Exploded View

Exploded View

1.	Brake caliper body	2.	Bleeder valve	3.	Bleeder cap
4.	Piston	5.	Slide pin	6.	Bushing
7.	Piston boot	8.	Slide pin boot	9.	Torque member
10.	Piston seal	A.	Slide pin bolt	B.	Rubber grease
C.	Niglube RX-2	D.	Torque member bolt		Brake fluid

Removal and Installation

Removal and Installation

Warning:

Clean dust on the brake caliper and the brake pads using a vacuum dust collector to minimize the hazards of airborne particles or other material.

CAUTION:

• Do not depress the brake pedal while removing the brake pads because the piston may pop out.

• Do not spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it off immediately and wash with water if it gets on a painted surface.

• Do not bend, twist, or pull the brake hoses and piping.

• Do not reuse drained brake fluid.

Note:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

REMOVAL

Observe the brake fluid level in the master cylinder reservoir tank. Partially drain brake fluid if necessary. Refer to Draining.

Remove the front wheel and tire using power tool. Refer to Removal and Installation .

Secure the disc brake rotor using wheel nuts.

Remove the union bolt, the copper sealing washers, and disconnect the brake hose from the brake caliper. Discard the copper sealing washers. Refer to Exploded View.

CAUTION:

Do not reuse copper sealing washers.

Remove the slide pin bolts. Refer to Exploded View.

Remove the brake caliper from the torque member.

CAUTION:

Do not drop the brake pads, the shims, or the brake caliper.

Remove the brake pads, shims, and pad retainers from the torque member. Refer to Exploded View.

CAUTION:

• Do not damage the pad retainers or the piston boot.

• Do not drop the brake pads, shims, or pad retainers.

• Note the position of components during removal to aid with installation.

Remove the torque member bolts and the torque member.

INSTALLATION

Install the torque member and the torque member bolts. Tighten the torque member bolts to the specified torque. Refer to Exploded View.

Install the brake pads, shims, and pad retainers to the torque member. Refer to Exploded View.

CAUTION:

Do not drop the brake pads, shims, or pad retainers.

Install the brake caliper to the torque member.

Install the slide pin bolts. Tighten the slide pin bolts to the specified torque.

Assemble the union bolt (1) and the copper sealing washers (2) to the brake hose and install it as an assembly to the brake caliper. Align the brake hose part (A) with the brake caliper assembly projection (B), and tighten the union bolt to the specified torque. Refer to Exploded View.

CAUTION:

Do not reuse copper sealing washers.

Refill with new brake fluid and bleed air from the brake system. Refer to Bleeding Brake System.

CAUTION:

• Do not reuse drained brake fluid.

• Do not spill or splash brake fluid on the disc brake rotor.

Depress the brake pedal several times and perform the inspection after installation.

Install the front wheel and tire. Refer to Removal and Installation.

INSPECTION AFTER INSTALLATION

Check the drag of the front disc brake. If any drag is found, perform the following procedure: Remove the brake pads. Refer to Removal and Installation. Using a suitable tool, press the piston into the brake caliper body.

CAUTION:

Do not damage the piston boot.

Install the brake pads. Depress the brake pedal several times. Check the drag of the front disc brake again. If any drag is found, disassemble the brake caliper body. Refer to Disassembly and Assembly.

Burnish contact surfaces after replacing the brake caliper or if a soft pedal occurs at very low mileage. Refer to Periodic Maintenance Operation.

Disassembly and Assembly

Disassembly and Assembly

Warning:

Clean dust on the brake caliper using a vacuum dust collector to minimize the hazards of airborne particles or other material.

CAUTION:

• Do not reuse drained brake fluid.

• Do not damage the piston boot.

DISASSEMBLY

Remove the brake caliper from the Nissan Sentra vehicle. Refer to Removal and Installation.

Remove the slide pins and the slide pin boots from the torque member. Refer to Exploded View.

Remove the bushing from the slide pin.

Place a wooden block in the brake caliper body and blow air from union bolt hole to remove the piston and the piston boot.

Warning:

Do not get fingers caught between the piston and the brake caliper body.

CAUTION:

Do not reuse the piston boot.

Remove the piston seal from the brake caliper body using a suitable tool.

CAUTION:

• Do not damage cylinder inner wall.

• Do not reuse the piston seal.

Remove the bleeder valve and cap.

Perform the inspection after disassembly.

INSPECTION AFTER DISASSEMBLY

Brake Caliper Body

Check the inner wall of the brake caliper body for rust, wear, cracks, and damage. Replace the brake caliper if any abnormal condition is detected.

CAUTION:

Clean the brake caliper using new brake fluid. Do not use mineral oils such as gasoline or kerosene.

Torque Member

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

Piston

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

CAUTION:

The piston sliding surface is plated. Do not polish with sandpaper.

Slide Pins and Bolts

Check the slide pins and bolts for rust, wear, cracks, and damage. Replace the parts if any abnormal condition is detected.

ASSEMBLY

Install the bleeder valve and cap. Refer to Exploded View.

Apply rubber grease to the new piston seal (1). Install the new piston seal to the brake caliper body.

CAUTION:

Do not reuse the piston seal.

Apply rubber grease to the new piston boot (1). Apply brake fluid to the piston (2). Cover the piston end with the new piston boot. Install the cylinder side lip on the piston boot securely into the groove on the brake caliper body.

CAUTION:

Do not reuse the piston boot.

Push the piston (1) into the brake caliper body by hand and push the piston boot (2) 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.

Apply Niglube RX-2 grease to the matching surfaces (A) of the slide pin (1) and the bushing (2).

Install the bushing to the slide pin.

Apply Niglube RX-2 grease to the matching surfaces (A) of the slide pins (1) and the slide pin boots (2). Apply rubber grease to the outer surface of the slide pin boots.

Install the slide pins and slide pin boots to the torque member (3).

Install the brake caliper to the Nissan Sentra vehicle. Refer to Removal and Installation.