Front Disc Brake Pads Replacement (J64)

Front Disc Brake Pads Replacement (J64)

Warning: Refer to Brake Dust Warning Brake Dust Warning.


Note: Always replace disc brake pads in axle sets.

Removal Procedure

1. Inspect the fluid level in the brake master cylinder reservoir.

2. If the brake fluid level is midway between the maximum-full point and the minimum allowable level, no brake fluid needs to be removed from the reservoir before proceeding.

3. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level, remove brake fluid to the midway point before proceeding.

4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle Service and Repair.

5. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation Service and Repair.




6. Hold the end of the brake pad spring down and carefully drive out the lower brake caliper pin (1) from the brake caliper.




7. Carefully drive out the upper brake pad pin (1) from the brake caliper.




8. Remove the brake pad spring (1).

9. Using a spreader tool, carefully push the brake caliper pistons into the caliper bores until fully seated.





Note: The brake caliper bolts must be replaced any time they are removed. Do not reuse the brake caliper bolts.

10. Remove and discard the brake caliper bolts (1).

Caution:
Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

Note: Do not disconnect the brake hose fitting from the brake caliper.

11. Remove the brake caliper from the steering knuckle and support with heavy mechanics wire.




12. Remove the brake pads (1).

Installation Procedure

1. Inspect the brake caliper pins and brake pad springs for damage or excessive corrosion and replace, if necessary.




2. Install the brake pads (1).





Caution: Refer to Fastener Caution Fastener Caution.

Note: The brake caliper bolts must be replaced any time they are removed.

3. Install new brake caliper bolts (1) and tighten to 150 Nm (111 lb ft) + 30 degrees.




4. Install the brake pad spring (1).




5. Insert the upper brake caliper pin (1) into the caliper housing and through the disc brake pad locating loops.

6. Carefully drive the upper brake caliper pin into the brake caliper.

7. Ensure the brake caliper pin is fully seated in the brake caliper.




8. Hold the end of the brake pad spring down and insert the lower brake caliper pin (1) into the caliper housing and through the disc brake pad locating loops.

9. Carefully drive the lower brake caliper pin into the brake caliper.

10. Ensure the brake caliper pin is fully seated in the brake caliper.

11. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation Service and Repair.

12. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.

13. Slowly release the brake pedal.

14. Wait 15 seconds, then repeat steps 12 and 13 until a firm brake pedal apply is obtained. This will properly seat the brake caliper pistons and brake pads.

15. Fill the brake master cylinder reservoir to the proper level. Refer to Master Cylinder Reservoir Filling Master Cylinder Reservoir Filling.

16. Burnish the brake pads and rotors. Refer to Brake Pad and Rotor Burnishing Procedures.