Nissan Pathfinder (2011 year). Manual — part 90
REAR DISC BRAKE
BR-47
< REMOVAL AND INSTALLATION >
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3. Partially drain the brake fluid. Refer to
4. Remove lower sliding pin bolt using power tool and swing the caliper body up to access the brake pads.
5. Support the caliper body with a suitable wire to avoid pulling on the rear brake hose.
6. Remove the rear inner and outer brake pads, shims and retainers from the torque member.
INSTALLATION
1. Attach shims to the brake pads.
2. Apply Molykote 7439 grease (A) to the pad retainers as shown.
3. Attach pad retainer to torque member, then install brake pad and
shim assemblies.
CAUTION:
When attaching pad retainer, attach it firmly so that it is
flush with torque member, as shown.
4. Using a suitable tool push piston into caliper body.
CAUTION:
By pushing in piston, brake fluid returns to master cylinder reservoir tank. Watch the level of the
brake fluid in reservoir tank.
NOTE:
Use a suitable tool to make it easier to push the piston into the caliper body.
5. Remove the suitable wire then swing the caliper body down over the brake pad assemblies.
6. Install the lower sliding pin bolt and tighten to specification. Refer to
BR-48, "Exploded View of Brake Cal-
7. Check the brakes for drag.
8. Inspect the brake fluid level and refill if necessary. Refer to
.
9. Install the rear wheel and tire. Refer to
Brake Burnishing
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Burnish brake contact surface according to the following procedure after refinishing or replacing rotors, after
replacing pads, or if a soft pedal occurs at very low mileage.
CAUTION:
Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1. Drive the vehicle on a straight smooth road at 50 km/h (31 MPH).
2. Use medium brake pedal/foot effort to bring the vehicle to a complete stop from 50 km/h (31 MPH). Adjust
brake pedal/foot pressure such that vehicle stopping time equals 3 to 5 seconds.
3. To cool brake system, drive the vehicle at 50 km/h (31 MPH) for 1 minute without stopping.
4. Repeat steps 1 to 3, 10 times or more to complete the burnishing procedure.
AWFIA0039ZZ
PFIA0273E
2011 Pathfinder
BR-48
< REMOVAL AND INSTALLATION >
REAR DISC BRAKE
Exploded View of Brake Caliper
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Rear Disc Brake Caliper
WARNING:
Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of airborne
particles or other materials.
CAUTION:
• While removing caliper 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 caliper body. In this case, hang caliper body with a wire so as not to stretch the brake
hose.
• Do not damage the piston boot.
• If any shim is subject to serious corrosion, replace it with a new one.
• Always replace shim and shim cover as a set when replacing brake pads.
• Keep rotor free from grease and brake fluid.
• Burnish the brake contact surface after refinishing or replacing rotors, after replacing pads, or if a
soft pedal occurs at very low mileage. Refer to
.
Removal and Installation of Brake Caliper and Disc Rotor
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REMOVAL
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
1. Remove the rear wheel and tire. Refer to
2. Remove master cylinder reservoir cap.
AWFIA0471GB
1.
Union bolt
2.
Brake hose
3.
Copper sealing washers
4.
Sliding pin bolt
5.
Cap
6.
Bleed valve
7.
Caliper body
8.
Sliding pin
9.
Piston seal
10. Piston
11. Piston boot
12. Torque member
13. Torque member bolt
14. Sliding pin boot
R.
Rubber grease
2011 Pathfinder
REAR DISC BRAKE
BR-49
< REMOVAL AND INSTALLATION >
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3. Remove the union bolt then disconnect the brake hose and dis-
card the copper sealing washers.
CAUTION:
Do not reuse copper sealing washers.
4. Remove the sliding pin bolts and remove the caliper body from
torque member.
5. Remove the brake pads, shims and retainers from the torque member.
6. Remove the torque member bolts and remove the torque member.
7. Remove the disc rotor. If reusing the disc rotor, apply a matching
mark as shown for installation.
CAUTION:
Put matching marks on the wheel hub assembly and disc
rotor, if reusing the disc rotor.
INSTALLATION
1. Install the disc rotor. If reusing the disc rotor, align the matching
marks as shown for installation.
CAUTION:
Align the matching marks on the wheel hub assembly and
disc rotor, if reusing the disc rotor.
2. Install torque member and tighten the torque member bolts to specification. Refer to
.
3. Install the brake pads, shims and retainers on the torque member. Refer to
4. Install caliper body and sliding pins, then tighten the sliding pin bolts to the specified torque. Refer to
48, "Exploded View of Brake Caliper"
CAUTION:
When installing the caliper body to the torque member, wipe any oil off of the knuckle, washers
and caliper body attachment surfaces.
