Park Brake Shoe Adjustment

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CAUTION: Refer to Brake Dust Caution in Cautions and Notices.

IMPORTANT: The park brake shoes must be adjusted before the park brake pedal is adjusted.

Set the J 21177-A so that it contacts the inside diameter of the rotor.

Fig 1: Measuring Inside Of Rotor

Courtesy of GENERAL MOTORS CORP.

Position the J 21177-A over the shoe and the lining at the widest point.

Fig 2: Adjusting Parking Brake Shoes Using Special Tool

Courtesy of GENERAL MOTORS CORP.

Turn the adjuster nut until the lining just contacts the J 21177-A .
Repeat steps 1-3 for the opposite side.
The clearance between the park brake shoe and the rotor is 0.6604 mm (0.026 in).