F BRAKES

PRECAUTIONS

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System (SRS), including "AIR BAG" and "SEAT BELT PRE-TENSIONER", works with the front seat belt to reduce the risk or severity of injury in certain collisions. It uses seat belt switch inputs and dual stage front air bag modules. The SRS system may deploy only one front air bag depending on collision severity and occupant restraint status. Service information for the SRS system is detailed in the SRS and SB sections of this Service Manual.

WARNING:

• To prevent rendering the SRS inoperative, which could increase the risk of personal injury or death in a collision, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury from unintentional system activation. Refer to the SRS section for removal of the Spiral Cable and Air Bag Module.
• Do not use electrical test equipment on any SRS circuit unless specified in this Service Manual. SRS wiring harnesses are identified by yellow and/or orange harnesses or connectors.

Precautions for Brake System

• Recommended fluid: Genuine NISSAN Super Heavy Duty Brake Fluid or equivalent. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".
• Do not reuse drained brake fluid.
• Avoid splashing brake fluid on painted areas.
• Use clean brake fluid to clean master cylinder, disc brake caliper, and wheel cylinder parts.
• Do not use mineral oils such as gasoline or kerosene, as they will damage rubber parts of the hydraulic system.
• Use a flare nut wrench when removing and installing brake tubes.
• Always check tightening torque when installing brake lines.
• Before working, turn the ignition switch to OFF and disconnect ABS actuator and electric unit connectors, or battery terminals.
• Burnish brake contact surfaces after refinishing or replacing drums or rotors, after replacing pads or linings, or if a soft pedal occurs at very low mileage. Refer to BR-27, "BRAKE BURNISHING PROCEDURE".

WARNING:

Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.

PREPARATION

Special Service Tool

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.

BRAKE PEDAL

Inspection and Adjustment

1. Inspect the brake pedal free height "H" from dash lower using Tool.
2. Adjust the height referring to the following specifications.

ADJUSTMENT

1. Loosen the stop lamp switch and ASCD switch by turning 45° counterclockwise.
2. Loosen lock nut on the input rod, then turn input rod to adjust the pedal to specified height. When finished adjusting, tighten lock nut.

CAUTION:

Make sure that the screw portion of the end of input rod is located inside the clevis.

Lock nut: 18.6 N·m (1.9 kg-m, 14 ft-lb)

3. With the pedal pulled up and held by hand, press the stop lamp switch and the ASCD switch in until threaded ends contact pedal arm.
4. With the threaded ends of the stop lamp switch and ASCD switch contacting the pedal arm, turn the switches 45° clockwise to lock in place.

CAUTION:

Make sure that the gap "C1 or C2" between the rubber stops and switch ends are within specification.

5. Check the pedal play.

CAUTION:

Make sure that the stop lamp goes off when the pedal is released.

6. Start the engine and check the height of the brake pedal when depressing it.

Removal and Installation

COMPONENTS

Component List:

• 1. Brake pedal assembly
• 2. Snap pin
• 3. Clip
• 4. Stop lamp switch
• 5. Pedal pad
• 6. Clevis pin
• 7. ASCD cancel switch

REMOVAL

WARNING:

Do not deform the brake tube.

CAUTION:

• Do not disassemble the brake pedal assembly.
• Avoid damage from dropping the brake pedal assembly during handling.
• Keep the brake pedal assembly away from water.
• Remove the lower driver instrument panel. Refer to IP-10, "Removal and Installation".
• Remove the stop lamp switch and ASCD switch from the pedal assembly.
• Remove snap pin and clevis pin from the clevis of the brake booster.
• Remove mounting nuts and the pedal assembly.

BRAKE FLUID

On-board Inspection

LEVEL CHECK

• Check that the brake fluid level in the reservoir tank is within specification, between the MAX and MIN lines.
• Visually check around the reservoir tank for fluid leaks.
• If fluid level is excessively low, check the brake system for leaks.
• If the brake warning lamp remains illuminated after the parking brake pedal is released, check the brake system for any brake fluid leaks.

Drain and Refill

CAUTION:

• Refill with new brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".
• Do not reuse drained brake fluid.
• Do not let brake fluid splash on painted surfaces of the body, as it may damage the paint. If splashed, immediately wipe off the area and wash with water.
• Before servicing, disconnect actuator connector or battery negative cable.

