Brake Master Cylinder Replacement

Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water.

NOTE: The illustrations show LHD type, RHD type is similar.

1.LHD type: Remove the air cleaner: R18A1 engine model, K20Z2 engine model.

2.RHD type: Remove the cowl cover and under-cowl panel.

3.Remove the reservoir cap and brake fluid from the master cylinder reservoir with a syringe.

4.Disconnect the brake fluid level switch connector (A).


5.Remove the reservoir tank mounting bolt (B).

6.Disconnect the brake lines (A) from the master cylinder (B). To prevent spills, cover the hose joints with rags or shop towels.


7.Remove the master cylinder mounting nuts (C) and washers (D).

8.Remove the master cylinder from the brake booster (E). Be careful not to bend or damage the brake lines when removing the master cylinder.

9.Remove the rod seal (F) from the master cylinder.

NOTE: During installation, set a new rod seal onto the master cylinder with its grooved side (G) toward the master cylinder.

10.Install the master cylinder in the reverse order of removal, and note these items:

11.Bleed the brake system.

12.Spin the wheels to check for brake drag.