Nissan Murano. Manual - part 208

BR-42

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

4.

Apply brake fluid to piston (1). Push piston into cylinder body by
hand and push piston boot (2) piston-side lip into the piston
groove.

CAUTION:

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

5.

Apply rubber grease to bushing, install bushing to sliding pin.

6.

Apply rubber grease to sliding pins and sliding pin boots, install
sliding pins and sliding pin boots to torque member.

7.

Install the cylinder body to the torque member and tighten the
sliding pin bolts to the specified torque.

BRAKE CALIPER ASSEMBLY (1 PISTON TYPE) : Inspection

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INSPECTION AFTER DISASSEMBLY

Cylinder Body

Check the inner wall of the cylinder for rust, wear, cracks or damage. Replace the cylinder if any abnormal
condition is detected.

CAUTION:

Always clean with new brake fluid. Never clean with mineral oil such as gasoline and light oil.

Torque Member

Check the torque member for rust, wear, cracks or damage. Replace the member if any abnormal condition is
detected.

Piston

Check the surface of the piston for rust, wear, cracks or damage. Replace the piston if any abnormal condition
is detected.

CAUTION:

A piston sliding surface is plated. Never polish with sandpaper.

Sliding Pin and Sliding Pin Boot

Check the sliding pins and sliding boots for rust, wear, cracks or damage. Replace the parts if any abnormal
condition is detected.

INSPECTION AFTER INSTALLATION

1.

Check a drag of front disc brake. If any drag is found, follow the procedure described below.

2.

Remove brake pads.

3.

Press the piston.

CAUTION:

• Never damage the piston boot.
• When replacing a pad with new one, check a brake fluid level in the reservoir tank because brake

fluid returns to master cylinder reservoir tank when pressing piston in.

NOTE:
Use a disc brake piston tool to easily press piston.

4.

Install brake pads.

5.

Depress the brake pedal several times.

6.

Check a drag of front disc brake again. If any drag is found, disassemble the cylinder body. Refer to 

BR-

40, "BRAKE CALIPER ASSEMBLY (1 PISTON TYPE) : Disassembly and Assembly"

.

7.

Burnish contact surfaces after refinishing or replacing disc rotors, or if a soft pedal occurs at very low mile-
age. Refer to 

BR-16, "DISC ROTOR : Inspection and Adjustment"

.

BRAKE CALIPER ASSEMBLY (2 PISTON TYPE)

BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Exploded View

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REMOVAL

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FRONT DISC BRAKE

BR-43

< REMOVAL AND INSTALLATION >

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DISASSEMBLY

BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Removal and Installation

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REMOVAL

WARNING:

1.

Brake caliper assembly

Refer to 

GI-4, "Components"

 for symbols not described on the above.

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1.

Cap

2.

Bleeder valve

3.

Cylinder body

4.

Sliding pin

5.

Sliding pin boot

6.

Bushing

7.

Piston seal

8.

Piston

9.

Piston boot

10. Torque member

: Apply rubber grease.

: Apply brake fluid.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

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BR-44

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

Since dust covering the front brake has an affect on human body, the dust must be removed with a
dust collector. Never splatter the dust with an air blow gun.

CAUTION:

Never depress the brake pedal. Brake fluid may splash while removing the brake hose.

1.

Remove tires with power tool.

2.

Fix the disc rotor using wheel nuts.

3.

Drain brake fluid. Refer to 

BR-12, "Draining"

.

CAUTION:

Never spill or splash brake fluid on the disc rotor.

4.

Remove union bolt and copper washers, and then disconnect brake hose from caliper assembly. Refer to

BR-22, "FRONT : Exploded View"

.

5.

Remove torque member mounting bolts, and remove brake caliper assembly.

CAUTION:

Never drop brake pads and caliper assembly.

6.

Remove disc rotor.

CAUTION:

• Put matching marks on the wheel hub and bearing assembly and the disc rotor before removing

the disc rotor.

• Never drop disc rotor.

INSTALLATION

WARNING:

Since dust covering the front brake has an affect on human body, the dust must be removed with a
dust collector. Never splatter the dust with an air blow gun.

CAUTION:

Never depress the brake pedal. Brake fluid may splash while removing the brake hose.

1.

Install disc rotor.

CAUTION:

Align the matching marks put during removal when reusing the disc rotor.

2.

Install the brake caliper assembly to the vehicle and tighten the torque member mounting bolts to the
specified torque.

CAUTION:

Never spill or splash any grease and moisture on the brake caliper assembly mounting face,
threads, mounting bolts and washers. Wipe out any grease and moisture.

3.

Install brake hose and copper washers to brake caliper assembly, and tighten union bolts to the specified
torque. Refer to 

BR-22, "FRONT : Exploded View"

.

CAUTION:

Never reuse copper washer.

4.

Refill with new brake fluid and perform the air bleeding. Refer to 

BR-13, "Bleeding Brake System"

.

CAUTION:

• Never reuse drained brake fluid.
• Never spill or splash brake fluid on the disc rotor.

5.

Check a drag of front disc brake. If any drag is found, refer to 

BR-46, "BRAKE CALIPER ASSEMBLY (2

PISTON TYPE) : Inspection"

.

BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Disassembly and Assembly

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DISASSEMBLY

NOTE:
Never remove the torque member and pad retainers when disassembling and assembling the cylinder body.

1.

Remove the sliding pin bolts, and remove the cylinder body from the torque member.

CAUTION:

Never drop brake pads, shims, shim covers and pad retainers from torque member.

2.

Remove brake pads, shims and shim covers. Refer to 

BR-37, "BRAKE PAD (2 PISTON TYPE) : Exploded

View"

.

3.

Remove sliding pins and sliding pin boots from torque member.

FRONT DISC BRAKE

BR-45

< REMOVAL AND INSTALLATION >

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4.

Remove bushing from sliding pin.

5.

Place a wooden block as shown in the figure, and blow air from
union bolt mounting hole to remove pistons and piston boots.

CAUTION:

Never get fingers caught in the pistons.

6.

Remove piston seals from cylinder body using suitable tool.

CAUTION:

Be careful not to damage a cylinder inner wall.

7.

Remove bleeder valve and cap.

ASSEMBLY

1.

Install bleeder valve and cap.

2.

Apply rubber grease to piston seals (1), and install to cylinder
body.

CAUTION:

Never reuse piston seals.

3.

Apply rubber grease to piston boots (1). Cover the piston (2) end
with piston boot, and then install cylinder side lip on piston boot
securely into a groove on cylinder body.

CAUTION:

Never reuse piston boots.

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