22 · Diagnostics

Clutch not releasing correctly

Fault diagnosisClutch not releasing correctly

CLUTCH NOT RELEASING CORRECTLY

There is sticking or noise ("scraping") during low gear changes or when engaging reverse gear

1	CLUTCH PEDAL CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the clutch pedal travel	Continue to Step 2	Pedal travel not correct	Restore the operation of the clutch pedal Op. 1820A14
2	CLUTCH PLATE CHECK	All OK	Problems met	Operation
	Check: clutch plate wear that the clutch plate is not distorted that there is no damage to the pressure plate diaphragm spring	Continue to Step 3	Clutch plate or pressure plate faulty	Replace the clutch disc or pressure plate Op. 1810A20
3	CHECK SPLINED HUB	All OK	Problems met	Operation
	Check for the presence of dirt, rust or dents in the splined part of the clutch disc hub and on the gearbox main shaft	Continue to Step 4	Gearbox main shaft hub faulty	Replace the gearbox main shaft (see Assembly 2110B)
		Continue to Step 4	Clutch plate hub bushes faulty	Restore the correct lubrication for the bushes If necessary, replace the clutch plate Op. 1810A20
4	FLYWHEEL CHECK	All OK	Problems met	Operation
	Check the condition of the flywheel (in particular, the condition of the surface and that there are no signs of overheating)	Continue to Step 5	Flywheel damaged	Replace the flywheel Op. 1024B22
5	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'

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