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Home >> Chevrolet >> 1997 >> Camaro V6-3.8L VIN K >> Repair and Diagnosis >> Brakes and Traction Control >> Hydraulic System >> Brake Caliper >> Service and Repair >> Rear Brake Caliper >> Repair

Repair

Rear Brake Caliper Components:




Rear Brake Caliper - Cutaway View:





DISASSEMBLE
1. Remove caliper. Refer To Rear Caliper Replacement.
2. Parking brake collar return springs (26) from actuating collar boot retainer (31).
3. Actuating collar (24) with assembled parts. Firmly but gently pull actuating collar (24) with assembled parts out of rear brake caliper (14) by pulling on both ends of actuating collar boot retainer (31).
4. Clamp rod (28) and bushing (27) from actuating collar (24). Discard bushing (27).
5. Actuating collar boot retainers (21 and 31), brake caliper piston boot (20), actuating collar boot (25) and pushrod (22) from actuating collar (24). Bend back actuating collar boot retainer tabs and take apart. Remove preload spring (23) from actuating collar boot retainer (21). Remove pushrod (22) from actuating collar boot retainer (21). Remove and discard actuating collar boot retainers (21 and 31), brake caliper piston boot (20), actuating collar boots (25).

CAUTION: 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 may come out with force resulting in serious injury.

NOTE: Use clean cloths to pad interior of caliper housing during piston removal. Use just enough air to ease the piston out of the bore. If the piston is blown out, even with the padding provided, it may be damaged.

Removing Rear Brake Caliper Piston:





6. Piston (19) by directing dry, filtered compressed air into brake hose port of rear brake caliper (14). Inspect Piston (19) for scoring, nicks, corrosion and wear. Replace piston (19) if necessary.

NOTE: Do not use a metal tool to remove the piston seal from the rear brake caliper bore. Using a metal tool may damage the caliper bore or seal groove.

7. Caliper piston seal (18). Use small wood or plastic tool.
8. Bleeder valve cap (7) and bleeder valve (6). Discard bleeder valve cap (7).
9. Parking brake lever pivot pin cap (1), spray clip (2), actuator lever return spring (4) and parking brake actuator lever (5) from parking brake lever pivot pin (3). Discard spray clip (2). Inspect Contact points on parking brake actuator lever (5) and parking brake lever pivot pin (3) for wear and corrosion. Replace if necessary.
10. Parking brake lever pivot pin (3) and pivot pin nut (12), if worn.
11. Adjuster screw (11) from rear brake caliper (14). Discard if damaged or worn. Inspect Caliper mounting plate (17) for wear and damage. Replace if necessary. Refer to Rear Brake Caliper Mounting Replacement. Clean Pad contact area on mounting plate (17).
12. Two guide pins (15) and guide pin boots (16) from mounting plate (17).Clean All parts not included in repair kit in denatured alcohol. Use dry, filtered compressed air to dry parts. Blow out all passages in rear brake caliper (14) and bleeder valve (6). Inspect Rear brake caliper bore for scoring and corrosion. Replace rear brake caliper (14) if badly scored or corroder1 around seal area.

ASSEMBLE
1. Lubricate new caliper piston seal (18) and caliper housing bore seal groove with silicone grease or clean brake fluid.
2. New caliper piston seal (18) into caliper housing seal groove. Make sure caliper piston seal (18) is not twisted.
3. Lubricate bore of rear brake caliper (14) and piston (19) with clean brake fluid.
4. Piston (19) into bore of rear brake caliper (14). Push down by hand to bottom of bore. Inspect Actuating collar (24) and clamp rod (28) for corrosion and excessive wear on working faces. If corrosion or excessive wear is present, replace actuating collar.
5. Pushrod (22), new brake caliper piston boot (20), actuating collar boot (25) and new actuating collar boot retainers (21 and 31) to actuating collar (24). Lightly coat actuating collar (24) with liquid lubricant provided in repair kit. Do not use any other fluid or grease. Install preload spring (23) into new actuating collar boot retainer (21). Install new brake caliper piston boot (20), actuating collar boots (20) into new actuating collar boot retainers (21 and 31). Install pushrod (22) to new actuating collar boot retainer (21). Clamp new actuating collar boot retainers (21 and 31) firmly against actuating collar (24). Bend tabs on new actuating collar boot retainer (21) to hold actuating collar assembly together.
6. Clamp rod (28) to actuating collar (24) and actuating collar boot (25). Lightly coat clamp rod (28) with liquid lubricant provided in repair kit. Slide clamp rod (28) through holes in actuating collar boot (25) and actuating collar (24). Actuating collar boot (25) must be against reaction plate on clamp rod (28).
7. New bushing (27) to clamp rod (28). Lubricate outside of bushing (27) wit provided lubricant.
8. Clamp rod (28) with assembled parts into connecting hole in piston (19). Lubricate grooved bead of actuating collar boot (20) and boot groove in caliper housing (14) with provided lubricant. Use remaining liquid lubricant to coat actuating collar (24), especially around center hole. Push clamp rod (28) firmly to bottom of connecting hole in piston (19). Pull on actuating collar (24) and seat actuating collar boot (20) into boot groove in rear brake caliper (14). Make sure that pushrod (22) enters hole in rear brake caliper (14).
9. Two collar return springs (26) to actuating collar boot retainer (31). Actuating collar boot retainer (31) must enter collar return springs (26) at end of second spring coil.
10. New bleeder valve cap (7) and bleeder valve (6) into rear brake caliper (14). Tighten Brake caliper bleeder valve (6) to 11 Nm (97 inch lbs.).
11. Parking brake lever pivot pin (3) and new pivot pin nut (12) to rear brake caliper (14), if removed. Tighten Parking brake pivot pin nut (12) to 22 Nm (16 ft. lbs.).
12. Lubricate parking brake actuator lever (5) and parking brake lever pivot pin (3) with grease provided in repair kit.
13. Pivot pin cap (1), parking brake actuator lever (5), new spray clip (2) and actuator lever return spring (4), in that order. Teeth of spray clip (2) must face away from parking brake actuator lever (5). Snap pivot pin seal cap over parking brake lever pivot pin (3).
14. Adjuster screw (11) into rear brake caliper (14) until actuating collar (24) is about parallel to piston bore face of rear brake caliper (14).
15. New guide pin boots (16) and guide pins (15). Lubricate two guide pins (15) with grease provided in repair kit. Slide guide pin boots (16) on guide pins (15). Fill guide pin boots (16) with provided grease. Assemble to mounting plate (17). Make sure guide pin boots (16) fit into grooves of guide pins (l5) and mounting plate (17).
16. Install caliper. Refer to Rear Caliper Replacement



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