Nissan Pathfinder (2008 year). Manual - part 84

BRAKE PIPING AND HOSE

BR-19

< REMOVAL AND INSTALLATION >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

2.

Insert brake hose end through bracket, then secure it to bracket
with lock plate.

3.

Install brake tube to brake hose, then tighten flare nut to the
specified torque using a suitable tool.

4.

Refill brake fluid and bleed air. Refer to 

BR-9, "Bleeding Brake

System"

.

Inspection After Installation

INFOID:0000000001297437

CAUTION:

If a leak is detected at the connections, retighten it or, if necessary, replace the damaged part.

1.

Check brake lines (tubes and hoses), and connections for fluid leaks, damage, twist, deformation, contact
with other parts, and loose connections. Replace any damaged parts.

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 for fluid leaks from each part.

LFIA0238E

BR-20

< REMOVAL AND INSTALLATION >

BRAKE MASTER CYLINDER

BRAKE MASTER CYLINDER

Removal and Installation

INFOID:0000000001297439

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 brake fluid. Refer to 

BR-9, "Drain and Refill"

.

2.

Disconnect harness connectors for fluid level sensor and pressure sensor.

3.

Disconnect brake tube from master cylinder assembly.

4.

Remove master cylinder assembly nuts and master cylinder assembly.

INSTALLATION

• Installation is in the reverse order of removal.

WFIA0411E

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

⇐

Front

B.

Brake fluid

R.

Rubber grease

BRAKE MASTER CYLINDER

BR-21

< REMOVAL AND INSTALLATION >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

• Refill brake fluid and bleed air. Refer to 

BR-9, "Bleeding Brake System"

.

CAUTION:

• Refill using recommended brake fluid. Refer to 

BR-9, "Drain and Refill"

.

• Do not reuse drained brake fluid.

• Adjust brake pedal. Refer to 

BR-7, "Brake Pedal Inspection and Adjustment"

.

BR-22

< REMOVAL AND INSTALLATION >

BRAKE BOOSTER

BRAKE BOOSTER

Removal and Installation

INFOID:0000000001297442

Brake Booster

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 actuator and electric unit. Refer to 

BRC-123, "Removal and Installation"

.

2.

Remove brake piping from brake master cylinder.

3.

Remove brake master cylinder. Refer to 

BR-20, "Removal and Installation"

.

LFIA0241E

1.

Brake booster hose

2.

Brake booster vacuum check valve 3.

Brake booster

4.

Lock nut

5.

Gasket

6.

Spacer block

BRAKE BOOSTER

BR-23

< REMOVAL AND INSTALLATION >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

4.

Remove vacuum hose from brake booster. Refer to 

BR-22

.

5.

Remove brake pedal attachment snap pin and clevis pin from inside the vehicle. 

6.

Remove nuts on brake booster and brake pedal assembly.

7.

Remove brake booster assembly from dash panel.

INSTALLATION

1.

Loosen lock nut to adjust input rod length so that the length "B"
satisfies the specified value.

2.

After adjusting "B", temporarily tighten lock nut and install
booster assembly to the vehicle.
• Install a gaskets and spacer block between booster assembly

and the dash panel.

3.

Connect brake pedal with clevis of input rod.

4.

Install brake booster nuts.

5.

Install brake piping from brake master cylinder to actuator and
electric unit. Refer to 

BR-6, "Hydraulic Circuit"

.

6.

Connect vacuum hose to brake booster.

7.

Install master cylinder to booster assembly. Refer to "Removal and Installation".

8.

Adjust the height of brake pedal. Refer to 

BR-7, "Brake Pedal Inspection and Adjustment"

.

9.

Tighten input rod lock nut.

10. Refill new brake fluid and bleed air. Refer to 

BR-9, "Drain and Refill"

.

Length "B"

: 150 mm (5.91 in)

SGIA0060E

BR-24

< REMOVAL AND INSTALLATION >

VACUUM LINES

VACUUM LINES

Removal and Installation

INFOID:0000000001297443

Brake Booster Vacuum Hose

1.

Disconnect brake booster hose from hose clip mounted on bracket.

2.

Release clips and disconnect brake booster hose. 

3.

Remove check valve from brake booster.

4.

Installation is in the reverse order of removal.

CAUTION:

• Insert vacuum hose for at least 24 mm (0.94 in).
• Do not use lubricating oil during assembly.

WFIA0332E

1.

Brake booster hose

2.

Brake booster hose clip

3.

Brake booster vacuum check valve

SBR225B

FRONT DISC BRAKE

BR-25

< REMOVAL AND INSTALLATION >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

FRONT DISC BRAKE

Component

INFOID:0000000001297446

Front Disc Brake Caliper and Pads

WARNING:

Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of airborne
particles or other materials.

CAUTION:

AWFIA0077GB

1.

Sliding pin bolt

2.

Cylinder body

3.

Piston seal

4.

Piston

5.

Piston boot

6.

Sliding pin

7.

Sliding pin boot

8.

Torque member bolt

9.

Torque member

10.

Upper pad retainer

11.

Outer shim

12. Inner brake pad

13.

Outer brake pad

14. Lower pad retainer

15. Shim cover

16.

Bleed valve

17. Cap

18. Copper washers

19.

Union bolt

20. Brake hose

21. Pad return spring

B.

Brake fluid

R.

Rubber grease

⇐

: Front

BR-26

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

• While removing cylinder body never depress brake pedal because piston will pop out. 
• It is not necessary to remove bolts on torque member and brake hose except for disassembly or

replacement of cylinder body. In this case, hang cylinder body with a wire so as not to stretch brake
hose.

• Do not damage piston boot.
• Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or if a soft

pedal occurs at very low mileage. Refer to 

BR-27, "Brake Burnishing"

.

Removal and Installation of Brake Caliper and Disc Rotor

INFOID:0000000001297448

REMOVAL

1.

Remove wheel and tire using power tool.

2.

Drain brake fluid as necessary. Refer to 

BR-9, "Drain and Refill"

.

NOTE:
Do not remove union bolt unless removing cylinder body from vehicle.

3.

Remove union bolt as necessary and torque member bolts, then remove cylinder body from the vehicle.
NOTE:
• Position cylinder body aside using suitable wire, as necessary.
• When servicing brake caliper, remove sliding pin bolts and caliper from torque member.

4.

Remove torque member.

5.

Remove disc rotor.

INSTALLATION

CAUTION:

• Refill with new brake fluid. Refer to 

BR-9, "Drain and Refill"

. 

• Do not reuse drained brake fluid.

1.

Install disc rotor.

2.

Install torque member and tighten to specification. Refer to 

BR-10, "Component"

.

3.

Install sliding pin bolts, if removed.

4.

Install cylinder body, then tighten sliding pin bolts to the specified
torque. Refer to 

BR-10, "Component"

.

CAUTION:

When attaching cylinder body to the vehicle, wipe any oil
off knuckle spindle, washers and cylinder body attachment
surfaces.

5.

Install brake hose to cylinder body, if removed, then tighten
union bolt to the specified torque. Refer to 

BR-10, "Component"

.

CAUTION:

• Do not reuse copper washers for union bolt.
• Attach brake hose to cylinder body together with union

bolt and washers.

6.

Refill with new brake fluid as necessary and bleed air. Refer to 

BR-9, "Bleeding Brake System"

.

7.

Install wheel and tire. Refer to 

WT-36, "Rotation"

.

LFIA0239E

LFIA0235E