Nissan Sentra. Manual - part 143

BR-14

< BASIC INSPECTION >

REAR DISC BRAKE

REAR DISC BRAKE

BRAKE PAD
BRAKE PAD : Inspection

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PAD WEAR

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

using a scale if necessary.

DISC ROTOR
DISC ROTOR : Inspection

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APPERANCE

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 

RAX-5, "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 minimum thickness. 

Wear limit thickness

: Refer to 

BR-55, "Rear Disc 

Brake"

.

BRA0010D

Runout

: Refer to 

BR-55, "Rear 

Disc Brake"

.

Tool number

: 38-PFM92 ( — )

SBR019B

Minimum thickness

: Refer to 

BR-55, "Rear Disc 

Brake"

.

Thickness variation

: Refer to 

BR-55, "Rear Disc 

Brake"

.

SBR020B

BRAKE PEDAL

BR-15

< PERIODIC MAINTENANCE >

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PERIODIC MAINTENANCE

BRAKE PEDAL

Adjustment

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BRAKE PEDAL HEIGHT

1. Remove instrument lower panel LH. Refer to 

IP-21, "Removal and Installation"

.

2. Disconnect the harness connectors from the brake pedal position switch (if equipped) and the stop lamp

switch.

3. Turn the stop lamp switch and brake pedal position switch (if equipped) 45

° counterclockwise.

4. Loosen the input rod lock nut (1). Adjust the brake pedal height

to the specification.

CAUTION:

• Check the height with the floor trim removed.

• The threaded end of the input rod (2) must project to the

inner side (L) of the clevis (3).

5. Tighten the input rod lock nut to specification. Refer to 

BR-34, "Exploded View"

.

6. Check the brake pedal for smooth operation.

CAUTION:

The stop lamp must turn off when the brake pedal is released.

STOP LAMP SWITCH AND BRAKE PEDAL POSITION SWITCH

1. Remove instrument lower panel LH. Refer to 

IP-21, "Removal and Installation"

.

2. Disconnect the harness connectors from the brake pedal position switch (if equipped) and the stop lamp

switch.

3. Turn the stop lamp switch and brake pedal position switch (if equipped) 45

° counterclockwise.

4. With the threaded ends of the stop lamp switch (2) and brake

pedal position switch (if equipped) (1) contacting the pedal

bracket (3), turn the switches 45

° clockwise to lock in place.

Check that both the stop lamp switch (2) and brake pedal posi-

tion switch (if equipped) (1) contact ends to brake pedal bracket

(3) clearance (A) are within specification. 

CAUTION:

• Make sure that the clearance (A) between the brake pedal

bracket (3), stop lamp switch (2) and the brake pedal posi-

tion switch (1) contact ends are within specification. 

• The stop lamp must turn off when the brake pedal is

released.

JPFIA0003ZZ

Brake pedal height (H

1

) : Refer to 

BR-54, "Brake Ped-

al"

.

JPFIA0279ZZ

ALFIA0248ZZ

BR-16

< PERIODIC MAINTENANCE >

BRAKE PEDAL

Clearance (A) : Refer to 

BR-54, "Brake Pedal"

.

BRAKE FLUID

BR-17

< PERIODIC MAINTENANCE >

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BRAKE FLUID

Drain and Refill

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CAUTION:

• Do not spill or splash brake fluid on painted surfaces. Brake fluid may damage paint. If brake fluid is

splashed on painted areas, wash it away with water immediately.

• Prior to repair, turn the ignition switch OFF, disconnect the ABS actuator and electric unit (control

unit) connector or negative battery terminal. Refer to 

PG-50, "Exploded View"

.

• Refill brake system with new brake fluid. Refer to 

MA-11, "Fluids and Lubricants"

.

• Do not reuse drained brake fluid.

DRAINING

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector or nega-

tive battery terminal. Refer to 

PG-50, "Exploded View"

.

2. Connect a vinyl tube to bleeder valve.
3. Depress brake pedal, loosen bleeder valve, and gradually

remove brake fluid.

REFILLING

1. Make sure no foreign material exists in the reservoir and refill with new brake fluid. 

CAUTION:

Do not reuse drained brake fluid.

2. Refill the brake system as follows:

• Depress the brake pedal.

• Loosen bleeder valve.

• Slowly depress brake pedal to 2/3 of the brake pedal full stroke.

• Tighten bleeder valve.

• Release brake pedal.

Repeat this operation at intervals of two or three seconds until all old brake fluid is discharged. Add new

brake fluid to master cylinder reservoir sub tank frequently.

CAUTION:

Do not allow master cylinder reservoir to empty as this may cause damage to master cylinder

internal components.

3. Bleed the air out of the brake hydraulic system. Refer to 

BR-17, "Bleeding Brake System"

.

Bleeding Brake System

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CAUTION:

• Do not spill or splash brake fluid on painted surfaces. Brake fluid may damage paint. If brake fluid is

splashed on painted areas, wash it away with water immediately.

• While bleeding, pay attention to master cylinder fluid level.

• Before working, disconnect ABS actuator and electric unit (control unit) connectors or negative bat-

tery terminal. Refer to 

PG-50, "Exploded View"

.

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector or nega-

tive battery terminal. Refer to 

PG-50, "Exploded View"

.

2. Connect a vinyl tube to rear right brake bleeder valve.
3. Fully depress brake pedal 4 or 5 times.
4. With brake pedal depressed, loosen bleeder valve to bleed air in brake line, and then tighten it immedi-

ately.

BRA0007D