Brake Fluid Pump: Service and Repair
REMOVENOTE: Read the notes relating to the ABS system bleed procedure before commencing this operation.
1. Discharge the hydraulic accumulator by operating the brake pedal approximately 20 times, until the pedal goes hard.
2. Open the bonnet. Place suitable absorbent material around the reservoir area to catch any spilt fluid.
3. Remove the low pressure hose to pump securing clip, disconnect the hose, remove and discard the O-ring.
4. Route the end of the hose into a container.
5. Drain the fluid.
6. Disconnect the pressure warning switch and motor multi plugs.
7. Disconnect the bundy pipe at the motor/pump unit end.
8. Remove the motor/pump special mounting bolt.
9. Displace and remove the motor/pump unit.
10. Slacken off and remove the accumulator. Remove and discard the O-ring seal.
11. Remove the pressure warning switch. Clean the surrounding area.
REFIT
1. Fit a new O-ring to the pressure warning switch. Fit the pressure warning switch to the new motor/pump unit.
2. Fit a new O-ring to the accumulator. Fit and tighten the accumulator to:
Accumulator to pump 4O-46 Nm
3. Fit the assembly to the vehicle, route the harness through the mounting bracket.
4. Fit and tighten a new special bolt to:
Pump/motor mounting bolt 7-9 Nm
5. Fit a new O-ring to the low pressure hose, fit the hose and retaining clip.
6. Reconnect the bundy pipe at the motor/pump unit end.
7. Reconnect the multi plugs.
8. Bleed the ABS hydraulic system.
9. Switch on the ignition.
10. When the accumulator is charged to the upper cut-out point, top up the reservoir to the maximum level.
11. Fit and tighten the filler cap.