Brake Fluid Pump: Service and Repair

Pump - Pre-Charge

Service Repair No - 70.25.17

Remove
1. Remove front wheel arch liner.





2. Remove nut securing alarm sounder to mounting bracket and move aside.
3. Position container to collect fluid spillage.

CAUTION: Brake fluid will damage paint finished surfaces. If spilled, immediately remove fluid and clean area with water.





4. Disconnect brake pipe from master cylinder.

CAUTION: Always fit plugs to open connections to prevent contamination.





5. Disconnect feed hose.
6. Remove bolt securing pre-charge pump bracket to body.
7. Release pump from rubber mounting.
8. Disconnect multiplug.
9. Remove pump.

NOTE: Do not carry out further dismantling if component is removed for access only.





10. Noting its fitted position, remove brake pipe.
11. Release multiplug, remove 3 bolts and remove mounting bracket and cover.

Refit
1. Fit mounting bracket and cover to pre-charge pump, fit bolts and tighten to 8 Nm (6 ft. lbs.).
2. Secure multiplug.
3. Clean brake pipe unions.
4. Fit brake pipe to pump and lightly tighten union.
5. Connect multiplug.
6. Locate pre-charge pump to mounting rubbers.
7. Fit bolt securing pre-charge pump and tighten to 8 Nm (6 ft. lbs.).
8. Connect pre-charge pump pipe to master cylinder, tighten both unions to 14 Nm (10 ft. lbs.).
9. Connect master cylinder feed to pre-charge pump and tighten union to 14 Nm (10 ft. lbs.).
10. Position alarm sounder to bracket, fit nut and tighten to 8 Nm (6 ft. lbs.).
11. Fit front wheel arch liner.
12. Bleed brakes using T4.