TROUBLESHOOTING SERVICE MANUAL NUMBER 22
Page 1C-22 90-860074--1 FEBRUARY 2002
Crankshaft Area
Location Possible Causes
1. Crankshaft area, front of engine, timed
to engine speed
1. A. Crankshaft timing gear
B. Oil Pump
C. Rod bearing
D. Main bearing
2. Crankshaft area, center of engine,
timed to engine speed
2. A. Crankshaft striking pan or pan
baffle
B. Rod bearing
C. Main bearing
3. Crankshaft area, rear of engine, timed
to engine speed
3. A. Loose flywheel cover
B. Loose coupler or drive plate
C. Loose flywheel
D. Rod bearing
E. Main bearing
4. Crankshaft area, throughout engine,
timed to engine speed
4. A. Loss of oil pressure
B. Rod bearings
C. Main bearings