Rear brake rotor removing and installing

Always replace or machine brake rotors in pairs.

— Press brake pedal down about 1 in. and hold in place with a pedal stop.

This will prevent brake fluid from dripping out of open brake lines while the work is being performed.

— Raise car and remove rear wheels.

Make sure the car is firmly supported on jack stands designed for the purpose. Place the jack stands beneath a structural chassis point. Do not place jack stands under suspension parts.

^ Working at trailing arm, disconnect electrical connector (arrow) for brake pad wear sensor and remove harness from clip on trailing arm.

Remove Rear Hub Porsche 964


How Hydraulic Brakes Work

Disconnect metal brake line from brake caliper. Plug hydraulic fittings.

— Remove brake caliper mounting bolts and remove caliper. See 470 Brakes-Hydraulic.

^ Remove two screws (arrows) mounting brake rotor to hub and remove rotor.

If rotor hangs up and will not slide off, back off parking brake adjuster. See Parking brake shoes, adjusting, later in this section.

— Clean hub face and install new rotor.

— Remainder of assembly is reverse of disassembly.

• Adjust Parking brake shoes as necessary.

• Bleed brakes as described in 470 Brakes-Hydraulic.

Tightening torques

• Brake caliper bleeder screw

• Hydraulic brake line to caliper 14 Nm (10 ft-lb)

Parking brake assembly

1989 Rear Brake Drum Bleeder Screw


1. Bolt, washer, nut (M8) tighten to 25 Nm (18 ft-lb)

2. Backing plate

3. Brake shoes carrier

4. Brake shoe

5. Shoe hold-down assembly

6. Star-wheel adjuster assembly (Right side shown. Left side is installed upside down from illustration.)

7. Return spring

8. Brake rotor/drum

9. Shoe expander assembly

10. Return spring

11. Brake rotor retaining screw tighten to 5 Nm (3.6 ft-lb)

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