34 00 EMF Additional brake bleeding procedure

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NOTE: This bleeding procedure serves to eliminate residual air in the brake system. Under certain circumstances it may not be possible to remove the entire residual air from the EMF brake calipers by means of the normal bleeding procedure. In these cases, the following procedure applies.

Connect brake fluid changer to expansion tank and switch on.

NOTE:

Check relevant Operating Instructions for each device.

Charging pressure should not exceed 2 bar.

Fig 1: Connecting Brake Fluid Changer To Expansion Tank

G00493500

Courtesy of BMW OF NORTH AMERICA, INC.

Close bleeder valve. Flush brake caliper in installation position. Close bleed valve.

Fig 2: Flushing Brake Caliper In Installation Position

G00493501

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew guide bolts (1). If necessary, grip at hexagon head (2). Remove brake caliper (3).

Installation: Replace guide screws. Tightening torque, see 34 21 4AZ in 34 21 REAR BRAKE .

Fig 3: Removing Brake Caliper

G00493502

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection on EMF actuator and disengage cable from cable tie. Turn brake caliper so that EMF actuator points downwards. Open bleed valve and flush brake caliper. Close bleed valve.

Fig 4: Turn Brake Caliper So EMF Actuator Points Downwards

G00493503

Courtesy of BMW OF NORTH AMERICA, INC.

Turn brake caliper so that EMF actuator points upwards. Open bleed valve and flush brake caliper. Close bleed valve. Reinstall brake caliper in installation position and flush again.

Fig 5: Turn Brake Caliper So EMF Actuator Points Upwards

G00493504

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 6: Pay Attention To Rubber Seal (1) In Sealing Cap

G00493505

Courtesy of BMW OF NORTH AMERICA, INC.