Master Brake Cylinder — Removal and Installation (Opel Ascona C)

1. Unscrew the cap from the fluid reservoir and set it aside along with the float and level warning switch (photo).



2. Pump out as much liquid as possible from the tank using an old (clean) hydrometer or something similar.

3. Remove the cable holder from the master cylinder body (where is it).

4. Disconnect the fluid pipes from the master cylinder by unscrewing the couplings.

5. Two pressure regulating valves are screwed into the master cylinder and now need to be unscrewed.

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6. Unscrew the master cylinder from the brake vacuum servo unit (booster) (photo).





7. If disassembly was performed for the purpose of replacing the master cylinder, save the fluid reservoir for installation on the new cylinder. To remove the reservoir from ATE type master cylinders, simply pull it off the rubber seals. For GMF type master cylinders, the retaining spring rings must first be pushed back using a screwdriver.

8. Assembly is carried out in reverse order; use new rubber seals and tighten all bolts to the specified torque value.

9. Bleed the hydraulic system as described in Section 20.