E02 CLUTCH SLIPPING - Alfa - 156 - eLearn

3233028 - 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
2.5 V6 1.9 JTD 8v 2.4 JTD 10v	Visually check for fluid leaks from the clutch pump and pipes	Continue to Step 3	Fault in the clutch operating circuit	Replace the components involved (see Assembly 1820B)
1.6 TS 1.8 TS [d]	Visually check for fluid leaks from the clutch pump and pipes and the gearbox bell housing (clutch actuator area)	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
2.5 V6 1.9 JTD 8v 2.4 JTD 10v	Check: 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
2.5 V6 1.9 JTD 8v 2.4 JTD 10v		Continue to Step 4	Clutch pump faulty	Replace the pump Op. 1820B20
1.6 TS 1.8 TS [d]	Check the condition of the clutch actuator, inside the gearbox bell housing.	Continue to Step 4	Clutch actuator fault or oil leak	Replace the components involved (see Assembly 1820B)
4	CLUTCH PLATE CHECK	All OK	Problems met	Operation
	Check: 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 plate 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 plate hub bushes faulty	Restore the correct lubrication for 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, irregular wear, incisions or the removal of material)	Continue to Step 7	Flywheel damaged	Replace the flywheel Op. 1024B22
7	CHECK 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'