BRAKE SYSTEM

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 front seat belts to reduce the risk or severity of injury to the driver and front passenger during certain types of collisions. This system incorporates seat belt switch inputs and dual-stage front air bag modules. The SRS system utilizes seat belt switches to determine front air bag deployment, potentially deploying only one front air bag based on collision severity and occupant seat belt usage. Service information for safe system maintenance is detailed in the SRS and SB sections of this Service Manual.

WARNING:

• To prevent the SRS from becoming inoperative, which could increase the risk of personal injury or death in a collision involving air bag deployment, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect SRS removal and installation, can lead to personal injury due to unintentional system activation. For removal of the Spiral Cable and Air Bag Module, refer to the SRS section.
• Do not use electrical test equipment on any circuit related to the SRS unless specifically instructed in this Service Manual. SRS wiring harnesses are identifiable by their yellow and/or orange colors and connectors.

Precautions for Brake System

• Always use recommended brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".
• Do not reuse drained brake fluid.
• Be careful not to splash brake fluid on painted surfaces.
• To clean or wash parts of the master cylinder, disc brake caliper, and wheel cylinder, use clean brake fluid.
• Do not use mineral oils such as gasoline or kerosene, as they can damage the 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 commencing work, turn the ignition switch to OFF and disconnect connectors for the ABS actuator and electric unit (control unit), or the battery terminals.
• Burnish the brake contact surfaces after refinishing or replacing drums or rotors, after replacing pads or linings, or if a soft pedal condition 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

Commercial Service Tools

The following tools are recommended for brake system service:

• Flare nut crowfoot: Used for removing and installing brake piping. Available in 10mm (0.39 in) and 12mm (0.47 in) sizes.
• Torque wrench: Essential for ensuring proper tightening of components.
• Power tool: Used for removing front and rear caliper assemblies and tires.

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

This chart helps diagnose the cause of noise, vibration, or harshness symptoms by correlating symptoms with possible causes and suspected parts. It also provides reference pages for further information.

Symptoms include: Noise, Shake, Shimmy, Shudder.

Possible causes and suspected parts include: Pads (damaged, uneven wear), Shims (damaged), Rotor (imbalance, damage, runout, deformation, deflection, thickness variation), Propeller Shaft, Differential, Driveshaft, Suspension, Tires and Road Wheel, Steering.

BRAKE PEDAL

Inspection and Adjustment

INSPECTION

1. Inspect the brake pedal free height "H" from the lower dash.
2. Adjust the height according to the specified values.

CAUTION:

If the vehicle is equipped with an adjustable pedal, ensure the pedal is in its forwardmost position (closest to the floor) when measuring pedal height.

Brake Pedal Specifications

ADJUSTMENT

1. Loosen the stop lamp switch and ASCD switch by turning them 45° counterclockwise.
2. Loosen the lock nut on the input rod, then turn the input rod to adjust the pedal to the specified height. Tighten the lock nut once adjusted.

CAUTION:

Ensure the screw portion of the input rod's end is located inside the clevis.

3. With the pedal pulled up and held by hand, press the stop lamp switch and the ASCD switch in until their threaded ends contact the 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 them in place.

CAUTION:

Verify that the gap (C) between the rubber stops and the switch ends is within specifications.

5. Check the pedal play.

CAUTION:

Confirm that the stop lamp turns off when the pedal is released.

6. Start the engine and check the brake pedal height when depressed.

BRAKE PEDAL

Removal and Installation

Non-Adjustable Pedals

Components include:

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

Adjustable Pedals

Components include:

• 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:

• Before removal and installation, ensure the accelerator and brake pedals are in their forwardmost position (closest to the floor). This is crucial for aligning the base position of the accelerator and brake pedals (for adjustable types only).
• Do not disassemble the brake pedal adjusting mechanism (adjustable type only).
• Avoid damaging the brake pedal assembly during handling.
• Keep the brake pedal assembly away from water.

