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 ENGINE
TROUBLESHOOTING
CAUSE
REMEDY
9. Air cleaner clogged (blue smoke)
9. Service air cleaner.
10. High oil pressure
10. Free-up relief valve in the oil pump.
Replace spring if necessary.
Bearing Failures
1. Continuous overspeeding of the engine
1. Continuous operation at maximum speed
or close to it is to be avoided. Exercise
caution when going down grade. Do not allow
vehicular speed to exceed same speed obtain-
able in same gear on level terrain.
2. Lack of oil
2. Keep oil level at "Full" mark on bayonet
gauge.
3. Inferior grade of oil or oil of improper
3. Use good quality oil of proper viscosity.
viscosity
4. Low oil pressure
4. Check oil level. Fill to "Full" mark on
gauge. Check oil pump and relief valve
spring. Replace parts as necessary.
5. Bent connecting rod
5. Replace connecting rod.
6. Crankshaft rough or out-of-round
6. Regrind or replace shaft.
7. Restricted oil passages
7. Clean oil lines and passages. Replace
oil filter element.
8. Bearings loose or improperly fitted
8. Replace main or connecting rod bearings.
9. Dirt or other matter in lubricating oil
9. Drain crankcase and refill with clean oil.
Service breather air filter regularly. Re-
place oil filter element.
Low Oil Pressure
1. Oil pressure gauge defective
1. Replace gauge.
2. Oil pump strainer screen in oil pan clogged
2. Clean screen.
3. Oil too hot, resulting in low viscosity
3. Correct cause of overheating.
4. Pressure regulator piston worn or clogged
4. Clean or replace piston or spring if
necessary.
B-32
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