Caution! Work on the ABS unit must be performed by an authorised BMW workshop.
Removing the ABS unit
Remove fuel tank.
Disconnect ABS brake lines (1) from ABS unit.
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.
Hold the front brake lever against the handlebar grip with a rubber band (to close the brake fluid feed bore).
Caution!
- Switch off ignition.
- Disconnect earth (ground) lead from battery.
- Insulate earth (ground) lead.
Remove cover (2) from ABS control unit, press the lock in with a screwdriver and pull the cover up.
Disconnect cables (3).
Pull off 2-pin plug (4).
Pull off the central plug (5).
Remove the ABS unit (6).
Installing the ABS unit
Install the ABS unit (6).
Connect the central plug (5).
Caution! Make sure the cable is not at an angle, or its insulation may be damaged.
Reconnect the 2-pin plug in the correct position, pushing the two halves fully together, and press the two wires into the center (smaller) cable entries.
Push the two plugs for the connecting cable/wir-ing harness onto the threaded pins with the crimp at the front.
Press the two cables into the remaining free cable entries.
Tighten the nuts.
Caution! Always use new self-locking nuts.
Tightening torque:
- Battery -/M5 — 3.5 Nm
- Battery +/M4 — 3 Nm
Install a new cover.
Caution! When sliding the cover on, make sure that all cables are correctly located in their cable entries. Scrap the old cover.
Screw ABS brake lines (1) to ABS unit.
Fill and bleed the brake system.
Install the fuel tank.
Tightening torque:
- ABS unit to holder — 8 Nm
- ABS unit to battery carrier (Torx) — 5 Nm
- Brake line to ABS unit — 18 Nm
- Bleed screw on ABS unit — 14 Nm