Sequence of works
Time shown is 15 min.
1. Apply the vehicle's parking brake and start the engine.
2. Engage 3rd gear, slowly release the clutch pedal and lightly press the accelerator pedal. If the clutch is working properly, the engine should stall. If the engine continues to run, then the automatic clearance adjustment is at the extreme limit. In this case, the clutch disc must be replaced.
The clutch is slipping
Clutch slippage is especially noticeable when driving in top gear, when maximum power is required from the engine and under load the engine "screws", i.e. develops significantly higher revolutions than corresponds to the speed of movement. At start-up, clutch wear is less noticeable. The reason for this may be, in addition to wear or oiling of the driven disk, wear of the flywheel and friction surfaces of the pressure plate or weak clamping force of the clutch. As a result, it may be necessary to replace not only the driven, but also the pressure plate. The clutch should be checked at a service station during routine maintenance using a special calibration tool.
Clutch disengagement
Time shown is 15 min.
1. Start the engine, warm it up and bring it to idle speed.
2. Press the clutch pedal all the way down, wait about 3 seconds and engage reverse gear. If extraneous sounds are present, this means that the driven disk is not released completely and the clutch is not disengaged completely.
If shifting gears is accompanied by creaking or crunching sounds, the clutch is most likely not disengaging completely. To check, perform the test described below with the unsynchronized reverse gear engaged. This test eliminates the possibility that the cause of the extraneous sounds is a malfunction of the gearbox.