1. Remove the lower driver instrument panel. Refer to IP-13, "LOWER INSTRUMENT PANEL LH".
2. Remove the stop lamp switch and ASCD switch from the pedal assembly.

For adjustable pedal assemblies:

3. Disconnect the adjustable brake pedal cable from the adjustable pedal electric motor. This involves unlocking (1) and then pulling (2) the cable to detach it from the motor.
4. Remove the snap pin and clevis pin from the brake booster clevis.
5. Remove the mounting nuts and the pedal assembly.

Temporarily install nuts by hand to support the booster.

INSPECTION AFTER REMOVAL

Check the brake pedal for the following:

• Crack or deformation of the clevis pin stopper.
• Clevis pin deformation.
• Crack of any welded portion.
• Brake pedal bend.

INSTALLATION

1. Installation follows the reverse order of removal.
2. Check the brake pedal for smooth operation, ensuring there is no binding or sticking when applying or releasing the brake pedal.
3. Check the brake pedal adjustable feature for smooth operation, ensuring no binding or sticking when adjusting the pedal forward or backward.
4. After installing the brake pedal assembly in the vehicle, ensure it is adjusted correctly. Refer to BR-6, "Inspection and Adjustment".

BRAKE FLUID

On-board Inspection

LEVEL CHECK

• Ensure the fluid level in the reservoir tank is within the standard range (between MAX and MIN lines).
• Visually inspect the reservoir tank and surrounding areas for fluid leaks.
• If the fluid level is excessively low, inspect the brake system for leaks.
• If the brake warning lamp remains illuminated after the parking lever is released, check the brake system for fluid leakage.

A diagram shows the reservoir tank with MAX and MIN lines.

Drain and Refill

CAUTION:

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

1. Connect a vinyl tube to each bleed valve.
2. Depress the brake pedal, loosen each bleed valve, and gradually remove the brake fluid.
3. Ensure no foreign material is present in the reservoir tank, then refill with new brake fluid.
4. Rest your foot on the brake pedal. Loosen a bleed valve. Slowly depress the pedal until it stops. Tighten the bleed valve. Release the brake pedal. Repeat this process several times, pausing to add new brake fluid to the master cylinder. Continue until new brake fluid flows out. Bleed air as described in BR-11, "Bleeding Brake System".

A diagram illustrates connecting a vinyl tube to a bleed valve.

Bleeding Brake System

CAUTION:

While bleeding, monitor the master cylinder fluid level closely.

1. Turn the ignition switch OFF and disconnect the ABS actuator and electric unit (control unit) connector or the battery negative cable.
2. Connect a vinyl tube to the rear right bleed valve.
3. Fully depress the brake pedal 4 to 5 times.
4. With the brake pedal depressed, loosen the bleed valve to allow air to escape, then tighten it immediately.
5. Repeat steps 3 and 4 until no more air is expelled.
6. Tighten the bleed valve to the specified torque. Refer to BR-23, "Components" (front disc brake) and BR-28, "Components" (rear disc brake).
7. Repeat steps 2 through 6 for each wheel. Ensure the master cylinder reservoir tank is filled at least halfway. Bleed air in the following order: front left, rear left, and front right bleed valves.

BRAKE PIPING AND HOSE

Hydraulic Circuit

A schematic diagram illustrates the hydraulic circuit, showing the connections between the master cylinder, brake booster, actuator, and the brake lines leading to the front and rear wheels. Key components include the actuator (1), master cylinder (2), brake booster (3), and connector (4). Torque specifications for union bolts and flare nuts are provided: 18 N·m (1.8 kg-m, 13 ft-lb) for union bolts or hose connections, and 16.2 N·m (1.7 kg-m, 12 ft-lb) for flare nuts.