LFIA0211E
SDIA2638E
SDIA2638E
2011 Pathfinder
BR-50
< REMOVAL AND INSTALLATION >
REAR DISC BRAKE
5. Install brake hose by aligning with the protrusion on caliper
body, then install new copper sealing washers (1) and union bolt
(A). Tighten union bolt (A) to specified torque. Refer to
.
CAUTION:
Do not reuse copper sealing washers.
6. Refill with new brake fluid as necessary and bleed brake system. Refer to
CAUTION:
• Refill with new brake fluid.
• Do not reuse drained brake fluid.
7. Install the rear wheel and tire. Refer to
AWFIA0795ZZ
2011 Pathfinder
BRAKE MASTER CYLINDER
BR-51
< UNIT DISASSEMBLY AND ASSEMBLY >
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UNIT DISASSEMBLY AND ASSEMBLY
BRAKE MASTER CYLINDER
Disassembly and Assembly
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VQ40DE MODELS
VK56DE MODELS
1.
Reservoir cap
2.
Strainer
3.
Fluid level sensor
4.
Reservoir tank
5.
Grommet
6.
Restriction washer
7.
Master cylinder sub-assembly
8.
Pin
9.
O-ring
10. Brake booster
A.
PBC (Poly Butyl Cuprysil) grease
or silicone based grease
B.
Brake fluid
R.
Rubber grease
Front
AWFIA0810GB
2011 Pathfinder
BR-52
< UNIT DISASSEMBLY AND ASSEMBLY >
BRAKE MASTER CYLINDER
VK56DE
DISASSEMBLY
CAUTION:
• Master cylinder sub-assembly cannot be disassembled.
• Remove reservoir tank only when absolutely necessary.
• While working, cover the primary piston rod with a cloth to prevent it from being damaged.
• Never use mineral oils such as kerosene, gasoline during the cleaning and assembly process.
• Do not drop parts. If a part is dropped, do not use it.
AWFIA0864GB
1.
Reservoir cap
2.
Strainer
3.
Fluid level sensor
4.
Reservoir tank
5.
Grommet
6.
Restriction washer
7.
Master cylinder sub-assembly
8.
Pin
9.
O-ring
10. Brake booster
11. Front pressure sensor
12. Rear pressure sensor
A.
PBC (Poly Butyl Cuprysil)
grease or silicone based
grease
B.
Brake fluid
R.
Rubber grease
Front
2011 Pathfinder
BRAKE MASTER CYLINDER
BR-53
< UNIT DISASSEMBLY AND ASSEMBLY >
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1. Secure the flange of the master cylinder sub-assembly in a vise.
CAUTION:
• Use copper plates or a cloth to cover the flange before
securing it in the vise.
• When securing the master cylinder sub-assembly in a
vise, be sure not to over-tighten the vise.
2. Remove the pin and pull the reservoir tank off of the master cylinder sub-assembly.
3. Remove the grommets from the master cylinder sub-assembly body.
CAUTION:
Do not reuse grommets.
4. Remove the restriction washer from the master cylinder sub-assembly body.
CAUTION:
Do not reuse restriction washer.
5. Remove the fluid level sensor.
6. Remove the fluid pressure sensor (if equipped).
CAUTION:
Do not reuse front pressure sensor and rear pressure sensor.
ASSEMBLY
Assembly is in the reverse order of disassembly.
CAUTION:
• Master cylinder sub-assembly cannot be disassembled.
• Remove reservoir tank only when absolutely necessary.
• While working, cover the primary piston rod with a cloth to prevent it from being damaged.
• Never use mineral oils such as kerosene, gasoline during the cleaning and assembly process.
• Do not drop parts. If a part is dropped, do not use it.
BRA0558D
2011 Pathfinder
BR-54
< UNIT DISASSEMBLY AND ASSEMBLY >
FRONT DISC BRAKE
FRONT DISC BRAKE
Exploded View of Brake Caliper
INFOID:0000000006245735
Front Disc Brake Caliper
WARNING:
Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of airborne
particles or other materials.
CAUTION:
• While removing caliper 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 caliper body. In this case, hang caliper body with a wire so as not to stretch the brake
hose.
• Do not damage the piston boot.
• If any shim is subject to serious corrosion, replace it with a new one.
• Always replace shim and shim cover as a set when replacing brake pads.
• Keep rotor free from grease and brake fluid.
• Burnish the brake contact surface after refinishing or replacing rotors, after replacing pads, or if a
soft pedal occurs at very low mileage. Refer to
.
Disassembly and Assembly
INFOID:0000000006245736
DISASSEMBLY
AWFIA0467GB
1.
Sliding pin bolt
2.
Caliper body
3.
Piston seal
4.
Piston
5.
Piston boot
6.
Sliding pin
7.
Sliding pin boot
8.
Torque member bolt
9.
Torque member
10. Bleed valve
11. Cap
12. Copper sealing washers
13. Union bolt
14. Front brake hose
R.
Rubber grease
2011 Pathfinder
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