Symptom | Possible reason |
There are vibrations | Damaged cardan shaft (see chapter transmission line). |
Tire out-of-roundness (see chapter Car maintenance). | |
Wheel balance out of alignment (see chapters Car maintenance and Steering). | |
Worn propshaft universal joint (see chapter transmission line). | |
Transmission in neutral makes noise when engine is running | Worn clutch release bearing (see chapter Clutch). |
Gearbox input shaft bearing worn (see chapter Manual gearbox (RKPP)). | |
The transmission makes extraneous noise in only one of the gears | Gears in constant mesh are damaged or worn. |
Damaged or worn synchronizers. | |
Transmission makes strange noises in all gears | Lubricant level dropped (see chapter Car maintenance). |
Damaged or worn bearings. | |
Damaged or worn input shaft and/or output shaft. | |
Box "jumps off" from selected gear | Gearshift linkage worn or out of adjustment (see chapter Manual gearbox (RKPP)). |
Loose transmission-to-engine bolts (see chapter Manual gearbox (RKPP)). | |
Shift rod stuck (see chapter Manual gearbox (RKPP)). Worn shift fork (see chapter Manual gearbox (RKPP)). | |
Transmission oil leaks | Too much transmission oil in the gearbox (see chapters Car maintenance and Manual gearbox (RKPP)). |
Main shaft bearing holder damaged or loose (see chapter Manual gearbox (RKPP)). | |
Damaged input shaft bearing retainer o-ring and/or stuffing box lip (see chapter Manual gearbox (RKPP)). |