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 TM 55-1905-223-24-1
Table 2-2. Troubleshooting-CONT
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
STEP
2.
Check if oil pressure gauge malfunctioning.
Check oil pressure gauge against one of known accuracy. Replace if faulty.
STEP 3.
Check if oil temperature above normal [250 (120 )].
F
C
Refer to "Lube Oil Temperature Too High," Malfunction 7.
STEP 4.
Check if oil transfer or suction tube broken.
Remove oil pan and inspect. Refer to para. 2-36.
7. Lube Oil Temperature Too High.
STEP 1.
Check for incorrect oil level.
Add or drain engine oil.
STEP 2.
Check for high engine coolant temperature [above 212 (100 )].
F
C
Check "Coolant Temperature Above Normal," Malfunction 1.
STEP 3.
Check if oil temperature gauge malfunctioning.
Check gauge against one of known accuracy. Replace if faulty.
8. Lube Oil Sludge in the Crankcase Excessive.
STEP 1.
Inspect if oil filter(s) is dirty.
Replace oil filters. Refer to PMCS, Table 2-1, Item 7.
STEP 2.
Check if engine coolant temperature too low [below 140 (60 )].
F
C
Check "Coolant Temperature Below Normal," Malfunction 2.
STEP 3.
Inspect for internal coolant leaks.
Pressure test the cooling system. Refer to para. 2-13.
9. Oil Consumption Excessive.
STEP 1.
Check for external oil leaks.
Tighten capscrews, pipe plugs, and fittings.
STEP 2.
Check for blowby restriction causing external oil leaks.
Check crankcase breather and tube.
STEP 3.
Inspect for incorrect dipstick calibration.
Check dipstick calibration. Refer to PMCS Table 2-1, Item 1.
STEP 4.
Inspect for oil contaminated fuel.
Refer to "Fuel in the Lubricating Oil," Malfunction 11.
STEP 5.
Check for high oil temperature [above 250 (120 )1.
F
C
Check engine oil and coolant levels. Refer to PMCS Table 2-1, Items 1 and 2.
2-25
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