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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
2. Poor circulation (Cont).
Step 4.
b. Refer to Lubrication Oil Grades Table for the
proper grade and viscosity of oil.
c. Change the oil filters. Refer to paragraph 3-16.
Step 5.
Check for gallery, crankshaft or camshaft plugs
missing.
Replace missing plugs. Refer to paragraph 3-32.
3. Pressure gage and alarm switch.
Step 1.
Check for faulty gage.
Check the oil pressure with a reliable gage and
replace the gage if found faulty. Refer to para-
graph 3-24.
Step 2.
Check for gage line obstruction.
Remove and clean the alarm switch. Replace it,
if necessary. Refer to paragraph 3-24.
Step 3.
Check gage orifice plugging.
Remove and clean the alarm switch. Refer to para-
graph 3-24.
Step 4.
Check electrical alarm panel for faults (pilot
house).
Repair or replace defective electrical equipment.
Refer to paragraph 3-9.
4. Oil pump.
Step 1.
Check intake screen for partial clogging.
a. Remove and clean the oil pan and oil intake
screen. Refer to paragraphs 3-35, 3-36 and
3-39.
3 53
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