Nissan Versa

 Sedan Service Manual

Brakes » Brake system (BR) » Brake booster and check valve
Removal and installation

REMOVAL

NOTE: When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

1. Remove brake master cylinder assembly. Refer to BR "Removal and Installation".
2. Remove vacuum hose from check valve. Refer to BR "Removal and Installation".
3. Remove and discard the clip (1) and clevis pin (2). Refer to BR "Exploded View".
4. Remove nuts on brake booster and brake pedal assembly. Refer to BR "Exploded View".
5. Remove brake booster from dash panel on engine room side.

   CAUTION: Do not deform or bend the brake tubes.

   NOTE: If removing brake booster is difficult, remove clevis from brake booster.

6. Remove check valve from brake booster.
7. Perform inspection after removal. Refer to BR "Inspection and Adjustment".

INSTALLATION

CAUTION: Do not spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it off immediately and wash with water if it gets on a painted surface.

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

• Set check valve angle (A) as shown.

(A) : 45

• Be careful not to damage brake booster stud bolt threads. If brake booster is tilted during installation, the dash panel may damage the threads.
• Do not 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 and clip during installation. Refer to BR "Inspection and Adjustment".
• Do not allow foreign matter (e.g. dust) and oils other than brake fluid to enter the reservoir tank.
• After installation, perform the air bleeding. Refer to BR "Bleeding Brake System".

  CAUTION: Do not reuse drained brake fluid.

• Check each item of brake pedal. Adjust it if the measurement value is not the standard. Refer to BR "Inspection and Adjustment".

Removal and installation

Inspection and Adjustment