How to change the rear brake pads

Tiny
ASHLEY CRUZ
  • MEMBER
  • 2007 PONTIAC G6
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 41,000 MILES
Just was wondering how to get the caliper piston back in so it will go over the pads
Wednesday, September 9th, 2009 AT 10:28 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

The pistone just pushes back into the caliper. A C clamp is all you need to push it back.

If it does not retract, then either the caliper is bad or the brake hose is bad.

https://www.2carpros.com/articles/brake-caliper-replacement

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

Roy

Rear Brake Caliper Replacement

Removal Procedure

Caution: Refer to Brake Fluid Irritant Caution .

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice .

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 suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
5. Remove the tire and wheel assembly.

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6. Install a large C-clamp over the body of the brake caliper with the C-clamp ends against the rear of the caliper body and against the outer brake pad.

Notice: When using a large C-clamp to compress a caliper piston into a caliper bore of a caliper equipped with an integral park brake mechanism, do not exceed more than 1 mm (0.039 in) of piston travel. Exceeding this amount of piston travel will cause damage to the internal adjusting mechanism and/or the integral park brake mechanism.

7. Tighten the C-clamp until the caliper piston is compressed into the caliper bore enough to allow the caliper to slide past the brake rotor.
Do not exceed 1 mm (0.039 in) of caliper piston travel.
8. Remove the C-clamp from the caliper.

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9. Remove the brake hose to caliper bolt from the brake caliper.
10. Remove the brake hose from the brake caliper.
11. Remove and discard the 2 copper brake hose gaskets. These gaskets may be stuck to the brake caliper and/or the brake hose end.
12. Cap or plug the opening in the brake caliper and the brake hose to prevent fluid loss and contamination.

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13. Remove the 2 brake caliper pin bolts.

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14. Remove the park brake cable from the caliper.
15. Remove the brake caliper from the brake caliper bracket.

Hose

Rear Brake Hose Replacement

Caution: Refer to Brake Fluid Irritant Caution .

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice .

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the rear tire and wheel assembly.

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3. Clean all dirt and foreign material from the brake hose ends and brake pipe fitting.
4. Use a flare nut wrench on the brake pipe fitting (1) and a backup wrench on the brake hose (3) as shown.
5. Remove the brake hose retainer (2).

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6. Remove the rear brake hose banjo bolt from the brake caliper.
7. Remove the brake hose from the brake caliper.
8. Remove and discard the 2 copper brake hose gaskets. These gaskets may be stuck to the brake caliper and/or the brake hose end.
9. Cap or plug the opening in the brake caliper and the brake hose to prevent fluid loss and contamination.
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Thursday, February 11th, 2021 AT 11:17 AM

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