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 TM 55-1905-220-14-3
Table 3-28.
Generator Engine - Low Oil Pressure Troubleshooting.
(Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
Poor circulation (Cont).
Step 2.
Check for cooler by-pass valve not functioning properly.
Remove the by-pass valve and clean the valve and valve seat and inspect the
valve spring. Replace defective parts. Refer to paragraph 3-94.
Step 3.
Check for pressure regulator valve that is not functioning properly.
Remove the pressure regulator valve and clean the valve and valve seat and
inspect the valve spring. Replace defective parts. Refer to paragraph 3-94.
Step 4.
Check for excessive wear on crankshaft bearings.
a. Change the bearings. Refer to paragraph 3-98.
b. Refer to Lubrication Oil Grades Table for the proper grade and viscosity of oil.
c.
Change the oil filters. Refer to paragraph 3-74.
Step 5.
Check for gallery, crankshaft or camshaft plugs missing.
Replace missing plugs. Refer to paragraph 3-93.
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 3-100.
3-106
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