Bleeding Brake System with DSC

34 00 050 - Bleeding brake system with DSC





Necessary preliminary tasks:
- Remove lower section of microfilter housing Removing and Installing/Replacing Left or Right Microfilter Housing Lower Section.
- Read and comply with General Information. Service and Repair





Observe the filling and bleeding instructions when replacing or repairing:
- Replace
- Hydraulic unit
- Components and connecting lines which are fitted between these assemblies.
Connect bleeder unit with max. 2 bar filling pressure.
A second person is needed to help carry out this work.





Important!
Check relevant Operating Instructions for each device.
Charging pressure should not exceed 2 bar.

- Connect BMW Diagnosis and Information System (DIS).
- Select path: Service functions - Chassis/Suspension - Slip control systems - Bleeding procedure.
- Connect bleeder unit to expansion tank and switch on.





Flushing brake system completely
Connect bleeder hose with collecting tray to bleeder valve on rear right brake caliper.
Open bleeder valve and purge until clear, bubble-free brake fluid emerges.
Close bleed valve.
Follow same procedure on rear left, front right and front left wheel brake.





Bleeding rear-axle brake circuit
Connect bleeder hose with collecting tray to bleeder valve on rear right brake caliper.
Close bleeder valve.
Run through bleeding routine with BMW Diagnosis and Information System (DIS) with bleeder valve open.
After completing routine, press brake pedal 5 times to floor, clear and bubble-free brake fluid must flow out.
Close bleed valve.
Repeat procedure at rear left.





Bleeding front-axle brake circuit
Connect bleeder hose with collecting tray to bleeder valve on front right brake caliper.
Close bleeder valve.
Run through bleeding routine with BMW Diagnosis and Information System (DIS) with bleeder valve open.
After completing routine, press brake pedal 5 times to floor, clear and bubble-free brake fluid must flow out.
Close bleed valve.
Repeat procedure at front left.





Switch off brake fluid changer and remove from expansion tank.
Check brake fluid level. If necessary, top up/draw off to max. level.
Close expansion tank.

Note:
Pay attention to rubber seal (1) in sealing cap.