Infiniti G37 Coupe. Manual - part 254

 

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Infiniti G37 Coupe. Manual - part 254

 

 

BR-54

< ON-VEHICLE REPAIR >

REAR DISC BRAKE

2.

Remove clips from pad pins.

3.

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

4.

Using pliers, remove brake pads, shims and shim covers from
caliper.

CAUTION:

• Never damage the piston boot.
• Never drop the brake pad, shims, and the shim cover.

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.
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.
• 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.

2.

Install upper pad pin from the inner side, then install firmly to the outer side through the hole in the top of
brake pad.

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JPFIA0222ZZ

REAR DISC BRAKE

BR-55

< ON-VEHICLE REPAIR >

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3.

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

4.

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.

5.

Depress the brake pedal several times to check that no drag fell
is present for the rear disk brake.

6.

Install tires.

BRAKE PAD (2 PISTON TYPE) : Inspection and Adjustment

INFOID:0000000001647883

INSPECTION AFTER REMOVAL

Replace the shims and the shim cover if rust is excessively attached.

ADJUSTMENT AFTER INSTALLATION

Brake Burnishing Procedure

Burnish contact surfaces between pads according to following procedure after refinishing or replacing pads, or
if a soft pedal occurs at very low mileage.

CAUTION:

• Be careful of vehicle speed because the brake does not operate easily until pad and disc rotor are

securely fitted.

• Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1.

Drive vehicle on straight, flat road.

2.

Depress brake pedal with the power to stop vehicle within 3 to 5 seconds until the vehicle stops.

3.

Drive without depressing brake for a few minutes to cool the brake.

4.

Repeat steps 1 to 3 until pad and disc rotor are securely fitted.

BRAKE CALIPER ASSEMBLY (1 PISTON TYPE)

JPFIA0223ZZ

BR-56

< ON-VEHICLE REPAIR >

REAR DISC BRAKE

BRAKE CALIPER ASSEMBLY (1 PISTON TYPE) : Exploded View

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BRAKE CALIPER ASSEMBLY (1 PISTON TYPE) : Removal and Installation

INFOID:0000000001647885

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-11, "Draining"

.

CAUTION:

1.

Brake hose

2.

Union bolt

3.

Copper washer

4.

Cap

5.

Bleeder valve

6.

Sliding pin bolt

7.

Cylinder body

8.

Piston seal

9.

Piston

10.

Piston boot

11. Sliding pin boot

12.

Bushing

13.

Torque member

14. Inner shim cover

15.

Inner shim

16.

Inner pad

17. Pad wear sensor (RH inner pad 

only)

18.

Pad retainer

19.

Outer pad

20. Outer shim

 1: Apply rubber grease.

 2: Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease.

 3: Apply polyglycol ether based lubricant.

: Apply brake fluid.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

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REAR DISC BRAKE

BR-57

< ON-VEHICLE REPAIR >

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Never spill or splash brake fluid on the disc rotor.

4.

Remove union bolt (1) and then disconnect brake hose (2) from
caliper assembly.

5.

Remove torque member mounting bolts, and remove brake cali-
per assembly.

CAUTION:

Never drop brake pads and caliper assembly.

6.

Remove disc rotor.

CAUTION:

• Put matching marks on the wheel hub and bearing assem-

bly 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.

CAUTION:

Never depress the brake pedal. Brake fluid may splash while removing the brake hose.
1.

Install disc rotor.

CAUTION:

Align the matching marks that have been made 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 to brake caliper assembly, and tighten union bolts to the specified torque.

4.

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

BR-12, "Bleeding Brake System"

.

CAUTION:

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

5.

Check that no drag feel is present for the rear disc brake.

6.

Install tires.

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

INFOID:0000000001647886

DISASSEMBLY

NOTE:
The torque member, brake pads, shims, shim cover and pad retainers never need to be removed when disas-
sembling and assembling the cylinder body.
1.

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

CAUTION:

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

2.

Remove sliding pin boots from torque member.

3.

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

CAUTION:

Never get fingers caught in the piston.

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BRD0041D

 

 

 

 

 

 

 

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