Retrofit Master Brake Cylinder 2-circuit
23.11.2021This instructions will show how to change the master brake cylinder in a P1800S (model year 1968, US model) from old version (vertical bolts) to new version (horizontal bolts). By the way we will show an installation example of the universal brake booster.
Engine compartment before replacement.
Installation example brake booster.
On the left you can see the new cylinder, on the right the old one. In this comparison you can easily identify the 90° rotated mounting holes.
The Skandix adapter plate 1017962.
The bracket has to be taken form the old mbc.
Pressure rod with bracket mounted to the brake pedal.
Mounted studs in the adapter plate.
Stick some body sealing tape to the contact surface to the chassis.
Screw the adapter to the body.
When it´s fixed you have to grind off the protruding edges of the srews.
Machined screws.
Mount the mbc to the adapter.
Connect the brake cylinder to the brake booster, differential pressure valve and existing brake lines. Necessary brake lines have to be mnaufactured individually.
If you want to use the replacement reservoir 1010317 you have to remove the sealy included with the brake cylinder. The resrvoir comes with fixed seals.
Mounted reservoir.
Engine compartment after replacement.
The position and location of the brake booster can be chosen individually.
Our example is a US model, only the front circuit is supported by the brake booster. The European solution is different.
- All notes serve only as an example and do not replace the workshop instructions of the automobile manufacturers! All information is supplied without guarantee!