolant Operating
Temperature Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Temperature above normal.
NOTE
An alarm will sound in the pilot house.
3-54
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