Nissan Pathfinder. Manual - part 234

BR-44

< UNIT DISASSEMBLY AND ASSEMBLY >

FRONT DISC BRAKE

4. Apply brake fluid to each piston (1). Push each piston into cylin-

der 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 brake caliper to the vehicle. Refer to 

BR-36, "BRAKE CALIPER ASSEMBLY : Removal and

Installation"

.

INSPECTION AFTER INSTALLATION

1. Check the drag of front disc brake. If any drag is found, follow the procedure described below.
2. Remove brake pads.
3. Using a suitable tool, press the pistons into the brake caliper body.

CAUTION:

Do not damage the piston boots.

4. Install brake pads.
5. Depress the brake pedal several times.
6. Check the drag of front disc brake again. If any drag is found, disassemble the brake caliper body.
7. Burnish contact surfaces after refinishing or replacing disc rotors or if a soft pedal occurs at very low mile-

age. Refer to 

BR-18, "Brake Burnishing"

.

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REAR DISC BRAKE

BR-45

< UNIT DISASSEMBLY AND ASSEMBLY >

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REAR DISC BRAKE

Exploded View

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Disassembly and Assembly

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DISASSEMBLY

1. Remove the brake caliper from the vehicle. Refer to 

BR-40, "BRAKE CALIPER ASSEMBLY : Removal

and Installation"

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2. Remove sliding pin boots from torque member.
3. Remove sliding pin bolt bushing from sliding pin bolt.
4. Place a wooden block in the cylinder body and blow air from

union bolt hole to remove piston and piston boot.

WARNING:

Do not get fingers caught between pistons and brake cali-

per body.

CAUTION:

Do not reuse piston boot.

1.

Sliding pin bolt

2.

Sliding pin bolt bushing

3.

Cap

4.

Bleeder valve

5.

Brake caliper body

6.

Piston seal

7.

Piston

8.

Piston boot

9.

Sliding pin boot

10. Torque member
A.

Rubber grease
Apply brake fluid

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BRD0041D

BR-46

< UNIT DISASSEMBLY AND ASSEMBLY >

REAR DISC BRAKE

5. Remove piston seal from brake caliper body using suitable tool.

CAUTION:

• Do not damage cylinder inner wall.

• Do not reuse piston seal.

6. Remove bleeder valve and cap.

INSPECTION AFTER DISASSEMBLY

Brake Caliper Body

Check the inner wall of the brake caliper body for rust, wear, cracks or damage. Replace the brake caliper

body if any abnormal condition is detected.

CAUTION:

Always clean with new brake fluid. Do not clean with mineral oil such as gasoline and light oil.

Torque Member

Check the torque member for rust, wear, cracks or damage. Replace the torque member if any abnormal con-

dition 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:

Piston sliding surface is plated. Do not polish with sandpaper.

Sliding Pin and Sliding Pin Bolt Boot

Check the sliding pins and sliding pin bolt boots for rust, wear, cracks or damage. Replace the parts if any

abnormal condition is detected.

ASSEMBLY

1. Install bleeder valve and cap.
2. Apply rubber grease to piston seal (1), and install it to the brake

caliper body.

CAUTION:

Do not reuse piston seal.

3. Apply rubber grease to piston boot (1). Cover the piston (2) end

with the piston boot, and then install cylinder side lip on the pis-

ton boot securely into the groove on brake caliper body.

CAUTION:

Do not reuse piston boot.

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REAR DISC BRAKE

BR-47

< UNIT DISASSEMBLY AND ASSEMBLY >

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4. Apply brake fluid to piston (1). Push piston into brake caliper

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 contact.

5. Apply rubber grease to bushing; install bushing to sliding pin

bolt.

6. Install sliding pin boots to torque member.
7. Install the brake caliper to the vehicle. Refer to 

BR-40, "BRAKE

CALIPER ASSEMBLY : Removal and Installation"

.

INSPECTION AFTER INSTALLATION

1. Check the drag of rear disc brake. If any drag is found, follow the procedure described below.
2. Remove brake pads.
3. Using a suitable tool, press the pistons into the brake caliper body.

CAUTION:

Do not damage the piston boots.

4. Install brake pads.
5. Depress the brake pedal several times.
6. Check the drag of rear disc brake again. If any drag is found, disassemble the brake caliper body.
7. Burnish contact surfaces after refinishing or replacing disc rotors or if a soft pedal occurs at very low mile-

age. Refer to 

BR-19, "Brake Burnishing"

.

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