1. Connect a vinyl tube to each bleed valve.
2. Depress brake pedal, loosen each bleed valve, and gradually remove brake fluid.
3. Ensure no foreign material is in the reservoir tank, and refill with new brake fluid.
4. Rest foot on brake pedal. Loosen bleed valve. Slowly depress pedal until it stops. Tighten bleed valve. Release brake pedal. Repeat this process a few times, pausing to add new brake fluid to the master cylinder. Continue until new brake fluid flows out.
5. Bleed air from the brake system. Refer to BR-10, "Bleeding Brake System".

Bleeding Brake System

CAUTION:

While bleeding, monitor the master cylinder brake fluid level.

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector or battery negative cable.
2. Connect a vinyl tube to the rear right bleed valve.
3. Fully depress brake pedal 4 to 5 times.
4. With brake pedal depressed, loosen bleed valve to let air out, then tighten it immediately.
5. Repeat steps 3 and 4 until no more air comes out.
6. Tighten bleed valve to the specified torque. Refer to BR-22, "Components" (front disc brake), BR-28, "Components" (rear disc brake).
7. Perform steps 2 to 6 at each wheel, with the master cylinder reservoir tank filled at least halfway. Bleed air from the front left, rear left, and front right bleed valves, in that order.

BRAKE PIPING AND HOSE

Hydraulic Circuit

CAUTION:

• All hoses and piping (tubes) must be free from excessive bending, twisting, and pulling.
• Ensure no interference with other parts when turning the steering wheel clockwise and counterclockwise.
• The brake piping is a critical safety part. If a brake fluid leak is detected, disassemble the parts and replace any damaged part if necessary.
• Be careful not to splash brake fluid on painted areas, as it may cause paint damage. If brake fluid is splashed on painted areas, wash it away with water immediately.
• Do not bend or twist brake hose sharply, or pull it strongly.
• When removing components, cover connections to prevent dirt, dust, or other foreign matter from entering.
• Refill with new brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".
• Do not reuse drained brake fluid.

Removal and Installation of Front Brake Piping and Brake Hose

REMOVAL

1. Drain brake fluid. Refer to BR-9, "Drain and Refill".
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove lock plate and brake hose from bracket.
4. Remove union bolt and then remove brake hose from caliper assembly.

INSTALLATION

1. Install brake hose by aligning with the protrusion on the caliper assembly, and tighten the union bolt to the specified torque. Refer to BR-11, "Hydraulic Circuit".

NOTE: Do not reuse copper washer.

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 flare nut wrench.
4. Refill brake fluid and bleed air. Refer to BR-10, "Bleeding Brake System".

Removal and Installation of Rear Brake Piping and Brake Hose

REMOVAL

1. Drain brake fluid. Refer to BR-9, "Drain and Refill".
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove lock plate and brake hose from bracket.
4. Remove union bolt, and then remove brake hose from caliper assembly.

INSTALLATION

1. Install brake hose by aligning with the protrusion on the caliper assembly, and tighten union bolt to the specified torque. Refer to BR-11, "Hydraulic Circuit".

NOTE: Do not reuse copper washer.

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 flare nut wrench.
4. Refill brake fluid and bleed air. Refer to BR-10, "Bleeding Brake System".

Inspection After Installation

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, 177 lb) with engine running for approximately 5 seconds, check for fluid leaks from each part.

BRAKE MASTER CYLINDER

On-board Inspection

LEAK INSPECTION

• Check for leaks at the master cylinder to brake booster attachment point, reservoir tank, and brake tube connections.

Removal and Installation

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. Using a flare nut wrench, disconnect brake tube from master cylinder assembly.
4. Remove master cylinder assembly mounting nuts and master cylinder assembly.

INSTALLATION

• Installation is in the reverse order of removal.
• Refill brake fluid and bleed air. Refer to BR-10, "Bleeding Brake System".

CAUTION:

• Refill with new brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".
• Do not reuse drained brake fluid.
• Adjust brake pedal. Refer to BR-6, "Inspection and Adjustment".

Disassembly and Assembly

DISASSEMBLY

CAUTION:

• Master cylinder cannot be disassembled.
• Remove reservoir tank only when absolutely necessary.

Pull reservoir tank off master cylinder sub-assembly, then remove grommets from master cylinder sub-assembly body.

ASSEMBLY

CAUTION:

• Never use mineral oil such as kerosene or gasoline during the cleaning and assembly process.
• Do not drop parts. If a part is dropped, do not use it.

1. Apply brake fluid or rubber grease to new grommets, then insert into master cylinder sub-assembly. Refer to GI-47, "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS".

CAUTION:

Do not reuse grommet.

