Brake Master Cylinder: Service and Repair

Brake Master Cylinder

Service Repair No - 70.30.08

Remove





1. Disconnect brake fluid level multiplug.
2. Position cloth under master cylinder to absorb spilled fluid.

CAUTION: Brake fluid will damage paint finished surfaces. If spilled, immediately remove fluid and clean area with water.





3. Disconnect secondary system pipe union from master cylinder.
4. Disconnect primary system pipe union from master cylinder.

CAUTION: Always fit plugs to open connections to prevent contamination.

5. Remove Torx bolt securing master cylinder reservoir to access master cylinder retaining nut.
6. Remove and discard 2 nuts securing master cylinder to servo, remove master cylinder.
7. Refit Torx bolt to reservoir.
8. Remove and discard sealing ring.

Refit
1. Clean master cylinder and servo mating surfaces.
2. Remove Torx bolt securing brake fluid reservoir to master cylinder.
3. Fit new sealing ring to master cylinder.
4. Align push rod and position master cylinder to servo.
5. Fit new nuts and tighten 25 Nm (18 ft. lbs.).
6. Fit Torx bolt securing reservoir to master cylinder and tighten to 8 Nm (6 ft. lbs.).
7. Clean brake pipe unions.
8. Connect primary and secondary brake pipes and tighten unions 17 Nm (12 ft. lbs.).
9. Connect fluid level switch multiplug.
10. Bleed brakes.