Note: Always replace all pads on one axle of the vehicle, even if only one pad is worn.
Removal
- Raise the rear of the car, support it on jack stands and remove the wheel.
- Remove the pin (1. Fig. 12.13) brake shoe retaining pin fasteners
- Using a punch with a thin cylindrical end, knock out the locking pin (2) of the brake pads in the direction from the inside to the outside of the car.
Fig. 12.13. Rear brake pad fixing elements: 1 - pin; 2 - locking pin; 3 - pressure spring
Fig. 12.14. Location of the lower (A) and upper (B) bolts for fastening the guide pins of the rear disc brake caliper bracket
Fig. 12.15. Using the Fre. 1190 tool to screw the piston into the caliper
Fig. 12.16. Installation position of the pressure spring (R)
- Remove the brake shoe pressure spring (3).
- Remove the bolt (A, Fig. 12.14) lower guide pin fastenings.
- Rotate the caliper bracket around the upper guide pin mounting bolt (B).
- Remove the outer, then the inner brake pads.
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Examination
- Check the condition and fastening of the piston dust cover and springs.
- Check the free movement of the brake caliper bracket on the upper guide pin.
- Check for leaks from the caliper and the condition and position of the piston dust boot.
Installation
- Rotate the piston with the Fre. 1190 tool and screw it into the caliper (fig. 12.15) If necessary, loosen the upper guide pin mounting bolt to install the device.
- Starting with the inner pad, install the new brake pads.
- Install the guide springs correctly (R, Fig. 12.16).
- Lower the caliper bracket onto the pad guide and install the lower guide pin mounting bolt, applying Loctite FRENBLOC to the bolt threads and tighten to the specified torque.
Note: If the upper guide pin retaining bolt was removed, it should be installed first. Apply Loctite FRENBLOC to it and tighten it to the specified torque.
- Install the brake shoe retaining pin by passing it through the coils of the pressure spring.
- Using a fine cylindrical end punch, install the brake shoe retaining pin from the outside to the inside of the vehicle.
- Install the locking pin.
- Press the brake pedal several times to set the piston to the working position.
- Check the parking brake adjustment. The hand brake levers should start moving when the parking brake lever is raised to a position between the first and second sector teeth and remain free when the lever is set to the second sector tooth.