2. Install reservoir tank onto master cylinder assembly.

BRAKE BOOSTER

On-Vehicle Service

OPERATING CHECK

With engine stopped, change the vacuum to atmospheric pressure by depressing the brake pedal several times. Then, with the brake pedal fully depressed, start the engine. When vacuum pressure reaches the standard, ensure the clearance between the brake pedal and floor panel decreases.

CAUTION:

Depressing pedal interval is approximately 5 seconds.

AIRTIGHT CHECK

• Run the engine at idle for approximately 1 minute, then stop it after applying vacuum to the booster. Depress the brake pedal normally to change the vacuum to atmospheric pressure. Ensure the distance between the brake pedal and floor panel gradually increases.
• Depress the brake pedal while the engine is running and stop the engine with the pedal depressed. The pedal stroke should not change after holding the pedal down for 30 seconds.

CAUTION:

Depressing pedal interval is approximately 5 seconds.

Removal and Installation

Component List:

• 1. Brake booster hose
• 2. Brake booster vacuum check valve
• 3. Brake booster
• 4. Lock nut
• 5. Gasket
• 6. Spacer block

REMOVAL

CAUTION:

• Be careful not to deform or bend brake piping while removing and installing the brake booster.
• Replace the clevis pin if it is damaged.
• Be careful not to damage brake booster stud bolt threads. If the brake booster is tilted or inclined during installation, the dash panel may damage the threads.
• Attach the check valve in the correct direction.

INSTALLATION

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

Length "B": 150 mm (5.91 in)

2. After adjusting "B", temporarily tighten the lock nut and install the booster assembly to the vehicle.
3. Install gaskets and spacer block between the booster assembly and the dash panel.
4. Connect the brake pedal with the clevis of the input rod.
5. Install the brake booster mounting nuts and tighten them to the specified torque.
6. Install brake piping from the brake master cylinder to the actuator and electric unit. Refer to BR-11, "Hydraulic Circuit".
7. Connect the vacuum hose to the brake booster.
8. Install the master cylinder to the booster assembly. Refer to BR-14, "Removal and Installation".
9. Adjust the brake pedal height. Refer to BR-6, "Inspection and Adjustment".
10. Tighten the lock nut of the input rod to the specified torque.
11. Refill new brake fluid and bleed air. Refer to BR-10, "Bleeding Brake System".

VACUUM LINES

Removal and Installation

Brake Booster Vacuum Hose

Component List:

• 1. Brake booster hose
• 2. Brake booster hose clip
• 3. Brake booster vacuum check valve

1. Disconnect the brake booster hose from the hose clip mounted on the bracket.
2. Release hose clips and disconnect the brake booster hose.
3. Remove the check valve from the 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.

Inspection

VISUAL INSPECTION

Check for improper assembly, damage, and deterioration.

CHECK VALVE INSPECTION

Airtightness Inspection

Use a suitable vacuum pump to check. Connect to the brake booster side of the check valve.

Check valve specification: Vacuum decrease should be within 1.3 kPa (10 mmHg, 0.39 inHg) for 15 seconds under a vacuum of – 66.7 kPa (– 500 mmHg, 19.69 inHg).

FRONT DISC BRAKE

On-vehicle Inspection

PAD WEAR INSPECTION

• Inspect the thickness of the pad through the cylinder body inspection hole. Use a scale for inspection if necessary. Refer to BR-34, "Front Disc Brake".

Components

Component List:

• 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. Pad retainer
• 11. Inner shim
• 12. Inner brake pad
• 13. Outer brake pad
• 14. Pad retainer
• 15. Outer shim
• 16. Bleed valve
• 17. Cap
• 18. Copper washers
• 19. Union bolt
• 20. Brake hose

WARNING:

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

Removal and Installation of Brake Pad

CAUTION:

• 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 caliper assembly. 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 PROCEDURE".

REMOVAL

1. Remove tires from vehicle using power tool.
2. Remove brake master cylinder reservoir cap.
3. Remove lower sliding pin bolt.
4. Suspend cylinder body with a wire and remove pad and shim from torque member.

INSTALLATION

1. Apply Molykote AS880N grease between brake pad plate and shim, then attach shims to brake pads. Refer to GI-47, "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS".
2. 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.

3. Push pistons into cylinder body.

NOTE: Using a disc brake piston tool (commercial service tool), etc., makes it easier to push in piston.

CAUTION:

By pushing in piston, brake fluid returns to master cylinder reservoir tank. Watch the level of the surface of reservoir tank.

4. Remove wire then swing cylinder body down over brake pad assemblies.
5. Install lower sliding pin bolt and tighten to specification. Refer to BR-22, "Components".
6. Check brake for drag.
7. Inspect fluid level, then install master cylinder reservoir cap.
8. Install wheel and tire.