CAUTION:

• All hoses and piping (tubes) must be free from excessive bending, twisting, and pulling.
• Ensure there is no interference with other parts when turning the steering wheel both clockwise and counterclockwise.
• Brake piping is a critical safety component. If a brake fluid leak is detected, always disassemble the affected parts and replace them with new ones if necessary.
• Be careful not to splash brake fluid on painted areas, as it can cause paint damage. If brake fluid is splashed on painted areas, wash it away with water immediately.
• Do not bend or twist brake hoses sharply, or pull them forcefully.
• When removing components, cover connections to prevent dirt, dust, or other foreign matter from entering the system.
• 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-10, "Drain and Refill".
2. Using a flare nut wrench, remove the brake tube from the brake hose.
3. Remove the lock plate and brake hose from the bracket.
4. Remove the union bolt and then remove the brake hose from the cylinder body.

INSTALLATION

1. Install the brake hose by aligning it with the protrusion on the cylinder body, then install the union bolt.

Do not reuse copper washers.

2. Insert the brake hose end through the bracket, then secure it to the bracket with the lock plate.
3. Install the brake tube to the brake hose, then tighten the flare nut using a flare nut wrench.
4. Refill brake fluid and bleed air. Refer to BR-11, "Bleeding Brake System".

Diagrams show the union bolt connection and the brake tube to hose connection.

Removal and Installation of Rear Brake Piping and Brake Hose

REMOVAL

1. Drain brake fluid. Refer to BR-10, "Drain and Refill".
2. Using a flare nut wrench, remove the brake tube from the brake hose.
3. Remove the lock plate and brake hose from the bracket.
4. Remove the brake hose from the cylinder body.

INSTALLATION

1. Install the brake hose to the cylinder body.

Do not reuse copper washers.

2. Insert the brake hose end through the bracket, then secure it to the bracket with the lock plate.
3. Install the brake tube to the brake hose, then tighten the flare nut using a flare nut wrench. Refer to BR-12, "Hydraulic Circuit".
4. Refill brake fluid and bleed air. Refer to BR-11, "Bleeding Brake System".

Diagrams show the union bolt connection and the brake tube to hose connection.

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 the brake pedal with a force of 785 N (80 kg, 177 lb) with the engine running for approximately 5 seconds, check for fluid leakage 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.

With ABS

An exploded view diagram shows the master cylinder assembly components:

• 1. Reservoir cap
• 2. Fluid level sensor
• 3. Grommet
• 4. Master cylinder sub-assembly
• 5. Reservoir tank
• 6. Seal

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 AND INSTALLATION

Removal

1. Drain brake fluid. Refer to BR-10, "Drain and Refill".
2. Disconnect the harness connector for the fluid level sensor.
3. Using a flare nut wrench, disconnect the brake tube from the master cylinder assembly.
4. Remove the master cylinder assembly mounting nuts and the master cylinder assembly.

Installation

Installation is in the reverse order of removal.

• Refill brake fluid and bleed air. Refer to BR-11, "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, "ADJUSTMENT".

DISASSEMBLY AND ASSEMBLY

Disassembly

CAUTION:

• The master cylinder cannot be disassembled.
• Remove the reservoir tank only when absolutely necessary.

1. Pull the reservoir tank off the master cylinder sub-assembly, then remove the grommets from the 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 them into the master cylinder sub-assembly. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".

CAUTION:

Do not reuse grommets.

2. Install the reservoir tank onto the master cylinder assembly.

With ABLS or VDC

An exploded view diagram shows the master cylinder assembly components:

• 1. Reservoir cap
• 2. Fluid level sensor
• 3. Grommet
• 4. Master cylinder sub-assembly
• 5. Front pressure sensor
• 6. Rear pressure sensor
• 7. Reservoir tank
• 8. Seal

BRAKE BOOSTER

On-Vehicle Service

OPERATING CHECK

With the 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 the vacuum pressure reaches the standard level, ensure the clearance between the brake pedal and the floor panel decreases.

CAUTION:

Depressing the pedal interval should be approximately 5 seconds.

Diagrams illustrate the pedal movement and clearance changes.

