Brake Master Cylinder Assembly Removal and Installation

Brake Master Cylinder Assembly Removal and Installation

Brake Master Cylinder Components

Brake Master Cylinder Assembly On-Vehicle Inspection

NOTE:

- The master cylinder and brake booster will lose their original performance if they are disassembled and reassembled.
If any faulty condition is found with the master cylinder or brake booster, replace the part rather than trying to disassemble and repair it.
- Brake fluid is extremely damaging to painted surfaces.
If brake fluid contacts a painted surface, immediately wipe it off and flush the surface thoroughly with water.

Removal

1) Clean external area of brake master cylinder assembly.
2) Depress brake pedal several times to release vacuum in brake booster.
3) Disconnect fluid level switch connector (1) from reservoir.
4) Remove battery.






5) Remove brake fluid in reservoir. Service and Repair
6) Using special tool, loosen flare nuts and disconnect brake pipes (1) from brake master cylinder.
Special Tool
09950-78220





7) Remove brake master cylinder fixing nuts (1).






Installation

Brake Master Cylinder Assembly Inspection
1) Install new O-ring to brake master cylinder assembly.
2) Install brake master cylinder to brake booster.
3) Tighten brake master cylinder fixing nuts (1) to specified torque.

Tightening torque
Brake master cylinder fixing nut (a): 13 Nm (1.3 kgf-m, 9.5 lbf-ft)

4) Connect brake pipe to brake master cylinder and tighten flare nuts (2) using special tool.
Special Tool
09950-78220

Tightening torque
Brake pipe flare nut (b): 19 Nm (1.9 kgf-m, 14.0 lbf-ft)





5) Install battery.
6) Connect fluid level switch connector (1).





7) After installation, bleed air from brake system. Service and Repair
8) Check installed parts for fluid leakage.
9) Check brake pedal for play. Brake Pedal Play Inspection
10) Make sure that brake system operates properly and check fluid leakage.