Caution! All work on the ABS control unit must be carried out by an authorised BMW workshop.
Remove the rear frame. See Group 46.
Remove front brake lines.
Caution!
- If brake fluid escapes, it may damage paint.
- Line connections must be protected against dirt penetration; seal or cover ends of lines and ports.
Disconnect rear brake line from control unit.
Remove screws securing the control unit to the holder.
Disconnect plug for control unit (3).
Carefully push the rear brake lines to one side.
Lift the control unit, pull it to the rear and remove.
Installation is the reverse of the removal procedure: pay particular attention to the following.
Caution!
- Top up brake fluid and bleed brake system.
- Operate brake several times until brake pads rest on disc.
Tightening torque:
- Brake line to ABS control unit: 18 Nm
- Brake line at interface to brake hose: 18 Nm
- Expansion tank to radiator: 9 Nm
- ABS control unit to holder: 21 Nm