Remove/install pendulum support on master brake cylinder - AR42.10-P-0300-02V

Remove 

1. Remove the spring nut (1) from the journal of the tandem master brake cylinder (2).
2. Unscrew nut (3a) of pendulum support (3) and pull pendulum support (3) with grommet (4) off tandem master brake cylinder (2).
3. Check grommet (4) for damage, replace if necessary.
   Fig 1: Identifying Pendulum Support On Master Brake Cylinder Components

   Courtesy of MERCEDES-BENZ USA

   Install 

4. Mount new spring nut (1).

   To stop the pendulum support (3) slipping off the pin of the tandem master brake cylinder (2), the speed nut (1) must be pushed on approx. 5 mm (dimension x).