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. Verify that the distance between the brake pedal and the floor panel gradually increases.
• Depress the brake pedal while the engine is running, then stop the engine with the pedal depressed. The pedal stroke should not change after holding the pedal down for 30 seconds.

CAUTION:

Depressing the pedal interval should be approximately 5 seconds.

Diagrams illustrate the pedal stroke changes during the airtight check.

BRAKE BOOSTER

With ABS or BLSD

An exploded view diagram shows the brake booster assembly components:

• 1. Reservoir tank
• 2. Master cylinder
• 3. Gasket
• 4. Brake pedal
• 5. Lock nut
• 6. Spacer block
• 7. Brake booster

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 the brake booster stud bolt threads. Tilting or inclining the brake booster during installation may damage the dash panel threads.
• Attach the check valve in the correct direction.

1. Remove the engine room cover with a power tool. Refer to EM-11, "Removal and Installation".
2. Remove the engine air duct assembly. Refer to EM-14, "Removal and Installation".
3. Remove the brake piping from the brake master cylinder.
4. Remove the brake master cylinder. Refer to BR-15, "With ABS".
5. Remove the vacuum hose from the brake booster. Refer to BR-22, "VACUUM LINES".
6. Disconnect the active boost and delta stroke sensor harness connectors from the brake booster assembly.
7. Remove the brake pedal attachment snap pin and clevis pin from inside the vehicle.
8. Remove the nuts securing the brake booster and brake pedal assembly.
9. Remove the brake booster assembly from the dash panel.

INSPECTION AFTER REMOVAL

Output Rod Length Inspection

1. Using a vacuum pump, apply a vacuum of – 66.7 kPa (– 500 mmHg, – 19.69 inHg) to the brake booster.
2. Check the output rod length.

Standard dimension when vacuum is – 66.7 kPa (– 500 mmHg, – 19.69 inHg): 15.6 - 15.9 mm (0.614 - 0.626 in)

A diagram shows the output rod length inspection setup.

INSTALLATION

1. Loosen the lock nut to adjust the input rod length so that length "B" (as shown in the figure) meets the specified value. Length "B": 148.5 mm (5.85 in).
2. After adjusting "B", temporarily tighten the lock nut and install the booster assembly to the vehicle.
3. Install gaskets and a spacer block between the booster assembly and the dash panel.
4. Connect the brake pedal to the clevis of the input rod.
5. Install the pedal bracket mounting nuts and tighten them to the specified torque.
6. Install the brake piping from the brake master cylinder to the ABS actuator. Refer to BR-12, "Hydraulic Circuit".
7. Connect the vacuum hose to the brake booster.
8. Install the master cylinder to the booster assembly. Refer to BR-19, "With ABS or BLSD".
9. Adjust the height and play of the brake pedal. Refer to BR-6, "ADJUSTMENT".
10. Tighten the lock nut of the input rod to the specified torque.
11. Install the engine air duct assembly. Refer to EM-14, "Removal and Installation".
12. Install the engine room cover. Refer to EM-11, "Removal and Installation".
13. Refill brake fluid and bleed air. Refer to BR-11, "Bleeding Brake System".

CAUTION:

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

BRAKE BOOSTER

With VDC

An exploded view diagram shows the brake booster assembly components:

• 1. Reservoir tank
• 2. Master cylinder
• 3. Gasket
• 4. Brake pedal
• 5. Lock nut
• 6. Spacer block
• 7. Brake booster
• 8. Active booster
• 9. Delta stroke sensor

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 the brake booster stud bolt threads. Tilting or inclining the brake booster during installation may damage the dash panel threads.
• Attach the check valve in the correct direction.

