Nissan Pathfinder. Manual - part 231

BR-32

< REMOVAL AND INSTALLATION >

BRAKE BOOSTER

1. Loosen lock nut (1) and adjust input rod (2) to the specified

length (B).

2. After adjustment, temporarily tighten lock nut to install booster assembly.
3. Install a new gasket between the brake booster and dash panel.

CAUTION:

Do not reuse the gasket.

4. Install the brake booster to the dash panel from the engine room side.

CAUTION:

Do not damage brake booster stud bolt threads during installation.

5. Install the four nuts to the brake booster and brake pedal assembly. Refer to 

BR-31, "Exploded View"

.

6. Install the I-Key sensor to the strut tower.
7. Connect the harness connector to the booster pressure sensor.
8. Install master cylinder assembly. Refer to 

BR-28, "Removal and Installation"

.

9. Connect vacuum hose to brake booster. Refer to 

BR-33, "Exploded View"

.

10. Install the cowl top extension. Refer to 

EXT-25, "Removal and Installation"

.

11. Install the clevis pin and snap pin to the brake pedal.
12. Install the harness clip.
13. Adjust the brake pedal. Refer to 

BR-15, "Adjustment"

.

14. Install instrument lower panel LH. Refer to 

IP-25, "Removal and Installation"

.

15. Bleed the brake system. Refer to 

BR-16, "Bleeding Brake System"

.

16. Inspect the brake booster. Refer to 

BR-10, "Inspection"

.

Length (B)

: Refer to 

BR-31, "Removal and In-

stallation"

.

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VACUUM LINES

BR-33

< REMOVAL AND INSTALLATION >

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VACUUM LINES

Exploded View

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Removal and Installation

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REMOVAL

1. Disconnect the vacuum hose from the brake booster.
2. Disconnect the vacuum hose from the engine intake manifold.
3. Disconnect clips from vacuum pipe.
4. Remove the vacuum hose assembly.

INSPECTION AFTER REMOVAL

Visual Inspection

Check for correct installation, damage and deterioration of the vacuum hoses and pipe.

Valve Air-tightness Check

• Connect a suitable tool at each end of the vacuum hose to inspect the check valve operation.

• Replace the vacuum hose with check valve if out of specification.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

1.

Clamp

2.

Vacuum hose

3.

Vacuum pipe

4.

Clip

5.

Vacuum hose

6.

Check valve

A.

To intake manifold

Front

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Vacuum applied at booster end

: Refer to 

BR-48, "Check Valve"

.

Vacuum applied at intake manifold end

: Refer to 

BR-48, "Check Valve"

.

BR-34

< REMOVAL AND INSTALLATION >

VACUUM LINES

• Because the vacuum hose contains a check valve, the vac-

uum hose must be installed in the correct position for proper

operation. Refer to the stamp on the end of the vacuum hose

to confirm correct installation. The brake booster will not

operate normally if the vacuum hose with the check valve is

installed in the wrong direction. 

• Insert the vacuum pipe into the vacuum hose at least 24 mm

(0.94 in) as shown.

• Do not use lubricating oil during installation.

SBR225B

FRONT DISC BRAKE

BR-35

< REMOVAL AND INSTALLATION >

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FRONT DISC BRAKE

BRAKE PAD
BRAKE PAD : Exploded View

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BRAKE PAD : Removal and Installation

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REMOVAL

WARNING:

Clean dust on brake caliper and brake pad with a vacuum dust collector to minimize the hazards of air-

borne particles or other material.

CAUTION:

• Do not depress the brake pedal while removing the brake pads because the pistons may pop out.

• It is not necessary to remove bolts on torque member and brake hose except for disassembly or

replacement of brake caliper. For brake pad removal, hang brake caliper with a wire so as not to

stretch brake hose.

• If brake fluid or grease adheres to the brake caliper or disc rotor, quickly wipe it off.
1. Partially drain brake fluid from the master cylinder. Refer to 

BR-16, "Drain and Refill"

.

2. Remove the front wheels and tires using power tool.
3. Remove sliding pin bolts.
4. Remove the brake caliper from the torque member. Leaving brake hose attached, reposition the brake

caliper aside with wire.

5. Remove the brake pads, shims, shim covers and pad retainers from the torque member.

CAUTION:

• Do not reuse the pad retainers.

• Do not damage the piston boot.

• Do not drop the brake pads, shims, or the shim covers.

• Note the position of components during removal to aid with installation.

INSTALLATION

1. Install the new pad retainers to the torque member.

CAUTION:

• Do not reuse the pad retainers.

1.

Brake caliper

2.

Inner shim cover

3.

Inner shim

4.

Inner pad

5.

Pad retainer

6.

Torque member

7.

Outer pad

8.

Outer shim

9.

Outer shim cover

A.

Molykote AS-880N

B.

Rubber grease

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