Brakes - Shudder During Light Application: Overview

90ford17
Article No. 90-11-4

BRAKES-FRONT DISC-SHUDDER DURING LIGHT

BRAKE APPLICATION

STEERING-STEERING WHEEL NIBBLE-DURING LIGHT BRAKE APPLICATION

VIBRATION-SHUDDER OR STEERING WHEEL NIBBLE-DURING LIGHT BRAKE APPLICATION

MERKUR: 1988-89 SCORPIO




ISSUE: A body vibration, steering wheel nibble, or shudder/pulsation in the brake pedal during light brake pedal application may be caused by uneven wear of the disc brake rotors. The old spindle carrier assembly used a "slip-fit" wheel bearing on the spindle shaft. The spindle carrier has been revised to a "press-fit" wheel bearing design. This prevents uneven disc wear by improving the lateral runout caused by the wheel bearing to spindle shaft fit.

ACTION: Install new spindle carrier assemblies and front rotors. On cars built before 3/01/89 install new improved outer control arm to stabilizer bar bushings. Refer to the following procedure for service details.

NOTE: WHEN LOOKING FOR A BRAKE SHUDDER, IT IS IMPORTANT TO DIAGNOSE THE CONDITION ACCURATELY BEFORE TAKING CORRECTIVE ACTION. IT IS IMPORTANT TO FOLLOW THIS REPAIR PROCEDURE CLOSELY TO RESOLVE THE CONCERN.