Only bleeding the rear wheel circuit d Warning: Check that the brake fluid in the hose does not foam. If the fluid foams, proceed as described in the sec- tion on bleeding and changing brake fluid in rear wheel circuit. ( a 00.44) – Draw off the old brake fluid from the wheel-circuit reservoir. – Remove rear brake pads, force back the brake pistons and secure the pistons in this position. – Wrap a cloth around the rear brake caliper. • Pump brake fluid through the system until it is clear and free from air bubbles. • Close the bleed screw. • Release the brake and switch off the ignition. • Disconnect silicon hose, BMW No. 34 1 561 , from bleed screw and drain the hose. • Remove cap, BMW No.
34 2 541 . 34 1 561 34 2 541 e Attention: After changing and/or bleeding the brakes, always top up the fluid in the wheel-circuit reservoir to the correct level in accordance with the instructions. R28000230 • Fill rear wheel-circuit reservoir with brake fluid in accordance with instructions. ( a 00.46) • Check operation of the brake system with the ig- nition switched on. • Fill rear wheel-circuit reservoir with brake fluid up to “MAX” mark and install cap, BMW No. 34 2 541 . • Connect 1.5m (4.9214 ft) silicon hose, BMW No. 34 1 561 , to the bleed screw. e Attention: After all the work on the brake system has been completed, run a bleed test using the BMW MoDiTeC. L Note:
If necessary, use a cable tie to secure the bleed hose to the bleed screw. • Switch on the ignition. Brake fluid ...................................................DOT 4 L Note: After switching on the ignition, always wait for the BMW Integral ABS to complete its self-diagnosis. Do not operate the brake lever until self-diagnosis has completed. X Tightening torque: Bleed screw in rear brake caliper ................... 6 Nm Brake caliper to rear wheel drive .................. 40 Nm • Very gently press the footbrake lever until the pump just starts up. • Open the bleed screw. • Pump the brake fluid with virtually no pressure until the hose is full of brake fluid.
• Connect end of hose to cap, BMW No. 34 2 541 . • Pump the brake fluid with virtually no pressure to begin with, then vary the brake pressure. 00.47