Removing
1. Press the piston out of the brake caliper with compressed air.
To prevent damage to the piston, install a wooden stop.
2. Remove the O-ring using a wedge (1).
When removing, do not damage the surface of the cylinder.
Installation
Before installing, apply a thin layer of mounting grease G 052150 A2 to the piston and sealing ring.
1. Insert the O-ring into the cylinder.
2. Push the outer lip of the seal onto the piston.
3. Insert the inner edge of the seal into the groove of the cylinder using a wedge (1).
The piston is placed in front of the caliper.
4. Press the piston into the caliper using the tool.
The outer edge of the sealing collar will then fall into the piston groove.
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