Infiniti FX35, FX50 (S51). Manual - part 236

FRONT DISC BRAKE

BR-41

< REMOVAL AND INSTALLATION >

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BRAKE PAD (4 PISTON TYPE) : Exploded View

INFOID:0000000005234198

BRAKE PAD (4 PISTON TYPE) : Removal and Installation

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REMOVAL

WARNING:

Clean any dust from the brake caliper and brake pads with a vacuum dust collector. Never blow with
compressed air.

CAUTION:

• Never depress the brake pedal while removing the brake pads because the piston may pop out.
• Never spill or splash brake fluid on the disc rotor and caliper.

1.

Remove tires with power tool.

2.

Remove clips (1) from pad pins.

1.

Clip

2.

Pad pin

3.

Inner shim

4.

Inner pad (with pad wear sensor)*

5.

Cross spring

6.

Caliper

7.

Outer pad

8.

Outer shim

*: Some vehicles has pad wear sensor only for one side.

: Apply copper based brake grease.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JPFIA0384ZZ

JPFIA0213ZZ

BR-42

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

3.

Remove pad pins while holding down cross spring, then remove
cross spring from caliper.

4.

Using pliers, remove brake pads and shims from caliper.

CAUTION:

• Never damage the piston boot.
• Never drop the brake pads, shims.
• Remember each position of the removed brake pads.

INSTALLATION

WARNING:

Clean any dust from the brake caliper and brake pads with a vacuum dust collector. Never blow with
compressed air.

CAUTION:

• Never depress the brake pedal while removing the brake pads because the piston may pop out.
• Never spill or splash brake fluid on the disc rotor and caliper.

1.

Apply copper based brake grease to the mating faces between the brake pads and shims, and install
shims to the brake pad.

CAUTION:

Always replace the shims together when replacing the brake pad.

2.

Apply copper based brake grease to the mating faces between the brake pads and caliper.

3.

Install brake pads to caliper.

CAUTION:

• Never damage the piston boot.
• In the case of 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 upper pad pin from the inner side, then install firmly to the outer side through the hole in the top of
brake pad.

5.

Place the top of cross spring (1) over the upper pad pin (2),
press in the cross spring, install lower pad pin from the inner
side to the outer side, and secure cross spring.

6.

Install clips to the pad pins. 

CAUTION:

If clip is not fully attached, pad pin or brake pad could fall
out while vehicle is in motion.

7.

Depress the brake pedal several times to check that no drag feel
is present for the front disc brake. Refer to 

BR-43, "BRAKE PAD

(4 PISTON TYPE) : Inspection"

.

JPFIA0214ZZ

JPFIA0215ZZ

JPFIA0216ZZ

FRONT DISC BRAKE

BR-43

< REMOVAL AND INSTALLATION >

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BRAKE PAD (4 PISTON TYPE) : Inspection

INFOID:0000000005234200

INSPECTION AFTER REMOVAL

Replace the shims if rust is excessively attached.

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 pistons.

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-

49, "BRAKE CALIPER ASSEMBLY (4 PISTON TYPE) : Disassembly and Assembly"

7.

Burnish contact surfaces brake pads and disc rotor after refinishing or replacing brake pads, or if a soft
pedal occurs at very low mileage. Refer to 

BR-14, "BRAKE PAD : Inspection and Adjustment"

.

BRAKE CALIPER ASSEMBLY (2 PISTON TYPE)

BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Exploded View

INFOID:0000000005234201

REMOVAL

DISASSEMBLY

1.

Brake caliper assembly

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPFIA0463GB

BR-44

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

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

INFOID:0000000005234202

REMOVAL

WARNING:

Clean any dust from the brake caliper and brake pads with a vacuum dust collector. Never blow with
compressed air.

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-10, "Draining"

.

CAUTION:

Never spill or splash brake fluid on the disc rotor.

4.

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

BR-

20, "FRONT : Exploded View"

.

5.

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

CAUTION:

Never drop brake pad 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:

Clean any dust from the brake caliper and brake pads with a vacuum dust collector. Never blow with
compressed air.

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.

JPFIA0329GB