34 11 552 Overhauling left or right front-brake caliper (brake caliper removed)

NOTE: Follow general instructions:
Refer to 34 00... GENERAL DATA

Take off plastic caps (1).

Unscrew guide screws (2).

Installation:

Only clean guide screws; do not grease. Check guide bolts, replace if necessary.

Tightening torque. Refer to BRAKES - TIGHTENING TORQUES .

Fig 1: Identifying Plastic Caps & Guide Screws Of Right Front-Brake Caliper

Dismantle brake caliper and remove brake linings.

Installation:

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

Fig 2: Pressing Brake Lining Fully Outwards & Inserting Spring

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

Fig 3: Placing Protective Plate In Caliper Recess

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

Fig 4: Identifying Guide Sleeves