Only bleeding the front 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 front wheel circuit. ( a 00.40) – Draw off the old brake fluid from the wheel-circuit reservoir. – Remove left and right brake pads, force back the brake pistons and secure the pistons in this po- sition. – Wrap cloths around the left and right brake cali- pers. e Attention: Integral brakes, the rear brake must be ready for use. • Pump brake fluid through the system until it is clear and free from air bubbles. • Close the bleed screw. • Release the brake and disconnect silicon hose, BMW No.
34 1 561 . • Fill front 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 of the right brake caliper. • The procedure for bleeding the right brake cali- per is the same as that for the left caliper. • 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.
R28000220 • Fill front wheel-circuit reservoir with brake fluid up to “MAX” mark and install cap, BMW No. 34 2 541 . • Connect 1.5 m (4.9214 ft) silicon hose, BMW No. 34 1 561 , to the bleed screw of the left brake caliper. • Fill front wheel-circuit reservoir with brake fluid in accordance with instructions. ( a 00.42) • Check operation of the brake system with the ig- nition switched on. L Note: If necessary, use a cable tie to secure the bleed hose 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. • Switch on the ignition. 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. Brake fluid ...................................................DOT 4 X Tightening torque: Bleed screw in front brake caliper .................. 7 Nm Grub screw in front brake caliper ................... 7 Nm • Very gently pull the handbrake 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. 00.43