Sign | Cause |
Transmission is noisy in neutral | Oil level too low or wrong type of oil Worn input shaft or bearings Incorrect input shaft side play Clutch damage - see Section 5 |
The transmission is noisy only when driving (in all gears) | Oil level too low or wrong type of oil Worn input shaft or bearings Incorrect input shaft side play Worn output shaft or bearings Incorrect output shaft bearing preload Worn differential or bearings Incorrect differential bearing preload Output shaft/castle gear teeth are worn or chipped |
The transmission is noisy only when driving (only in one gear) | Gear teeth are worn or chipped Worn gear bushing or bearing |
Transmission slips out of gear | The selector mechanism is worn or damaged Weak, worn or damaged pick-up mechanism locking parts (especially the springs) Selector rod or bias yoke shaft/rod retainer groove worn Worn or damaged bias forks Synchronizers worn or damaged Incorrect preload/shaft side play |
Noise when changing gear | Synchronizers are worn out (especially blocking rings and cones) Wrong grade oil Clutch damage - see Section 5 |
Gears are difficult to engage | Clutch damage - see Section 5 Worn or damaged shift rack or broken return spring The selector mechanism is worn or damaged Synchronizers worn or damaged |
Note: This Chapter does not provide comprehensive troubleshooting information, but describes more general damage that may be encountered during the life of the vehicle. Consult your dealer for more specific advice.