Infiniti G37 Coupe. Manual - part 244

 

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Infiniti G37 Coupe. Manual - part 244

 

 

BR-14

< ON-VEHICLE MAINTENANCE >

BRAKE BOOSTER

BRAKE BOOSTER

Inspection

INFOID:0000000001647829

OPERATION

Depress the brake pedal several times at 5-second intervals with the
engine stopped. Start the engine with the brake pedal fully
depressed. Check that the clearance between brake pedal and dash
lower panel decreases.
NOTE:
A slight impact with a small click may be felt on the pedal when the
brake pedal is fully depressed. This is a normal phenomenon due to
the brake system operation.

AIR TIGHT

• Run the engine at idle for 1 minute to apply vacuum to the brake

booster, and stop the engine. Then depress the brake pedal sev-
eral times at 5-second intervals until the accumulated vacuum is
released to atmospheric pressure. Check that the clearance
between brake pedal and dash lower panel gradually increases (A

 B 

 C) each time the brake pedal is depressed when perform-

ing this operation.

• Depress the brake pedal with the engine running. Then stop the

engine while holding down the brake pedal. Check that the brake
pedal stroke does not change after holding down the brake pedal
for 30 seconds or more.
NOTE:
A slight impact with a small click may be felt on the pedal when the
brake pedal is fully depressed. This is a normal phenomenon due
to the brake system operation.

BRA0037D

JPFIA0043ZZ

JPFIA0044ZZ

FRONT DISC BRAKE

BR-15

< ON-VEHICLE MAINTENANCE >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

FRONT DISC BRAKE

BRAKE PAD

BRAKE PAD : Inspection

INFOID:0000000001647831

PAD WEAR

1 Piston Type

Check pad thickness from an inspection hole on cylinder body.
Check using a scale if necessary. 

4 Piston Type

Check pad thickness from an inspection hole on caliper. Check using
a scale if necessary. 

DISC ROTOR

DISC ROTOR : Inspection

INFOID:0000000001647832

APPEARANCE

Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace if there are.

RUNOUT

1.

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

2.

Inspect the runout with a dial gauge. [Measured at 10 mm (0.39
in) inside the disc edge.] 

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

FAX-4, "Inspection"

.

3.

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

4.

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

THICKNESS

Standard

Standard thickness

: Refer to 

BR-64, "Front 

Disc Brake"

Limit

Wear limit thickness

: Refer to 

BR-64, "Front 

Disc Brake"

MAA0439D

Standard

Standard thickness

: Refer to 

BR-64, "Front 

Disc Brake"

Limit

Wear limit thickness

: Refer to 

BR-64, "Front 

Disc Brake"

PFIA0228J

Limit

Runout limit

: Refer to 

BR-64, "Front 

Disc Brake"

BRA0580D

BR-16

< ON-VEHICLE MAINTENANCE >

FRONT DISC BRAKE

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

Limit

Wear limit thickness

: Refer to 

BR-64, "Front 

Disc Brake"

SBR020B

REAR DISC BRAKE

BR-17

< ON-VEHICLE MAINTENANCE >

C

D

E

G

H

I

J

K

L

M

A

B

BR

N

O

P

REAR DISC BRAKE

BRAKE PAD

BRAKE PAD : Inspection

INFOID:0000000001647834

PAD WEAR

1 Piston Type

Check pad thickness from an inspection hole on cylinder body.
Check using a scale if necessary.

2 Piston Type

Check pad thickness from an inspection hole on caliper. Check using
a scale if necessary.

DISC ROTOR

DISC ROTOR : Inspection

INFOID:0000000001647835

APPEARANCE

Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace if there are.

RUNOUT

1.

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

2.

Inspect the runout with a dial gauge. [Measured at 10 mm (0.39
in) inside disc edge.]

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

RAX-5, "Inspection"

.

3.

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

4.

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

THICKNESS

Standard

Standard thickness

: Refer to 

BR-64, "Rear 

Disc Brake"

Limit

Wear limit thickness

: Refer to 

BR-64, "Rear 

Disc Brake"

BRA0010D

Standard

Standard thickness

: Refer to 

BR-64, "Rear 

Disc Brake"

Limit

Wear limit thickness

: Refer to 

BR-64, "Rear 

Disc Brake"

PFIA0227J

Limit

Runout limit

: Refer to 

BR-64, "Rear 

Disc Brake"

BRA0697D

 

 

 

 

 

 

 

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