TM 5-3805-281-24-1
Diagnostic Information
Symptom
Problem
Solution
Internal oil passages leak and/or
Check, repair. See Engine Repair
spray cooling jet missing
chapter.
Pressure pipe from oil pump leaking
Check. See Engine Repair chapter.
Oil pump drive gear loose
Check, repair drive gear. See Engine
Repair chapter.
Oil pump gear and/or housing worn
Repair. See Engine Repair chapter.
9010
15
8
Excessive main or connecting rod
bearing clearance
Repair chapter.
High Engine Oil Pressure
Oil viscosity wrong (too thick)
Drain and refill with correct oil. See
Group 9000-04.
Pressure regulating valve stuck or
Verify, repair. See Engine Repair
misadjusted
chapter.
Piston cooling spray orifices plugged
Verify, clean. See Engine Repair
chapter.
Anti-freeze in engine oil
Verify, repair, change oil.
Engine Uses Too Much Oil
Wrong oil
Use correct oil. See Group 9000-04.
Oil level too high
Correct. Check to see if some other
fluid is leaking into oil.
Oil leaks
Check engine oil drain plug.
Air cleaner plugged
Clean air cleaner elements or install
new elements
Remove, clean. See Engine Repair
chapter.
Engine operating too hot or oil cooler
Test cooling system. See Group
water passage plugged
9010-25. Test thermostat. See
Engine Repair chapter.
Continued on next page
CED,TX14795,4357
1917APR988/12
3-36