Disc & Drum: Overhaul Mazda Tribute I

Disassembly

1. Remove the brake master cylinder. See «BRAKE MASTER CYLINDER»(ref-163516-S02535484742004070100000) under REMOVAL & INSTALLATION.
2. Clean the outside of the brake master cylinder.
3. Remove the brake master cylinder reservoir. (Scheme 61)
4. Remove the seals. (Scheme 62)
5. Remove the snap ring. (Scheme 63)
6. Remove the primary and secondary piston. (Scheme 64) NOTE: If the brake master cylinder bore is damaged, a new brake master cylinder must be installed.
7. Use isopropyl alcohol to clean and inspect the brake master cylinder bore for damage.

Scheme 61

Scheme 62

Scheme 63

Scheme 64

Reassembly

1. Use clean brake fluid to lubricate the new piston assembly seals and the brake master cylinder bore.
2. Install the secondary piston assembly. (Scheme 65)
3. Install the primary piston assembly. (Scheme 66)
4. Install the snap ring. (Scheme 63)
5. Install the seals. (Scheme 62) Lubricate the seals with clean brake fluid and insert the seals into the brake master cylinder.
6. Install the brake master cylinder reservoir. (Scheme 61) Press the brake master cylinder reservoir into the seals until it snaps in securely.
7. Install master cylinder. See «BRAKE MASTER CYLINDER»(ref-163516-S02535484742004070100000) under REMOVAL & INSTALLATION.

Scheme 65

Scheme 66

Note. Be sure the seal is not twisted and is firmly seated in the caliper bore.

Note. Clean all brake caliper components. All parts must be air-dried completely. Coat all internal parts and piston seals with DOT 3 brake fluid before installation.

To assemble, reverse the disassembly procedure. Tighten all fasteners to specification. See TORQUE SPECIFICATIONS .

Note. Numbers in parenthesis refer to numbers in illustration.

1. Remove the rear wheel cylinder. See «WHEEL CYLINDER»(ref-163516-S39244720342004070800000). CAUTION: Do not use denatured alcohol for flushing the brake system or cleaning assemblies where alcohol could be trapped. If denatured alcohol is trapped, it can cause eventual failure of rubber components in the system. CAUTION: Never allow any petroleum product or mineral oil to contact the inside of a brake hydraulic system. Mineral oil and petroleum products deteriorate the natural rubber seals used in brake hydraulic system. If a brake system becomes contaminated, it must be flushed with clean brake fluid and all new rubber seals and flex hoses must be installed. Use DOT 3 brake fluid.
2. Disassemble the rear wheel cylinder. (Scheme 67) Remove the bleeder screw cap (1). Remove the bleeder screw (2). Remove the dust boots (3). Remove the pistons and piston seals (4). Remove the spring (5). Disassemble as order in illustration.
3. Inspect the rear wheel cylinder bore for wear, rust or pits. If any of these conditions exist, install a new wheel cylinder.

Scheme 67

To assemble, reverse the disassembly procedure. Tighten all fasteners to specification. See TORQUE SPECIFICATIONS . Bleed air from system. See BLEEDING BRAKE SYSTEM .