Removal and Installation of Brake Caliper Assembly and Disc Rotor

REMOVAL

1. Remove tires from vehicle using power tool.
2. Drain brake fluid as necessary. Refer to BR-9, "Drain and Refill".
3. Remove union bolt as necessary and torque member bolts, then remove brake caliper assembly from the vehicle.

NOTE: Position brake caliper assembly aside using suitable wire, as necessary.

NOTE: 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 MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".
• Do not reuse drained brake fluid.

1. Install disc rotor.
2. Install sliding pin bolts and torque member to caliper, if removed. Refer to BR-22, "Components".
3. Install caliper assembly to the vehicle, then tighten torque member bolts to the specified torque. Refer to BR-22, "Components".

CAUTION:

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

4. Install brake hose to brake caliper assembly, if removed, then tighten union bolt to the specified torque. Refer to BR-22, "Components".

CAUTION:

• Do not reuse copper washers for union bolt.
• Attach brake hose to caliper assembly together with union bolt and washers.

5. Refill new brake fluid and bleed air. Refer to BR-10, "Bleeding Brake System".
6. Attach tires to the vehicle. Refer to WT-6, "Rotation".

Disassembly and Assembly of Brake Caliper Assembly

DISASSEMBLY

1. Remove sliding pin bolt, and then remove the pad, shim, shim cover, and pad retainer from the torque member.
2. Remove sliding pins and sliding pin boots from torque member.
3. Place a wooden block as shown, and blow air from the union bolt mounting hole to remove pistons and piston boots.

CAUTION:

Do not get your fingers caught in piston.

4. Using a flat-bladed screwdriver, remove piston seal from cylinder body.

CAUTION:

• Be careful not to damage cylinder inner wall.
• Do not reuse piston seal.

CALIPER INSPECTION

Cylinder Body

CAUTION:

• Use new brake fluid for cleaning. Do not use mineral oils such as gasoline or kerosene.
• Check the inside surface of the cylinder for score, rust, wear, damage, or foreign materials. If any of the above conditions are observed, replace the cylinder body.
• Minor damage from rust or foreign materials may be eliminated by polishing the surface with a fine emery paper. Replace cylinder body if necessary.

Torque Member

Check for wear, cracks, and damage. If damage or deformation is present, replace the affected part.

Piston

Check piston for score, rust, wear, damage, or presence of foreign materials. Replace if any of the above conditions are observed.

CAUTION:

Piston sliding surface is plated; do not polish with emery paper even if rust or foreign materials are stuck to the sliding surface.

Sliding Pins, and Sliding Pin Boots

Check sliding pin and sliding pin boot for wear, damage, and cracks. If damage or deformation is present, replace the affected part.

CAUTION:

Trailing/upper sliding pin must be replaced at each service.

ASSEMBLY

CAUTION:

Do not use NISSAN Rubber Grease (KRE00 00010, KRE00 00010 01) when assembling.

1. Apply clean brake fluid to new piston seal and insert seal into groove on cylinder body.

CAUTION:

Do not reuse piston seal.

DISC ROTOR INSPECTION

Visual Inspection

Check the surface of the disc rotor for uneven wear, cracks, and serious damage. If any non-standard condition is detected, replace the applicable part.

Runout Inspection

1. Using wheel nuts, fix the disc rotor to the wheel hub (two or more positions).
2. Inspect runout using a dial gauge. (Measured at 10 mm (0.39 in) inside the disc edge.)

Runout limit (on vehicle): 0.05 mm (0.0020 in)

NOTE: Make sure that the wheel bearing axial end play is within the specifications before measuring runout. Refer to FAX-5, "WHEEL BEARING INSPECTION".

3. If runout is outside the limit, find the minimum runout point by shifting mounting positions of the disc rotor and wheel hub by one hole.
4. If runout is still out of specification, turn the rotor with an on-car brake lathe.

BRAKE BURNISHING PROCEDURE

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 the 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.

REAR DISC BRAKE

On-vehicle Inspection

PAD WEAR INSPECTION

• Inspect the thickness of the pad through the cylinder body inspection hole. Use a scale for inspection if necessary. Refer to BR-34, "Rear Disc Brake".

Components

Component List:

• 1. Union bolt
• 2. Brake hose
• 3. Copper washers
• 4. Sliding pin bolt
• 5. Cap
• 6. Bleed valve
• 7. Cylinder body
• 8. Sliding pin
• 9. Piston seal
• 10. Piston
• 11. Piston boot
• 12. Torque member
• 13. Torque member bolt
• 14. Pad retainer
• 15. Outer shim
• 16. Outer brake pad
• 17. Inner brake pad
• 18. Inner shim

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 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 caliper assembly. 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-32, "BRAKE BURNISHING PROCEDURE".

