Front

Special Tools Required:
^ 34 1 131

Note: Use suitable repair kit.





Take off plastic caps (1).
Unscrew guide bolts (2).

Installation:
Only clean guide screws; do not grease. Check guide bolts, replace if necessary.
Tightening torque: refer to Specifications.





Dismantle brake caliper and remove brake linings.

Installation:
Press brake lining fully outwards and insert spring (4).

Warning!: In the following work step, large forces occur at the brake caliper piston (up to more than 2800 N!). Risk of injury!





Press out piston with compressed air applied through connection bore.

To protect piston, place a protective plate (e.g. hard wood or hard felt) in caliper recess.

Do not grip piston with fingers - risk of trapping!





Check guide sleeves (5), fitting repair-kit guide sleeve if necessary.





Remove sealing ring carefully with a plastic needle.
Clean cylinder bores and parts with alcohol and dry with compressed air. Thoroughly inspect cylinder bore, piston and flange surfaces. Machining of cylinders and pistons is not permitted.





Installation:
Apply a light coat of ATE brake cylinder paste to cylinder bore, piston and sealing sleeve.

Install sealing cover in rear annular groove of cylinder bore. Press in piston with a hardwood board.

Caution: Do not tilt piston.





Press on dust cover evenly up to stop with special tool 34 1 131.

Installation:
Area between dust cover and brake caliper housing must be kept dry so as to ensure correct seating for dust cover.

Keep ATE brake cylinder paste or brake fluid away from this area.

Ensure proper seating of dust cover on piston.