Infiniti QX56 (Z62). Manual - part 121

BR-16

< PERIODIC MAINTENANCE >

FRONT DISC BRAKE

FRONT DISC BRAKE

BRAKE PAD

BRAKE PAD : Inspection and Adjustment

INFOID:0000000006222468

INSPECTION

Check the thickness of brake pad from the inspection hole (A) on
brake caliper assembly. Check use a scale if necessary.

ADJUSTMENT

CAUTION:

• Burnish contact surfaces between pads according to the following procedure after refinishing or

replacing brake pads, or if a soft pedal occurs at very low mileage.

• Be careful of vehicle speed because the brake does not operate firmly/securely until pads 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.

DISC ROTOR

DISC ROTOR : Inspection and Adjustment

INFOID:0000000006222469

INSPECTION

Appearance

Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace it if necessary. Refer to

FAX-8, "Removal and Installation"

 (2WD), 

FAX-18, "Removal and Installation"

 (AWD).

Runout

1.

Fix the disc rotor to the wheel hub and bearing assembly with wheel nuts (2 points at least).

2.

Check the wheel bearing axial end play before the inspection. Refer to 

FAX-7, "Inspection"

 (2WD), 

FAX-

16, "Inspection"

 (AWD).

3.

Inspect the runout with a dial indicator to measure at 10 mm
(0.39 in) inside the disc edge.

4.

Find the installation position that has a minimum runout by shift-
ing the disc rotor-to-wheel hub and bearing assembly installation
position by one hole at a time if the runout exceeds the limit
value.

5.

Refinish the disc rotor if the runout is outside the limit even after
performing the above operation. [When refinishing, use the Pro-
Cut PEM On-Car brake Lathe (Tool No. 38-PFM90.5) or equiva-
lent.]

CAUTION:

Wear thickness

: Refer to 

BR-47, "Front Disc Brake"

.

JPFIA0793ZZ

Runout

: Refer to 

BR-47, "Front Disc Brake"

.

JPFIA0718ZZ

FRONT DISC BRAKE

BR-17

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• Check in advance that the thickness of the disc rotor is wear thickness + 0.3 mm (0.012 in) or

more.

• If the thickness is less than wear thickness + 0.3 mm (0.012 in), replace the disc rotor. Refer to

FAX-8, "Removal and Installation"

 (2WD), 

FAX-18, "Removal and Installation"

.

Thickness

Check the thickness of the disc rotor using a micrometer. Replace
the disc rotor if the thickness is below the wear limit. Refer to 

FAX-8,

"Removal and Installation"

 (2WD), 

FAX-18, "Removal and Installa-

tion"

 (4WD).

ADJUSTMENT

CAUTION:

• Burnish contact surfaces between pads according to the following procedure after refinishing or

replacing brake pads, or if a soft pedal occurs at very low mileage.

• Be careful of vehicle speed because the brake does not operate firmly/securely until pads 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.

Wear thickness

: Refer to 

BR-47, "Front Disc Brake"

.

Wear thickness

: Refer to 

BR-47, "Front Disc Brake"

.

JPFIA0719ZZ

BR-18

< PERIODIC MAINTENANCE >

REAR DISC BRAKE

REAR DISC BRAKE

BRAKE PAD

BRAKE PAD : Inspection and Adjustment

INFOID:0000000006222470

INSPECTION

Check the thickness of brake pad from the inspection hole (A) on
brake caliper assembly. Check use a scale if necessary.

ADJUSTMENT

CAUTION:

• Burnish contact surfaces between pads according to the following procedure after refinishing or

replacing brake pads, or if a soft pedal occurs at very low mileage.

• Be careful of vehicle speed because the brake does not operate firmly/securely until pads 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.

DISC ROTOR

DISC ROTOR : Inspection and Adjustment

INFOID:0000000006222471

INSPECTION

Appearance

Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace it if necessary. Refer to

RAX-7, "Removal and Installation"

.

Runout

1.

Fix the disc rotor to the wheel hub and bearing assembly with wheel nuts (2 points at least).

2.

Check the wheel bearing axial end play before the inspection. Refer to 

RAX-5, "Inspection"

.

3.

Inspect the runout with a dial indicator to measure at 10 mm
(0.39 in) inside the disc edge.

4.

Find the installation position that has a minimum runout by shift-
ing the disc rotor-to-wheel hub and bearing assembly installation
position by one hole at a time if the runout exceeds the limit
value.

5.

Refinish the disc rotor if the runout is outside the limit even after
performing the above operation. [When refinishing, use the Pro-
Cut PEM On-Car brake Lathe (Tool No. 38-PFM90.5) or equiva-
lent.]

CAUTION:

• Check in advance that the thickness of the disc rotor is wear thickness + 0.3 mm (0.012 in) or

more.

Wear thickness

: Refer to 

BR-47, "Rear Disc Brake"

.

JPFIA0720ZZ

Runout

: Refer to 

BR-47, "Rear Disc Brake"

.

JPFIA0721ZZ

REAR DISC BRAKE

BR-19

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• If the thickness is less than wear thickness + 0.3 mm (0.012 in), replace the disc rotor. Refer to

RAX-7, "Removal and Installation"

.

Thickness

Check the thickness of the disc rotor using a micrometer. Replace
the disc rotor if the thickness is below the wear limit. Refer to 

RAX-7,

"Removal and Installation"

.

ADJUSTMENT

CAUTION:

• Burnish contact surfaces between pads according to the following procedure after refinishing or

replacing brake pads, or if a soft pedal occurs at very low mileage.

• Be careful of vehicle speed because the brake does not operate firmly/securely until pads 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.

Wear thickness

: Refer to 

BR-47, "Rear Disc Brake"

.

Wear thickness

: Refer to 

BR-47, "Rear Disc Brake"

.

JPFIA0722ZZ