Nissan Sentra. Manual - part 142

BR-10

< BASIC INSPECTION >

BRAKE MASTER CYLINDER

BRAKE MASTER CYLINDER

Inspection

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Check for brake fluid leakage at the following areas:

• Master cylinder mounting face

• Reservoir tank mounting face

• Brake tube and brake tube connections

• Brake hose and brake hose connections

If any brake fluid leakage is found, repair as necessary.

On Board Inspection

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LEAK INSPECTION

Check for leaks in the master cylinder installation surface, reservoir tank installation surface, and brake pipe

and hose connections.

BRAKE BOOSTER

BR-11

< BASIC INSPECTION >

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BRAKE BOOSTER

Inspection

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Operation

Depress the brake pedal several times at five 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 normal brake system opera-

tion.

Vacuum Inspection

Idle the engine for one minute to apply vacuum to the brake booster.

Stop the engine. Depress the brake pedal several times at five sec-

ond intervals until the accumulated vacuum is released to atmo-

spheric pressure. Check that the clearance between brake pedal

and dash lower panel gradually increases (A 

→ B → C) each time

the brake pedal is depressed during 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 normal brake system opera-

tion.

BRA0037D

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BR-12

< BASIC INSPECTION >

FRONT DISC BRAKE

FRONT DISC BRAKE

BRAKE PAD
BRAKE PAD : Inspection

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PAD WEAR

Check brake pad thickness from an inspection hole on caliper body.

Check using a scale if necessary.

DISC ROTOR
DISC ROTOR : Inspection

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APPEARANCE

Check surface of disc rotor for uneven wear, cracks or damage. Replace if any abnormal conditions exist.

RUNOUT

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

FAX-6, "Inspection"

.

2. Secure the disc rotor to the wheel hub and bearing assembly

with wheel nuts at two wheel nut locations.

3. Inspect the runout with a dial gauge, measured at 10 mm (0.39

in) inside the disc edge.

4. Find the installation position with 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.

5. Refinish the disc rotor if the runout is outside the limit even after

performing the above operation. When refinishing, use Tool.

THICKNESS

Check the thickness of the disc rotor using a micrometer. Replace

the disc rotor if the thickness is below the wear limit. 

Wear limit thickness

: Refer to 

BR-55, "Front Disc 

Brake"

.

BRA0010D

Runout

: Refer to 

BR-55, "Front Disc Brake"

.

Tool number

: 38-PFM92 ( — )

SBR019B

Wear thickness

: Refer to 

BR-55, "Front Disc 

Brake"

.

Thickness variation : Refer to 

BR-55, "Front Disc 

Brake"

.

SBR020B

REAR DRUM BRAKE

BR-13

< BASIC INSPECTION >

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REAR DRUM BRAKE

BRAKE LINING
BRAKE LINING : Inspection

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INSPECTION

Brake Lining

1. Check brake lining wear thickness (A). Check using a scale if

necessary.

BRAKE DRUM
BRAKE DRUM : Inspection

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INSPECTION

Appearance

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

BR-42, "Removal and Installation"

.

Brake Drum Inner Diameter

Check inner diameter (B) of the brake drum using suitable tool.

Lining wear thickness (A) : Refer to 

BR-55, "Rear 

Drum Brake"

.

SBR021A

Brake drum inner diameter (B) : Refer to 

BR-55, "Rear 

Drum Brake"

.

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