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F BRAKES
A
SECTION
BRAKE SYSTEM
BR B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 3
. INSTALLATION .................................................. 14 . BR
Precautions for Supplemental Restraint System Inspection .............................................................. 14
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- BRAKE MASTER CYLINDER ................................. 16 .
SIONER" ................................................................. 3
. On-Board Inspection .............................................. 16 . G
Precautions for Brake System ................................. 3 . LEAK INSPECTION ........................................... 16 .
PREPARATION .......................................................... 4
. Removal and Installation ....................................... 16 .
Special Service Tool ................................................ 4
. REMOVAL .......................................................... 16
.
H
Commercial Service Tools ....................................... 4 . INSTALLATION .................................................. 16 .
NOISE, VIBRATION AND HARSHNESS (NVH) BRAKE BOOSTER .................................................. 18 .
TROUBLESHOOTING ............................................... 5 . On-board Inspection .............................................. 18 .
NVH Troubleshooting Chart .................................... 5 . OPERATING CHECK ......................................... 18 . I
BRAKE PEDAL ......................................................... 6
. AIRTIGHT CHECK ............................................. 18 .
Inspection and Adjustment ...................................... 6 . Removal and Installation ....................................... 19 .
PLAY AND CLEARANCE BETWEEN BRAKE COMPONENTS .................................................. 19 . J
PEDAL AND FLOOR PANEL WITH PEDAL REMOVAL .......................................................... 19
.
DEPRESSED ....................................................... 6
. INSTALLATION .................................................. 20 .
ADJUSTMENT ..................................................... 7. VACUUM LINES ...................................................... 21 .
K
Removal and Installation ......................................... 7. Component ............................................................ 21
.
COMPONENTS ................................................... 7 . Removal and Installation ....................................... 21 .
REMOVAL ............................................................ 8
. Inspection .............................................................. 21
.
INSPECTION AFTER REMOVAL ........................ 8 . VISUAL INSPECTION ........................................ 21 . L
INSTALLATION .................................................... 8
. CHECK VALVE INSPECTION ............................ 21 .
BRAKE FLUID ........................................................... 9
. FRONT DISC BRAKE .............................................. 23 .
On-board Inspection ................................................ 9
. On-board Inspection .............................................. 23 . M
CHECKING BRAKE FLUID LEVEL ..................... 9 . PAD WEAR INSPECTION .................................. 23 .
Drain and Refill ........................................................ 9
. Components .......................................................... 23
.
Bleeding Brake System ......................................... 10 . Removal and Installation of Brake Pad ................. 24 .
BRAKE TUBE AND HOSE .......................................11 . REMOVAL .......................................................... 24
.
Hydraulic Circuit .....................................................11
. INSTALLATION .................................................. 24 .
Front Brake Tube and Hose .................................. 12 . Removal and Installation of Brake Caliper Assembly
REMOVAL .......................................................... 12
. ... 25
INSTALLATION .................................................. 12. REMOVAL .......................................................... 25
.
Rear Brake Tube and Hose ................................... 13 . INSTALLATION .................................................. 25 .
REMOVAL .......................................................... 13
. Disassembly and Assembly of Brake Caliper
INSTALLATION .................................................. 13. Assembly ............................................................... 25
.
Inspection After Installation ................................... 13. DISASSEMBLY .................................................. 25 .
DUAL PROPORTIONING VALVE ........................... 14 . INSPECTION AFTER DISASSEMBLY ............... 26 .
Removal and Installation ....................................... 14 . ASSEMBLY ........................................................ 26.
REMOVAL .......................................................... 14
. DISC ROTOR INSPECTION .............................. 27 .
Brake Burnishing ................................................... 28
.
Revision: December 2006 BR-1 2007 Sentra
REAR DISC BRAKE ................................................ 29. REMOVAL ...........................................................37
.
On-board Inspection .............................................. 29
. INSPECTION AFTER REMOVAL .......................37 .
PAD WEAR INSPECTION .................................. 29 . INSTALLATION ...................................................38.
Components .......................................................... 29
. Removal and Installation of Wheel Cylinder ..........39 .
Removal and Installation of Brake Pad .................. 30 . REMOVAL ...........................................................39
.
REMOVAL .......................................................... 30
. INSTALLATION ...................................................39.
INSTALLATION ................................................... 30
. Disassembly and Assembly of Wheel Cylinder ......40 .
Removal and Installation of Caliper Assembly ...... 30 . DISASSEMBLY ...................................................40 .
REMOVAL .......................................................... 30
. INSPECTION AFTER DISASSEMBLY ...............40 .
INSTALLATION ................................................... 31
. ASSEMBLY .........................................................40
.
Disassembly and Assembly of Caliper Assembly ... 31 SERVICE DATA AND SPECIFICATIONS (SDS) .....41 .
DISASSEMBLY .................................................. 31
. General Specifications ...........................................41.
CALIPER INSPECTION ..................................... 33 . Brake Pedal ...........................................................41
.
ASSEMBLY ........................................................ 33
. Check Valve ...........................................................42
.
DISC ROTOR INSPECTION .............................. 34 . Brake Booster ........................................................42
.
Brake Burnishing ................................................... 35
. Dual Proportioning Valve .......................................42 .
REAR DRUM BRAKE .............................................. 36 . Front Disc Brake ....................................................42
.
Components .......................................................... 36
. Rear Disc Brake .....................................................43
.
Removal and Installation of Drum Brake Assembly 37 ... Rear Drum Brake ...................................................43
.
Revision: December 2006 BR-2 2007 Sentra
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EFS0079A
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
G To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. E
G Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. BR
G Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G
Precautions for Brake System EFS0079B
G Refill using recommended brake fluid. Refer to MA-14, "RECOMMENDED FLUIDS AND LUBRICANTS" .
H
G Never reuse drained brake fluid.
G Be careful not to splash brake fluid on painted surface of body. If brake fluid is splashed on painted sur-
faces of body immediately wipe it off with cloth and then wash it away with water.
I
G To clean or wash all parts of master cylinder, disc brake caliper and wheel cylinder, use new brake fluid.
G Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.
G Use a flare nut wrench when removing a brake tube and use a J
flare nut torque wrench when installing a brake tube.
G When installing brake tubes and hoses, be sure to check torque.
G Before working, turn ignition switch OFF and disconnect con- K
nectors of ABS actuator and electric unit (control unit) or the bat-
tery cable from the negative terminal.
G Burnish the new braking surfaces after refinishing or replacing L
drums or rotors, after replacing pads or linings, or if a soft pedal
occurs at very low mileage. Refer to BR-28, "Brake Burnishing"
.
SBR686C M
Revision: December 2006 BR-3 2007 Sentra
PREPARATION
PREPARATION PFP:00002
Special Service Tool EFS007AK
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number Description
(Kent-Moore No.)
Tool name
-- Measuring brake pedal height
(J-46532)
Brake and clutch pedal height mea-
surement tool
LFIA0227E
Commercial Service Tools EFS007AL
Tool name Description
1 Flare nut crowfoot Removing and installing each brake piping
2 Torque wrench a: 10 mm (0.39 in)/12mm (0.47 in)
S-NT360
Pin punch Removing and installing reservoir tank pin
Tip diameter: 4 mm (0.16 in) dia.
ZZA0515D
Brake fluid pressure gauge Measuring brake fluid pressure
NT151
Power tool Loosening nuts, bolts, and screws
PBIC0190E
PBIC0191E
Revision: December 2006 BR-4 2007 Sentra
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