34 00 050 Bleeding Brake System With DSC: Notes
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Necessary Preliminary Tasks:
- Read and comply with General Information. Refer to 34 00 ... GENERAL INFORMATION .
- Remove air duct from microfilter on left. Refer to 64 31 031 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER AIR DUCT (AUTOMATIC A/C HIGH) .
Observe safety instructions on raising the vehicle. Refer to 00..... LIFTING VEHICLE WITH A LIFTING PLATFORM .
Observe filling and bleeding instructions when replacing or repairing:
- Brake master cylinder.
- Hydraulic unit.
- Components and connecting lines which are fitted between these assemblies.
- Precharging pump.
After work has been carried out on the precharging pump, only the front-axle brake circuit has to be bled. Before flushing the brake system, activate the precharging pump once with the Diagnosis and Information System (DIS) (bleeder unit connected with max. 2 bar filling pressure).
- Connect BMW Diagnosis and Information System (DIS).
- Call up service function for bleeding DSC hydraulics.
- Connect bleeder unit to expansion tank and switch on.
NOTE:
Check relevant Operating Instructions for each device. Charging pressure should not exceed 2 bar.