Brake Fluid Pump: Service and Repair

Fig. 1 Exploded View of Hydraulic Unit:

Refer to Figure 1 and follow these steps:
1. Depressurize the hydraulic accumulator
2. Remove the return hose from the pump and drain the reservoir fluid into a container. Do not re-use this fluid.
3. Remove the hydraulic accumulator from the pump
4. Remove the high-pressure hose from the pump
5. Disconnect the pump and pressure switch electrical connectors.
6. Remove the pump mounting bolt (and washer), using a 13 mm socket and driver.
7. Remove the pump from the hydraulic unit by sliding it from its mounting pin.
8. Transfer these parts to the replacement pump:
^ The return hose fitting with its O-ring seal and retainer clip.
^ The three pump insulators and mounting bolt sleeve
^ The pressure switch with its O-ring seal
9. Install the pump by sliding it onto its mounting pin.
10. Install the pump mounting bolt (and washer), tightening it to 8 N-m (70 lb. in.) torque.
11. Attach the electrical connectors for the pump and pressure switch.
12. Install the high-pressure hose with its O-ring, seals.
13. Install the hydraulic accumulator with its O-ring seal.
14. Install the return hose. Add fluid to the reservoir.
15. Charge the hydraulic accumulator and check for fluid leaks.
16. Check the reservoir fluid level.