9.1.7. Diagnostics of malfunctions of manual transmission
| Symptom | Possible reason |
| Vibrations take place | The driveshaft is damaged (see the Head the Transmission line). |
| Ovality of tires takes place (see the Head Routine maintenance of the car). | |
| Balancing of wheels is broken (see Chapters Routine maintenance of the car and Steering). | |
| The universal hinge of the driveshaft is worn-out (see the Head the Transmission line). | |
| The transmission established on neutral transfer makes foreign sounds at the working engine | The release bearing of coupling is worn-out (see the Head Stsepleniye). |
| The bearing of a main shaft of the transmission is worn-out (see the Head the Manual Box of Gear Shifting (MBGS)). | |
| Transmission publishes extraneous noises only on one of transfers | The gear wheels which are in continuous gearing are damaged or worn-out. |
| Synchronizers are damaged or worn-out. | |
| Transmission publishes extraneous noises on all transfers | Level of the greasing liquid fell (see the Head Routine maintenance of the car). |
| Bearings are damaged or worn-out. | |
| The main shaft and/or secondary shaft is damaged or worn-out. | |
| The box "comes off" the chosen transfer | Draft of the mechanism of gear shifting is worn-out, or its adjustment is broken (see the Head the Manual Box of Gear Shifting (MBGS)). |
| Bolts of fastening of transmission to the engine weakened (see the Head the Manual Box of Gear Shifting (MBGS)). | |
| Draft of switching is jammed (see the Head the Manual Box of Gear Shifting (MBGS)). The switching fork is worn-out (see the Head the Manual Box of Gear Shifting (MBGS)). | |
| Leak of gearbox oil takes place | In the transmission a lot of gearbox oil is filled in excessively (see Chapters Routine maintenance of the car and the Manual Box of Gear Shifting (MBGS)). |
| The holder of the bearing of a main shaft is damaged, or its fastening weakened (see the Head the Manual Box of Gear Shifting (MBGS)). | |
| The sealing ring of the holder of the bearing of a main shaft and/or sponge of an epiploon is damaged (see the Head the Manual Box of Gear Shifting (MBGS)). |