7B-42 MSG MODEL
1. ABNORMAL NOISE 1) NOISE IN NEUTRAL Checkpoint
Engine oil
Trouble Cause
Countermeasure
NG
Insufficient or improper engine oil
Replenish or replace the engine oil
NG
Worn flywheel pilot bearing
Replace the flywheel pilot
Worn or broken bearing(s)
Replace the bearing(s)
NG
Worn or scuffed gear tooth contact surfaces
Replace the gear(s)
NG
Worn thrust washers, collars, and gear thrust faces
Replace the thrust washers, collars, and gears
Worn splines
Replace the main shaft and the synchronizer clutch hub
Transmission misalignment
Realign the transmission
OK
Flywheel pilot bearing
OK
Bearings (Mainshaft, countershaft)
NG
OK Gears (Mainshaft, countershaft, and reverse idler gear) OK Mainshaft and countershaft thrust play
OK Mainshaft splines Synchronizer clutch hub splines
NG
OK
Transmission
NG