Workshop Manuals Factory service & repair Alfa Romeo
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Alfa Romeo GT Factory Service Manual (2003-2010)22 · Fault diagnosis
22 · Diagnostics

Brake pedal oscillation

Make
Alfa Romeo
Model
GT Factory Service Manual
Year
2003–2010
Section
Braking system › Brake pedal oscillation
Fault diagnosisBrake pedal oscillation

BRAKE PEDAL OSCILLATION

During braking the vehicle vibrates and the pedal surges

Results of the tests
1CHECK ON SURGINGAll OKProblems metOperation

With the vehicle moving, press the brake pedal gently.

With the vehicle moving and the brake pedal released, operate the handbrake partly

Continue to Step 2Surging is only present on the brake pedal

If necessary, grind or replace the front discs Op.

Op. 3310A50 FRONT BRAKE DISCS R R

The surging is perceived on both the brake pedal and the handbrake lever.

If necessary, grind or replace the rear discs Op.

Op. 3310B50 REAR BRAKE DISCS R R

2CHECK WHETHER SURGING PERSISTSAll OKProblems metOperation
With the brake discs reground or replaced, carry out the tests described in the previous step againContinue to Step 3The vibration persists only on the brake pedal

Replace the front hubs Op.

Op. 4450C28 FRONT WHEEL HUB - R R

The vibration persists on both the brake pedal and the handbrake lever

Replace the rear hubs Op.

Op. 4450D10 HUB OF ONE REAR WHEEL, L/H OR R/H - R+R WITH WHEEL REMOVED

3CHECK ON CORRECT OPERATIONAll OKProblems metOperation

Test the vehicle before delivery to the customer, checking that the fault is no longer present

The test is essential, as the braking system involves a safety feature of the car

End of diagnosis

Parts & tools for this job For 2003 Alfa Romeo GT

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