Flush and vent the rear axle brake circuit
Prerequisite
- Vehicles with fixed caliper braking system.
NOTE:
TECHNICAL INFORMATION
Use only BMW-approved brake fluids.
Use only BMW-approved brake fluids.
Preliminary work
- Refer to DIFFERENTIATION OF THE BRAKE CALIPERS OF DIFFERENT EQUIPMENT SPECIFICATION .
- Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
- Refer to CONNECTING THE BLEEDER UNIT FOR THE BRAKE FLUID .
- Refer to DISTINGUISHING THE CALIPERS FROM DIFFERENT MANUFACTURERS .
NOTE:
Description is for right component only. The procedure on the left side is identical.
- Begin with the flushing at the right rear .
- Connect the vent hose with the collecting vessel to the bleed valve (1) on rear right brake caliper.
- Open the bleed valve (1) and purge it until clear, bubble-free brake fluid emerges.
- Close bleed valve.
TIGHTENING TORQUE SPECIFICATION
| Bleed valve of the rear brake caliper, made of aluminum and not painted | ||
| Bleed valve | tightening torque | 10 Nm |
TIGHTENING TORQUE SPECIFICATION
| Bleed valve of the rear brake caliper, made of steel and always painted | ||
| Bleed valve | tightening torque | 17 Nm |
- Carry out the same procedure on the rear left wheel brake.