Master Cylinder: Removal
- Clean around brake fluid reservoir cap, by pipe connections, and, if necessary, by hose connection between reservoir and master cylinder to prevent dirt entering braking system.
- Release non-return valve in air hydraulic brake power assist unit (brake servo) or pump brake pedal until it goes hard to avoid any vacuum remaining when undoing the master cylinder.
- Put rags under master cylinder to prevent brake fluid spillage on paintwork surfaces.
- Ensure ignition is off. Remove brake fluid reservoir. Disconnect connector to EBD sensor from master cylinder.
- Disconnect brake pipe from master cylinder. Plug brake pipe to prevent dirt entering braking system. Remove mounting nuts and master cylinder. See Figure.
NOTE:
The "O" ring acting as a seal will be sucked into the servo and disappear if vacuum is not released.