22 · Diagnostics

Clutch pedal hardening

Make: Fiat
Model: Grande Punto Factory Service Manual
Year: 2005–2012
Section: Clutch › Clutch pedal hardening

‹ Prev Clutch vibrating or jerking Next › Poor braking action

Fault diagnosisClutch pedal hardening

CLUTCH PEDAL HARDENING

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Results of the tests
	Check whether there is excessive resistance when the clutch pedal is pressed. N. B.: Since this symptom is "subjective", make sure that there is actually hardening compared with the previous so-called normal situation or compared with similar vehicles.	Move on to Step 1
1	CLUTCH LEVER TRAVEL CHECK	All OK	Problems encountered	Operation
	Check, inside the engine compartment, that when the clutch pedal is pressed the clutch control lever on the gearbox completes the correct travel.	Move on to Step 3	Clutch lever on gearbox travel incomplete	Move on to Step 2
2	CLUTCH PEDAL CHECK	All OK	Problems encountered	Operation
	Clutch pedal disconnected from transmission Op. 3330B26 CLUTCH PEDAL - R+R check that the travel is free and there is no sticking or hardening	Move on to Step 3	Clutch pedal clearance or hardening	Replace the pedal Op. 3330B26 CLUTCH PEDAL - R+R
3	VISUAL INSPECTION FOR LEAKS OR SEEPAGE	All OK	Problems encountered	Operation
	- Visually inspect the operating cylinder and pipes - Check that there is no seepage, leaks or damage	Move on to Step 4	Leaks, damage or seepage from pipes and/or hydraulic connectors	Repair the defective or damaged components
4	CHECK FOR AIR IN THE HYDRAULIC CLUTCH CIRCUIT	All OK	Problems encountered	Operation
	Using the operating cylinder bleed screw, check that there is no air in the circuit	Move on to Step 5	Air in the circuit	Bleed the air
5	CLUTCH CONTROL CYLINDER CHECK (ON VEHICLE)	All OK	Problems encountered	Operation
	- Release the cylinder from the clutch control lever, keeping it connected to the hydraulic system. - Press the pedal producing the thrust pressure and check the push rod travel. - Using a drift, retract the push rod checking that it travels freely.	Move on to Step 7	Clutch control cylinder malfunction	Remove the clutch control cylinder and move on to Step 6
6	CLUTCH CONTROL CYLINDER CHECK (WITH GEARBOX REMOVED)	All OK	Problems encountered	Operation
	With the part at the bench, apply pressure (using compressed air) and check the push rod travel (the test mirrors what was done in the vehicle). N.B.: This test is designed to ensure that the problem is due to the cylinder and not to the pipes or the pump.	Move on to Step 7	Clutch control cylinder malfunction	Replace the clutch control cylinder
7	CLUTCH PEDAL TRAVEL CHECK	All OK	Problems encountered	Operation
	With the system disconnected, check that the travel is correct when the pedal is pressed and released	Move on to Step 8	1. Hydraulic pump malfunction 2. Flexible pipe from clutch reservoir to pump worn or distorted 3. Flexible supply pipe to clutch control cylinder worn or distorted	1. Replace the pump Op. 1820B20 MASTER CYLINDER (PUMP) - R + R 2. Replace the pipe Op. 1820B40 HOSE FROM CLUTCH RESERVOIR TO MASTER CYLINDER (PUMP) - R + R 3. Replace the pipe
8	PLATE LEVER AND BEARING CHECK (WITH GEARBOX REMOVED)	All OK	Problems encountered	Operation
	After the gearbox has been removed, check that there is no hardening of the lever (as a result of dirt or insufficient greasing) and that the plate bearing slides freely in its housing and shows no signs of damage.	Move on to Step 9	1. The presence of dirt or wear due to insufficient greasing does not allow the plate bearing to slide correctly 2. Clutch release fork half casings worn/broken	1. Replace the faulty or damaged components 2. Replace the release fork half casings
9	CLUTCH ASSEMBLY CHECK	All OK	Problems encountered	Operation
	Visually inspect the condition of the clutch assembly making sure it is not broken (pressure plate) and/or showing signs of obvious deterioration (disc). Measurements using the gauge as in the manual.	Move on to Step 10	Obvious deterioration of the clutch disc and/or plate broken	Replace the assembly
10	CLUTCH SLIDING SPLINED HUB CHECK	All OK	Problems encountered	Operation
	Check the following, in order: - for excess grease on the clutch plate hub bushes and the gearbox main shaft; - the condition of the main shaft hub.	Move on to Step 11	Main shaft damaged, hub worn, excess grease on the bushes	Replace the hub and/or main shaft
11	FLYWHEEL CONDITION CHECK	All OK	Problems encountered	Operation
	Check the condition of the flywheel. In particular, check: - the state of the surface; - wear; - cuts; - presence of grease/oil on the disc surfaces; - signs of overheating	End of diagnosis	1. Flywheel damaged 2. Presence of dust in the flywheel friction seal	1. Replace the flywheel 2. Remove the dust from the flywheel friction seal.

‹ Prev Clutch vibrating or jerking Next › Poor braking action

Parts & tools for this job For 2005 Fiat Grande Punto

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.