Removal and Installation of Brake Pad

REMOVAL

1. Remove tires from vehicle with power tool.
2. Remove mounting bolt from the top mount.
3. Swing cylinder body open, and remove pads.

INSTALLATION

1. Push piston in so that pad is firmly attached and mount cylinder body to torque member.

NOTE: Using a disc brake piston tool (commercial service tool), makes it easier to push in the piston.

CAUTION:

By pushing in piston, brake fluid returns to master cylinder reservoir tank. Watch the level of the surface of reservoir tank.

2. Install pads to cylinder body.
3. Install top mounting bolt and tighten to specification.
4. Check brake for drag.
5. Install tires to the vehicle.

Removal and Installation of Brake Caliper Assembly and Disc Rotor

REMOVAL

1. Remove tires from vehicle with power tool.
2. Drain brake fluid. Refer to BR-9, "Drain and Refill".
3. Remove union bolt and mounting bolts, and remove brake caliper assembly.
4. Remove disc rotor.

INSTALLATION

CAUTION:

• Refill with new brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".
• Do not reuse drained brake fluid.

1. Install disc rotor.
2. Install caliper assembly to the vehicle, and tighten mounting bolts to specification. Refer to BR-28, "Components".

CAUTION:

Before installing caliper assembly to the vehicle, wipe off mounting surface of caliper assembly.

3. Install brake hose to caliper assembly and tighten union bolt to specification. Refer to BR-28, "Components".

CAUTION:

• Do not reuse copper washer for union bolt.
• Securely attach brake hose to protrusion on caliper assembly.

4. Refill new brake fluid and bleed air. Refer to BR-10, "Bleeding Brake System".
5. Install tires to the vehicle.

Disassembly and Assembly of Brake Caliper Assembly

DISASSEMBLY

1. Remove pads from cylinder body.
2. Remove sliding sleeve and boot from cylinder body.
3. Place a wooden block as shown in the figure, and blow air from union bolt mounting hole to remove piston and piston boot.

CAUTION:

Do not get your fingers caught in piston.

4. Using a flat-bladed screwdriver, remove piston seal from cylinder body.

CAUTION:

• Be careful not to damage cylinder inner wall.
• Do not reuse piston seal.

CALIPER INSPECTION

Cylinder Body

CAUTION:

• Use new brake fluid for cleaning. Do not use mineral oils such as gasoline or kerosene.
• Check the inside surface of the cylinder for score, rust, wear, damage, or foreign materials. If any of the above conditions are observed, replace the cylinder body.
• Minor damage from rust or foreign materials may be eliminated by polishing the surface with a fine emery paper. Replace cylinder body if necessary.

Torque Member

Check for wear, cracks, and damage. If damage or deformation is present, replace the affected part.

Piston

Check piston for score, rust, wear, damage, or presence of foreign materials. Replace if any of the above conditions are observed.

CAUTION:

Piston sliding surface is plated; do not polish with emery paper even if rust or foreign materials are stuck to the sliding surface.

ASSEMBLY

CAUTION:

Do not use NISSAN Rubber Grease (KRE00 00010, KRE00 00010 01) when assembling.

1. Apply clean brake fluid to new piston seal and insert seal into groove on cylinder body.

CAUTION:

Do not reuse piston seal.

DISC ROTOR INSPECTION

Visual Inspection

Check the surface of the disc rotor for uneven wear, cracks, and serious damage. If any non-standard condition is detected, replace the applicable part.

Runout Inspection

1. Using wheel nuts, install disc rotor to wheel hub (two or more positions).
2. Inspect runout using a dial gauge. (Measured at 10 mm (0.39 in) inside the disc edge.)

Runout limit (on vehicle): 0.05 mm (0.0020 in)

NOTE: Make sure that the wheel bearing axial end play is within the specifications before measuring runout. Refer to RAX-6, "Rear Axle Bearing".

3. If runout is outside the limit, find the minimum runout point by shifting mounting positions of the disc rotor and wheel hub by one hole.
4. If runout is still out of specification, turn the rotor with an on-car brake lathe.

BRAKE BURNISHING PROCEDURE

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 the 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.

SERVICE DATA AND SPECIFICATIONS (SDS)

General Specifications

Brake Pedal

Brake Booster

Front Disc Brake

Rear Disc Brake