Nissan Frontier D40. Manual - part 69

BR-32

< ON-VEHICLE REPAIR >

BRAKE TUBE AND HOSE

2.

While depressing brake pedal under a force of 785 N (80 kg-f, 177 lb-f) with engine running for approxi-
mately 5 seconds, check each part for fluid leaks.

BRAKE MASTER CYLINDER

BR-33

< ON-VEHICLE REPAIR >

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BRAKE MASTER CYLINDER

Removal and Installation

INFOID:0000000005272481

Brake Master Cylinder

CAUTION:

Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately. 

REMOVAL

1.

Drain the brake fluid. Refer to 

BR-21, "Drain and Refill"

.

2.

Disconnect the harness connectors for the fluid level sensor and fluid pressure sensor.

3.

Disconnect the brake pipes from the master cylinder assembly.

4.

Remove brake pipes from the ABS actuator and electric unit (control unit).

5.

Remove the master cylinder assembly nuts and discard.

AWFIA0462GB

1.

Reservoir cap

2.

Strainer

3.

Fluid level sensor

4.

Reservoir tank

5.

Grommet

6.

Restriction washer

7.

Master cylinder sub-assembly

8.

Fluid pressure sensor

9.

O-ring

10. Brake  booster

11.

Pin

A.

PBC (Poly Butyl Cuprysil) grease 
or silicone based grease

B.

Brake fluid

R.

Rubber grease

Front

BR-34

< ON-VEHICLE REPAIR >

BRAKE MASTER CYLINDER

CAUTION:

Discard the nuts, do not reuse.

6.

Remove the master cylinder assembly.

7.

Remove the fluid pressure sensor if required.

INSTALLATION

Installation is in the reverse order of removal.
• Use new master cylinder assembly nuts for installation.

CAUTION:

Do not reuse the master cylinder assembly nuts.

• Refill the brake fluid and bleed the air. Refer to 

BR-21, "Bleeding Brake System"

.

CAUTION:

• Refill using recommended brake fluid. Refer to 

BR-21, "Drain and Refill"

.

• Do not reuse drained brake fluid.

• Adjust the brake pedal. Refer to 

BR-19, "Inspection and Adjustment"

.

• Apply silicon grease to the brake booster at position (A) as shown,

be sure the O-ring is in proper position when installing the master
cylinder assembly to the brake booster.

JPFIA0013ZZ

BRAKE BOOSTER

BR-35

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BRAKE BOOSTER

Removal and Installation

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Brake Booster and Vacuum Hose

REMOVAL 

CAUTION:

• Be careful not to deform or bend brake piping while removing and installing brake booster.
• Replace clevis pin if it is damaged.
• Be careful not to damage brake booster stud bolt threads. If brake booster is tilted or inclined during

installation, dash panel may damage the threads.

• Attach the check valve in the correct direction.

1.

Remove the ABS actuator and electric unit (control unit). Refer to 

BRC-71, "Removal and Installation"

(type 1), 

BRC-180, "Removal and Installation"

 (type2), 

BRC-300, "Removal and Installation"

 (type 3).

AWFIA0463GB

1.

Brake booster vacuum hose

2.

Brake booster vacuum check valve 3.

Brake booster

4.

Lock nut

5.

Gasket

6.

Spacer block

Front