1. Remove the engine room cover with a power tool. Refer to EM-11, "Removal and Installation".
2. Remove the engine air duct assembly. Refer to EM-14, "Removal and Installation".
3. Remove the brake piping from the brake master cylinder.
4. Remove the brake master cylinder. Refer to BR-15, "With ABS".
5. Remove the vacuum hose from the brake booster. Refer to BR-22, "VACUUM LINES".
6. Disconnect the active boost and delta stroke sensor harness connectors from the brake booster assembly.
7. Remove the brake pedal attachment snap pin and clevis pin from inside the vehicle.
8. Remove the nuts securing the brake booster and brake pedal assembly.
9. Remove the brake booster assembly from the dash panel.

INSPECTION AFTER REMOVAL

Output Rod Length Inspection

1. Using a vacuum pump, apply a vacuum of – 66.7 kPa (– 500 mmHg, – 19.69 inHg) to the brake booster.
2. Check the output rod length.

Standard dimension when vacuum is – 66.7 kPa (– 500 mmHg, – 19.69 inHg): 15.6 - 15.9 mm (0.614 - 0.626 in)

A diagram shows the output rod length inspection setup.

INSTALLATION

1. Loosen the lock nut to adjust the input rod length so that length "B" (as shown in the figure) meets the specified value. Length "B": 148.5 mm (5.85 in).
2. After adjusting "B", temporarily tighten the lock nut and install the booster assembly to the vehicle.
3. Install gaskets and a spacer block between the booster assembly and the dash panel.
4. Connect the brake pedal to the clevis of the input rod.
5. Install the pedal bracket mounting nuts and tighten them to the specified torque.
6. Connect the active boost and delta stroke sensor harness connectors to the brake booster assembly.
7. Connect the vacuum hose to the brake booster.
8. Install the master cylinder to the booster assembly. Refer to BR-20, "With VDC".
9. Adjust the height and play of the brake pedal. Refer to BR-6, "ADJUSTMENT".
10. Tighten the lock nut of the input rod to the specified torque.
11. Install the engine air duct assembly. Refer to EM-14, "Removal and Installation".
12. Install the engine room cover. Refer to EM-11, "Removal and Installation".
13. Refill brake fluid and bleed air. Refer to BR-11, "Bleeding Brake System".

VACUUM LINES

Removal and Installation

The vacuum line system consists of a hose clip (1), clamp (2), vacuum hose (3), and check valve (4).

1. Disconnect the vacuum hose from the hose clip.
2. Release clamps and disconnect the vacuum hose.
3. Remove the check valve from the brake booster.
4. Installation is in the reverse order of removal.

CAUTION:

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

A diagram shows the correct insertion depth for the vacuum hose.

Inspection

VISUAL INSPECTION

Check for improper assembly, damage, and deterioration.

CHECK VALVE INSPECTION

Airtightness Inspection

Use a suitable vacuum pump to check the check valve's airtightness. Connect the pump 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).

A diagram illustrates the connection for checking the check valve.

FRONT DISC BRAKE

On-vehicle Inspection

PAD WEAR INSPECTION

Inspect the thickness of the brake pad through the cylinder body inspection hole. Use a scale for inspection if necessary.

• Standard thickness: 11.88 mm (0.468 in)
• Repair limit thickness: 1.0 mm (0.039 in)

Components

The front disc brake caliper assembly consists of the following parts:

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

WARNING:

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

FRONT DISC BRAKE

Removal and Installation of Brake Pad

REMOVAL

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

INSTALLATION

1. Push pistons in so that the pad is firmly installed, and mount the cylinder body to the torque member.

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

CAUTION:

As pistons are pushed in, brake fluid returns to the master cylinder reservoir tank. Monitor the fluid level.

2. Attach the pad retainer to the torque member.

Apply Molykote M-77 grease to the pad retainers where brake pads contact.

CAUTION:

When attaching the pad retainer, ensure it is firmly seated and does not float higher than the torque member.

3. Install the lower sliding pin bolt and tighten it to the specified torque. Refer to BR-23, "Components".
4. Check the brake for drag.
5. Install tires to the vehicle. Refer to WT-6, "Rotation".

