Component Tests and General Diagnostics

For the clutch to operate correctly, it is important the following conditions are satisfied:

A. The primary shaft 15 must be free in the crankshaft spigot bush 17.

B. The friction plate 2 must be able to slide easily on the splines on the primary shaft 15, to a position where it does not contact either the flywheel or the pressure plate.

C. The friction plate must not be distorted or the linings contaminated with oil, which may cause it to stick or continue to run in contact with the flywheel or pressure plate.

A number of faults can develop in the operation of the clutch for a variety of reasons and although most faults are due to normal wear at high mileage, problems can also occur if the unit has been renewed by an unskilled operator.

Recognizing and diagnosing a particular clutch fault is therefore of paramount importance in ensuring, that the problem is rectified at the first attempt.

Problems which develop in the clutch are as follows:
A. Clutch spin/drag
B. Clutch slip
C. Clutch judder/fierce