Workshop Manuals Factory service & repair

Alfa Romeo GT Factory Service Manual (2003-2010)22 · Fault diagnosis

22 · Diagnostics

Poor braking action

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Braking system › Poor braking action

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Fault diagnosisPoor braking action

POOR BRAKING ACTION

As the pressure on the brake pedal increases, a corresponding braking action is not detected

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check softness of brake pedal Check stiffness of brake pedal	Continue to Step 1	Brake pedal too soft	Continue according to the instructions in See table See table F10 EXCESSIVE BRAKE PEDAL FREE PLAY
		Continue to Step 1	Hardening of brake pedal	Continue according to the instructions in See table See table F12 BRAKE PEDAL HARD
1	CHECK ON CONTACT SURFACES	All OK	Problems met	Operation
	Check type and surfaces of contact	Continue to Step 2	Front pads or discs vitrified	Replace the pads Op. Op. 3310A60 FRONT BRAKE PADS - REPLACE or renew the disc surfaces
			Rear pads or discs vitrified	Replace the pads Op. Op. 3310B60 REAR BRAKE PADS - REPLACE - INCLUDES HANDBRAKE ADJUSTMENT IF NECESSARY or renew the disc surfaces
			Dirty surfaces	Clean the surfaces in question
			Deteriorated contact surfaces with front disc	Grind the discs, or replace, if necessary Op. Op. 3310A50 FRONT BRAKE DISCS R R
			Deteriorated contact surfaces with rear disc	Grind the discs, or replace, if necessary Op. Op. 3310B50 REAR BRAKE DISCS R R
2	CHECK ON WHEEL CYLINDERS	All OK	Problems met	Operation
	Check that the wheel cylinders are not seized	Continue to Step 3	Front wheel cylinders seized	Replace front calipers Op. Op. 3310A32 FRONT BRAKE CALLIPERS BOTH R R
	Check that the wheel cylinders are not seized	Continue to Step 3	Front wheel cylinders seized	Replace rear calipers Op. Op. 3310B34 REAR BRAKE CALIPERS - R + R - INCLUDES HANDBRAKE ADJUSTMENT AND BLEEDING
3	CHECK ON BRAKING ACTION	All OK	Problems met	Operation
	Check that the brake effect does not decrease even after several braking actions	Continue to Step 4	The braking effect decreases significantly	Change the brake-clutch fluid Op. Op. 0010T62 POWER STEERING FLUID CHECK LEVEL AND TOP UP IF NECESSARY
4	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Test the vehicle before delivery to the customer, checking that the fault is no longer present The test is essential, as the braking system is a safety feature of the car	End of diagnosis

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Parts & tools for this job For 2003 Alfa Romeo GT

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