CTS Wagon RWD V6-3.6L (2010)
Brake Caliper: Overhaul
Front Brake Caliper Overhaul (JE5, J55)
Front Brake Caliper Overhaul (JE5, J55)
Warning: Refer to Brake Fluid Irritant Warning (See: Service Precautions/Technician Safety Information/Brake Fluid Irritant Warning).
Warning: Refer to Brake Dust Warning (See: Service Precautions/Technician Safety Information/Brake Dust Warning).
Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution (See: Service Precautions/Vehicle Damage Warnings).
Disassembly Procedure
Warning
Do not place fingers in front of the caliper piston(s) in an attempt to catch or protect it when applying compressed air. The piston(s) can fly out with
force and could result in serious bodily injury.
Note:
*
Replace all the components included in the repair kits used to service this brake caliper.
*
Lubricate the rubber parts with new Delco Supreme 11(R), GM P/N 12377967 (Canadian P/N 992667) or equivalent DOT-3 brake fluid to make
assembly easier.
*
If any hydraulic component is removed or disconnected, it may be necessary to bleed all or part of the brake system.
*
The torque values specified are for dry, non-lubricated fasteners.
*
Perform the service operations on a clean bench, free from all mineral oil materials.
1. Remove the brake caliper from the vehicle. Refer to Front Brake Caliper Replacement (JE5, J55 (RWD)) (See: Removal and Replacement/Front
Brake Caliper Replacement (JE5, J55))Front Brake Caliper Replacement (JE5, J55 (AWD)) (See: Removal and Replacement/Front Brake
Caliper Replacement (JE5, J55))Front Brake Caliper Replacement (J56) (See: Removal and Replacement/Front Brake Caliper Replacement (J56)
).
2. Drain the brake fluid from the brake caliper.
Caution: Use clean cloths to pad interior of caliper housing during piston removal. Use just enough air to ease the pistons out of the bores. If the
pistons are blown out, even with the padding provided, it may be damaged.
3. Place a 25 mm (1 in) block of wood between the caliper and the piston.
4. 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 block of wood.
5. Carefully remove the brake caliper piston by directing low pressure compressed air into the brake caliper inlet hole.
6. Remove the C-clamp from the caliper.
7. Remove the block of wood from the caliper.
8. Install clean cloths to pad the interior of the caliper housing between the remaining caliper piston and the caliper body.
9. To cover the open caliper bore place a 25 mm (1 in) block of wood between the caliper body and the brake caliper dust boot seal.
10. 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 block of wood.
11. Carefully remove the brake caliper piston by directing low pressure compressed air into the brake caliper inlet hole.
12. Remove the C-clamp form the caliper.
13. Remove the block of wood from the caliper.
