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 TM 55-1905-220-14-3
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
paragraph 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 paragraph 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.
3-51
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