Infiniti QX56 (Z62). Manual - part 125

 

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Infiniti QX56 (Z62). Manual - part 125

 

 

BR-32

< REMOVAL AND INSTALLATION >

HYDRAULIC BOOSTER ASSEMBLY

• Apply new brake fluid to grommet of between reservoir tank and grommet and ABS actuator and electric unit

(control unit).

Inspection and Adjustment

INFOID:0000000006222486

ADJUSTMENT BEFORE INSTALLATION

Input Rod Length adjustment

1.

Loosen the lock nut (1) and adjust the input rod (2) to the speci-
fied length (A).

2.

Tighten the lock nut to the specified torque.

INSPECTION AFTER INSTALLATION

Operation Check

1.

Turn the ignition switch OFF.

2.

Depress the brake pedal 20 times or more.
NOTE:
The pressure loss in the accumulator results in a large brake pedal stroke. In addition to this, the brake
pedal depression becomes lighter in initial stage.

3.

Check that the fluid level in the reservoir tank is MAX line.

4.

Position the selector lever in P range to release the parking brake.

5.

Turn the ignition switch ON to check the time between motor activation and motor stop.

6.

After the motor is stopped, check that the ABS warning lamp and the VDC warning lamp in the combina-
tion meter are OFF when the engine is started.

7.

Stop the engine (ignition switch OFF).

8.

Turn the ignition switch ON and depress the brake pedal 4 to 5 times to check the time between motor
activation and motor stop.

9.

Turn the ignition switch OFF. Turn the ignition switch ON again. Check that the VDC warning lamp turns
ON when the brake pedal is depressed 15 to 20 times.

10. Check that the VDC warning lamp turns ON when the brake pedal is depressed 15 to 20 times after the

lapse of 120 seconds or more after the ignition switch is turned ON again.

11. Perform the self-diagnosis for “ABS” with CONSULT-III and erase all the stored self-diagnosis results.

Function Check

1.

Turn the ignition switch OFF.

2.

Depress the brake pedal 20 times or more.
NOTE:
The pressure loss in the accumulator results in a large brake pedal stroke. In addition to this, the brake
pedal depression becomes lighter in initial stage.

3.

Turn the ignition switch ON with the brake pedal depressed to check that the clearance between the brake
pedal and the dash lower panel decreases.

A

: Refer to 

BR-47, "Brake Booster"

.

JPFIA0728ZZ

Motor operating time

: 18 seconds or less

Motor operating time

: 2 

 11 seconds

HYDRAULIC BOOSTER ASSEMBLY

BR-33

< REMOVAL AND INSTALLATION >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

Disposal

INFOID:0000000006222487

1.

Remove accumulator (2) from motor/accumulator assembly (1).

2.

Fix the accumulator (1) to a vise.

CAUTION:

• Always set copper plates or cloth between vise grips

when fixing the accumulator to a vise. 

• Never overtighten the vise.

3.

Make a slit in the area (A) with a saw to release filler gas.

CAUTION:

• Wear eye protection (safety glasses).
• Wear gloves.
• A cut in the area must be made perpendicularly.
• Perform the procedure slowly.
• Cover with cloth to avoid sawdust to spatter.
NOTE:
The gas is clear colorless, odorless, and harmless.

JPFIA0754ZZ

A

: 50 mm (1.97 in)

JPFIA0768ZZ

BR-34

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

FRONT DISC BRAKE

BRAKE PAD

BRAKE PAD : Exploded View

INFOID:0000000006222488

BRAKE PAD : Removal and Installation

INFOID:0000000006222489

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 depress the brake pedal while removing the brake pads because the piston may pop out.
• 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.

Remove lower sliding pin bolt.

3.

Suspend the cylinder body with suitable wire so that the brake hose will not stretch.

4.

Remove the pad return springs (1). Then remove brake pads,
shims and shim covers.

CAUTION:

1.

Outer shim cover

2.

Outer shim

3.

Outer pad

4.

Torque member

5.

Pad retainer

6.

Pad return spring

7.

Inner pad (with pad wear sensor)

8.

Inner shim

9.

Inner shim cover

10.

Cylinder body

: Apply MOLYKOTE

®

 AS880N or silicone-based grease.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JPFIA0796GB

JPFIA0797ZZ

FRONT DISC BRAKE

BR-35

< REMOVAL AND INSTALLATION >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

• Never deform the pad retainer when removing the pad

retainers (2) from the torque member (1).

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

5.

Perform inspection after removal. Refer to 

BR-36, "BRAKE PAD

: Inspection"

.

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 depress the brake pedal while removing the brake pads because the piston may pop out.
• If the brake fluid or grease adheres to the brake caliper assembly and disc rotor, quickly wipe it off.

1.

Install the torque member if the pad retainers has been removed.

CAUTION:

• Securely assemble the pad retainers (1) so that it will not

be lifted up from the torque member (2).

• Never deform the pad retainers.

2.

Apply MOLYKOTE

®

 AS880N or silicone-based grease mating

faces (A and B) between the brake pad, shim and shim cover,
and install shim and shim cover to the brake pad.

CAUTION:

Always replace the shims and shim covers when replacing
the brake pad.

3.

Install the brake pads to the torque member.

4.

Install pad return springs (1).

CAUTION:

Correctly insert the pad return spring into the pad return
spring hole on the brake pad.

5.

Install cylinder body to torque member.

CAUTION:

• Never damage the piston boot.
• When replacing brake pad with new one, check a brake

fluid level in the reservoir tank because brake fluid
returns to reservoir tank when pressing piston in.

NOTE:
Use a disc brake piston tool to easily press piston.

6.

Install lower sliding bolt and tighter it to the specified torque.

JPFIA0118ZZ

PFIA0763J

JPFIA0798ZZ

JPFIA0797ZZ

 

 

 

 

 

 

 

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