Common Problems & Cures

All Types Of Issues

Diff shuddering while turning corners?

1. Old oil. Change it and fill to the correct level. 
2. Broken, worn or seized limited slip diff. Strip and replace worn parts.
3. Incorrect oil. Drain oil and fill to the correct level.
4. No LSD additive. Use correct additive. 

Having trouble shifting?

1. Oil too thick. You’ll notice this especially during cold weather and in the first few kms of driving. Use thinner oil to correct this.
2. Clutch not disengaging. Check clutch operation and adjust or replace as needed. 
3. Syncros or sleeves worn out. Strip gearbox and replace parts as needed. 
4. Bent or seized selector rods (Holden 4-speed typical). Replace broken/worn parts.

All gears but the fourth are noisy? (Rear-wheel drive)

1. Gearbox bearings or gears worn out. Strip and replace worn parts.
2. Gearbox oil low. Fill with correct oil to level.
3. Mainshift tip or tip bearing worn. Strip and replace worn parts.
4. Constant mesh gears worn out or broken. 

No drive when gears are selected?

1. Clutch slipping or centre stripped out. Replace clutch and machine flywheel. 
2. Mainshaft or output drive spline worn out or stripped.
3. Broken axle. 
4. Worn diff splines.
5. Woodruff keys in countershaft stripped (will drive in 4th only). 
6. Input gears stripped. Replace broken gears.
7. Drive flange spline stripped. Replace spline pieces.