Buick 25990067 Caliper Assembly, Rear Brake (W/O Brake Pads & Bracket

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Dust created by the brake system is harmful to your health. Never blow it out with compressed air and don't inhale any of it. An approved filtering mask should be worn when working on the brakes. Do not, under any circumstances, use petroleum-based solvents to clean brake parts. Use brake system cleaner only. If replacement is indicated (usually because of fluid leakage), it is recommended that the calipers be replaced, not overhauled. New and factory rebuilt units are available on an exchange basis, which makes this job quite easy. Always replace the calipers in pairs-never replace just one of them. This procedure applies to front and rear disc brakes. Removal: Loosen the wheel lug nuts, raise the end of the vehicle you're working on and support it securely on jack stands. Block the wheels at the opposite end. Remove the wheels. Depress the caliper piston with a C-clamp just enough to allow the pad to clear the disc (On front brakes and rear brakes with parking brake shoes (instead of actuator-type calipers), depress the caliper pistons into the bottom of their bores with a large C-clamp). Caution: Do not attempt to depress the piston into the caliper on later models with parking brake actuator-type calipers. Disconnect the brake line from the caliper and plug it to keep contaminants out of the brake system and to prevent losing any more brake fluid than is necessary (Brake caliper mounting details: Brake line fitting Caliper mounting bolts Caliper mounting bracket bolts). Note: If you're simply removing the caliper for access to other components, don't disconnect the brake line from the caliper. Remove the caliper mounting bolts (or guide pins on rear calipers). Note: On front calipers, hold the guide pin with a wrench to remove the mounting bolts (Hold the guide pin with one wrench while removing the lower caliper mounting bolt with another). Detach the caliper from its mounting bracket. Installation: Install the caliper by reversing the removal procedure. Remember to replace the copper sealing washers on either side of the brake line fitting with new ones. Tighten the caliper mounting bolts and the brake line banjo fitting bolt to the torque. Bleed the brake system. Install the wheels and lug nuts and lower the vehicle. Tighten the wheel lug nuts to the torque. Check the operation of the brakes thoroughly before placing the vehicle into normal service.