Infiniti QX56 (Z62). Manual - part 126

BR-36

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

7.

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

BR-36, "BRAKE PAD : Inspection"

.

8.

Install tires with power tool. Refer to 

WT-64, "Exploded View"

.

BRAKE PAD : Inspection

INFOID:0000000006222490

INSPECTION AFTER REMOVAL

• Replace the shims and shim covers if rust is excessively attached.
• Eliminate rust on the pad retainers and the torque member. Replace them 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. Refer to 

BR-34, "BRAKE PAD : Removal and Installation"

.

3.

Press the pistons. Refer to 

BR-34, "BRAKE PAD : Removal and Installation"

.

4.

Install brake pads. Refer to 

BR-34, "BRAKE PAD : Removal and Installation"

.

5.

Depress the brake pedal several times.

6.

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

BR-38,

"BRAKE CALIPER ASSEMBLY : 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-16, "BRAKE PAD : Inspection and Adjustment"

.

BRAKE CALIPER ASSEMBLY

BRAKE CALIPER ASSEMBLY : Exploded View

INFOID:0000000006222491

REMOVAL

DISASSEMBLY

1.

Brake caliper assembly

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPFIA0799GB

FRONT DISC BRAKE

BR-37

< REMOVAL AND INSTALLATION >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

BRAKE CALIPER ASSEMBLY : Removal and Installation

INFOID:0000000006222492

REMOVAL

WARNING:

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

CAUTION:

• Never 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.

• Never depress the brake pedal. Brake fluid may splash while removing the brake hose.
• If the brake fluid or grease adheres to the brake caliper assembly and disc rotor, quickly wipe it off.
1.

Remove tires with power tool.

2.

Fix the disc rotor using wheel nuts.

3.

Drain brake fluid. Refer to 

BR-10, "Draining"

.

4.

Separate brake hose from brake caliper assembly. Refer to 

BR-23, "FRONT : Removal and Installation"

.

5.

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

CAUTION:

Never drop brake pad and brake caliper assembly.

6.

Remove disc rotor. Refer to 

FAX-8, "Removal and Installation"

 (2WD), 

FAX-18, "Removal and Installation"

(AWD).

INSTALLATION

WARNING:

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

CAUTION:

• Never 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.

• Never depress the brake pedal. Brake fluid may splash while removing the brake hose.
• If the brake fluid or grease adheres to the brake caliper assembly and disc rotor, quickly wipe it off.

1.

Torque member

2.

Sliding pin boot

3.

Sliding pin

4.

Piston boot

5.

Piston

6.

Piston seal

7.

Cylinder body

8.

Bleeder valve

9.

Cap

: Apply rubber grease.

: Apply brake fluid.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JPFIA0800GB

BR-38

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

1.

Install disc rotor. Refer to 

FAX-8, "Removal and Installation"

 (2WD), 

FAX-18, "Removal and Installation"

(AWD).

2.

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

CAUTION:

Never spill or splash any grease and moisture on the torque member mounting face, threads,
mounting bolts. Wipe out any grease and moisture.

3.

Install brake hose to brake caliper assembly. Refer to 

BR-23, "FRONT : Removal and Installation"

.

4.

Perform the air bleeding. Refer to 

BR-11, "Bleeding Brake System"

.

5.

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

BR-39, "BRAKE CALIPER ASSEMBLY :

Inspection"

.

6.

Install tires with power tool. Refer to 

WT-64, "Exploded View"

.

BRAKE CALIPER ASSEMBLY : Disassembly and Assembly

INFOID:0000000006222493

DISASSEMBLY

NOTE:
Never remove the torque member, brake pads and pad retainers when disassembling and assembling the cyl-
inder body.

1.

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

CAUTION:

Fix the brake pad at suitable tape so that the brake pad will not drop.

2.

Remove sliding pin boots from torque member.

3.

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

CAUTION:

Never get fingers caught in the pistons.

4.

Remove piston seals from cylinder body using suitable tool.

CAUTION:

Be careful not to damage a cylinder inner wall.

5.

Remove bleeder valve and cap.

6.

Perform inspection after disassembly. Refer to 

BR-39, "BRAKE

CALIPER ASSEMBLY : Inspection"

.

ASSEMBLY

1.

Install bleeder valve and cap.

BRB0032D

JPFIA0781ZZ

FRONT DISC BRAKE

BR-39

< REMOVAL AND INSTALLATION >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

2.

Apply rubber grease to piston seals (1), and install them to cali-
per.

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 boots
securely into a groove on cylinder body.

CAUTION:

Never reuse piston boots.

4.

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

CAUTION:

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

5.

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

6.

Apply rubber grease to sliding pin, and install the cylinder body.

7.

Install sliding pin bolts and tighten it to the specified torque.
Refer to 

BR-34, "BRAKE PAD : Exploded View"

.

BRAKE CALIPER ASSEMBLY : Inspection

INFOID:0000000006222494

INSPECTION AFTER DISASSEMBLY

Check the following items and replace if necessary.

Cylinder Body

Check the cylinder inner wall for rust, wear, cracks or damage.

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.

Pistons

Check the surface of the piston for rust, wear, cracks or damage.

CAUTION:

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

Sliding Pin and Sliding Pin Boot

Check the sliding pins and sliding pin boots for rust, wear, cracks or damage.

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. Refer to 

BR-34, "BRAKE PAD : Removal and Installation"

.

JPFIA0032ZZ

JPFIA0782ZZ

JPFIA0034ZZ