34 11 552 Overhauling left or right front brake caliper (brake caliper removed)
For Special Tool identification, see BRAKES - SPECIAL TOOLS - 5-SERIES (E60) .
Special Tools Required:
- 34 1 133
Bear in mind that guide sleeves and screws come in different lengths:
- "16" brake system: two short guide sleeves with two short screws.
- "17" brake system: one long guide sleeve and one short guide sleeve with one long screw and one short screw.
- "18" brake system: two long guide sleeves with two long screws.
Take off plastic caps (1).
Unscrew guide screws (2).
Installation:
Only clean guide screws; do not grease. Check guide bolts, replace if necessary.
E65 and E66:
Tightening torque, refer to 34 11 3AZ in BRAKES - TIGHTENING TORQUES - E60 .
Dismantle brake caliper and remove brake linings.
Installation:
Press brake lining fully outwards and insert spring (4).
Carefully force piston out through connection bore with compressed air.
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.
Press on dust protection sleeve evenly up to stop with special tool 34 1 133.
Installation:
The area between dust protection sleeve and brake caliper housing must be kept dry so as to ensure correct seating for the dust protection sleeve.
Keep Ate brake cylinder paste or brake fluid away from this area.
Make sure dust protection sleeve is correctly seated on piston.