E02 CLUTCH SLIPPING - Alfa - 166 - eLearn

3308621 - E02 CLUTCH SLIPPING

During acceleration, a consistent increase in the engine speed is noticed without a corresponding increase in the speed of the vehicleThis symptom can be easily checked by pressing the clutch pedal and engaging 4th speed; when accelerating and gradually releasing the clutch pedal; the vehicle does not move and the engine does not cut out

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. 3330B26
2	FLUID LEAKS CHECK	All OK	Problems met	Operation
	Visually inspect for leaks of fluid from the clutch pump or pipes	Continue to Step 3	Fault in the clutch operating circuit	Replace the components involved (see Assembly 1820B)
3	CLUTCH OPERATION CHECK	All OK	Problems met	Operation
	Verify: that the clutch operating cylinder push rod returns correctly to the rest position; the outer surface of the cylinder: make sure that there are no traces of oil, resulting from a leak from the piston inner seal	Continue to Step 4	Clutch operating cylinder faulty	Replace the clutch operating cylinder Op. 1820B30
		Continue to Step 4	Clutch pump faulty	Replace the pump Op. 1820B20
4	CLUTCH PLATE CHECK	All OK	Problems met	Operation
	Verify: clutch plate wear clutch plate fouling (oil or grease) that the clutch plate is not distorted that there is no damage to the pressure plate diaphragm spring	Continue to Step 5	Clutch disc or pressure plate faulty	Replace the clutch plate Op. 1810A20
		Continue to Step 5	Presence of oil or grease	Also replace the gearbox input oil seal Op. 2110C22
5	CHECK SPLINED HUB	All OK	Problems met	Operation
	Check for excess grease on the clutch plate hub bushes and the gearbox main shaft	Continue to Step 6	Gearbox main shaft hub faulty	Replace the gearbox main shaft (see OVERHAULING GEARBOXES Assembly 2110B)
		Continue to Step 6	Clutch disc hub bushes faulty	Restore the correct lubrication of the bushes If necessary, replace the clutch plate Op. 1810A20
6	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, uneven wear, incisions or material removed)	Continue to Step 7	Flywheel damaged	Replace the flywheel Op. 1024B22
7	CHECK ON 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'