A diagram shows the pad retainer and torque member relationship.

FRONT DISC BRAKE

Removal and Installation of Brake Caliper and Disc Rotor

REMOVAL

1. Remove tires from the vehicle using a power tool.
2. Drain brake fluid as necessary. Refer to BR-10, "Drain and Refill".

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

3. Remove the union bolt as necessary and torque member bolts, then remove the cylinder body from the vehicle.

Position the cylinder body aside using a suitable wire, as necessary.

When servicing the cylinder body, remove sliding pin bolts and the caliper from the torque member.

4. Remove the 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 the disc rotor.
2. Install sliding pin bolts if removed and tighten to the specified torque. Refer to BR-23, "Components".
3. Install the cylinder body to the vehicle, then tighten the torque member bolts to the specified torque. Refer to BR-23, "Components".

CAUTION:

• When attaching the cylinder body to the vehicle, wipe any oil off the knuckle spindle, washers, and cylinder body attachment surfaces.
• Do not reuse caliper torque member bolts.
4. Install the brake hose to the cylinder body, then tighten the union bolt to the specified torque. Refer to BR-23, "Components".

CAUTION:

• Do not reuse copper washers for the union bolt.
• Attach the brake hose to the cylinder body along with the union bolt and washers.
5. Refill new brake fluid and bleed air. Refer to BR-11, "Bleeding Brake System".
6. Attach tires to the vehicle. Refer to WT-6, "Rotation".

Disassembly and Assembly of Brake Caliper

DISASSEMBLY

1. Remove the sliding pin bolt, and then remove the pad, shim, shim cover, and pad retainer from the torque member.
2. Remove the sliding pins and sliding pin boots from the 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 the piston.

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

CAUTION:

Be careful not to damage the cylinder inner wall.

Diagrams illustrate piston removal and piston seal removal.

CALIPER INSPECTION

Cylinder Body

CAUTION:

• Use new brake fluid for cleaning. Do not use mineral oils such as gasoline or kerosene. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".
• Check the inside surface of the cylinder for score, rust, wear, damage, or foreign materials. If any of these conditions are observed, replace the cylinder body.
• Minor damage from rust or foreign materials may be removed by polishing the surface with fine emery paper. Replace the cylinder body if necessary.

Torque Member

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

Piston

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

CAUTION:

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

Sliding Pins, and Sliding Pin Boots

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

CAUTION:

The 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 the new piston seal and insert the seal into the groove on the cylinder body. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".

CAUTION:

Do not reuse the piston seal.

2. Apply clean brake fluid to the piston and piston boot, then install the piston boot into the piston groove.

CAUTION:

Do not reuse the piston boot.

3. Insert the piston into the cylinder body by hand and insert the piston boot's piston-side lip into the piston groove.

CAUTION:

Press the piston evenly and vary the pressing point to prevent the cylinder inner wall from being rubbed.

4. Install the sliding pins and sliding pin boots to the torque member.

Diagrams show the installation of the piston seal and piston boot.

FRONT DISC BRAKE

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 the disc rotor to the wheel hub at 2 or more positions.
2. Inspect runout using a dial gauge. [Measured at 10 mm / 0.39 in inside the disc edge.]
3. Runout limit (on vehicle): 0.04 mm (0.0016 in)

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

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

A diagram shows the runout inspection setup.

Thickness Inspection

Using a micrometer, check the thickness of the disc rotor. If the thickness is at or below the wear limit, or exceeds the maximum uneven wear, replace the disc rotor.

• Standard thickness: 26.0 mm (1.024 in)
• Repair limit thickness: 24.5 mm (0.965 in)
• Maximum uneven wear (measured at 8 positions): 0.015 mm (0.0006 in)

A diagram shows the thickness inspection setup.

BRAKE BURNISHING PROCEDURE

Burnish the 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 so that the 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 brake pad through the cylinder body inspection hole. Use a scale for inspection if necessary.

