REMOVAL

1.Remove the brake master cylinder cover and hood ledge cover LH. Refer to Exploded View.

2.Remove cowl top cover. Refer to Exploded View.

3.Remove master cylinder assembly. Refer to Exploded View (GT-R certified NISSAN dealer).
■ CAUTION ■

- Depress the brake pedal several times to release the vacuum pressure from the brake booster. Then remove the master cylinder assembly.
- Never depress the brake pedal after the master cylinder assembly is removed.
- The piston of the master cylinder assembly is exposed. Never damage it when removing the master cylinder.
- The piston may drop off when pulled out strongly. Never hold the piston. Hold the cylinder body when handling the master cylinder assembly.

4.Remove vacuum hose from brake booster. Refer to Exploded View (GT-R certified NISSAN dealer).

5.Remove snap pin (1) and clevis pin (2).

6.Disconnect the brake tube from the ABS actuator electric unit (control unit). Refer to Exploded View.

7.Remove the clip from the brake tube. Refer to Exploded View.

8.Remove the brake tube [between ABS actuator electric unit (control unit) and master cylinder]. Refer to Exploded View.

9.Remove the relay box and bracket.

10.Remove brake booster, spacer and gasket.
■ CAUTION ■
Never deform or bend the brake tubes.

INSTALLATION
Note the following, and install in the reverse order of removal.

- Be careful not to damage brake booster stud bolt threads. If brake booster is tilted during installation, the dash panel may damage the threads.
- Never deform or bend the brake tubes when installing the brake booster.
- Always use a new gasket between the brake booster and the dash panel.
- Replace the clevis pin if it is damaged. Refer to Inspection and Adjustment (GT-R certified NISSAN dealer).
- Never allow foreign matter (e.g. dust) and oils other than brake fluid to enter the reservoir tank.
- Since brake fluid is susceptible to deterioration from moisture, discard brake fluid remaining in the container.

- After installation, perform the air bleeding. Refer to Bleeding Brake System.
  ■ CAUTION ■
  Never reuse drained brake fluid.