• Standard thickness: 12.13 mm (0.478 in)
• Repair limit thickness: 1.0 mm (0.039 in)

Components

The rear disc brake caliper assembly consists of the following parts:

• 1. Brake hose
• 2. Copper washer
• 3. Cap
• 4. Bleed valve
• 5. Mounting bolt
• 6. Cylinder body
• 7. Piston seal
• 8. Piston
• 9. Piston boot
• 10. Knuckle slide
• 11. Sliding sleeve boot
• 12. Sliding sleeve
• 13. Inner pad
• 14. Outer pad

WARNING:

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

REAR DISC BRAKE

Removal and Installation of Brake Pad

REMOVAL

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

INSTALLATION

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

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

CAUTION:

As pistons are pushed in, brake fluid returns to the master cylinder reservoir tank. Monitor the fluid level.

2. Install the pads to the cylinder body.
3. Install the top mounting bolt and tighten to specification.
4. Check brake for drag.
5. Install tires to the vehicle. Refer to WT-6, "Rotation".

REAR DISC BRAKE

Removal and Installation of Brake Caliper and Disc Rotor

REMOVAL

1. Remove tires from the vehicle using a power tool.
2. Drain brake fluid as necessary. Refer to BR-10, "Drain and Refill".

Do not remove the union bolt unless removing the cylinder body.

3. Remove bolts as shown, and the cylinder body.

Position the cylinder body aside using a suitable wire, as necessary.

4. Remove the 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 the disc rotor.
2. Install the cylinder body to the vehicle, and tighten the mounting bolts to specification. Refer to BR-28, "Components".

CAUTION:

Before installing the cylinder body to the vehicle, wipe off the mounting surface of the cylinder body.

3. Install the brake hose to the cylinder body and tighten to specification. Refer to BR-28, "Components".

CAUTION:

Do not reuse copper washers.

Securely attach the brake hose to the protrusion on the cylinder body.

4. Refill new brake fluid and bleed air. Refer to BR-11, "Bleeding Brake System".
5. Install tires to the vehicle. Refer to WT-6, "Rotation".

REAR DISC BRAKE

Disassembly and Assembly of Brake Caliper

DISASSEMBLY

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

CAUTION:

Do not get your fingers caught in the piston.

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

CAUTION:

Be careful not to damage the cylinder inner wall.

Diagrams illustrate piston removal and piston seal removal.

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 these conditions are observed, replace the cylinder body.
• Minor damage from rust or foreign materials may be removed by polishing the surface with fine emery paper. Replace the cylinder body if necessary.

Torque Member

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

Piston

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

CAUTION:

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

Sliding Pins, and Sliding Pin Boots

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

CAUTION:

The 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 the new piston seal and insert it into the groove on the cylinder body. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS".

CAUTION:

Do not reuse the piston seal.

2. Apply clean brake fluid to the piston and piston boot, then install the piston boot into the piston groove.

CAUTION:

Do not reuse the piston boot.

3. Insert the piston into the cylinder body by hand and insert the piston boot's piston-side lip into the piston groove.

CAUTION:

Press the piston evenly and vary the pressing point to prevent the cylinder inner wall from being rubbed.

4. Install the sliding boots and sleeves to the cylinder body.

Diagrams show the installation of the piston seal and piston boot.

REAR DISC BRAKE

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 the disc rotor to the wheel hub at 2 or more positions.
2. Inspect runout using a dial gauge. [Measured at 10 mm / 0.39 in inside the disc edge.]
3. Runout limit (on vehicle): 0.05 mm (0.0020 in)

NOTE: Ensure that wheel bearing axial end play is within the specification before measuring runout. Refer to RAX-12, "Axle Bearing".

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

A diagram shows the runout inspection setup.

SERVICE DATA AND SPECIFICATIONS (SDS)

General Specifications

Brake Pedal

Brake Booster

Check Valve

Front Disc Brake

Rear Disc Brake