Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti M45 Y34 2003-2004 Approved M45-Y34-2003 br
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BRAKE SYSTEM
F BRAKES
A
SECTION
BRAKE SYSTEM
BR B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 3. INSTALLATION .................................................. 13 . BR
Precautions for Supplemental Restraint System Disassembly and Assembly ................................... 14 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- DISASSEMBLY .................................................. 14 .
SIONER" ................................................................. 3
. INSPECTION AFTER DISASSEMBLY ............... 16 . G
Precautions for Brake System ................................. 3 . ASSEMBLY ........................................................ 16.
PREPARATION .......................................................... 4
. BRAKE BOOSTER .................................................. 21 .
Commercial Service Tools ....................................... 4 . On-Vehicle Service ................................................ 21.
H
NOISE, VIBRATION AND HARSHNESS (NVH) OPERATING CHECK ......................................... 21 .
TROUBLESHOOTING ............................................... 5 . AIRTIGHT CHECK ............................................. 21 .
NVH Troubleshooting Chart .................................... 5 . Removal and Installation ....................................... 21 .
BRAKE PEDAL ......................................................... 6. REMOVAL .......................................................... 21
. I
Inspection and Adjustment ...................................... 6 . INSPECTION AFTER REMOVAL ...................... 21 .
PLAY AND CLEARANCE BETWEEN THE INSTALLATION .................................................. 22 .
BRAKE PEDAL AND FLOOR PANEL WITH VACUUM LINES ...................................................... 23 . J
PEDAL DEPRESSED .......................................... 6 . Inspection .............................................................. 23
.
ADJUSTMENT ..................................................... 7 . VISUAL INSPECTION ........................................ 23 .
Removal and Installation ......................................... 7 . CHECK VALVE INSPECTION ............................ 23 .
K
COMPONENT PARTS DRAWING ....................... 7 . FRONT DISC BRAKE .............................................. 24 .
REMOVAL ............................................................ 8
. On-board Inspection .............................................. 24 .
INSPECTION AFTER REMOVAL ........................ 8 . PAD WEAR INSPECTION .................................. 24 .
INSTALLATION .................................................... 8 . Components (CLZ31VA Type) ............................... 24 . L
BRAKE FLUID ........................................................... 9
. Pad Replacement .................................................. 25 .
Checking Brake Fluid Level .................................... 9 . REMOVAL .......................................................... 25
.
Drain and Refill ........................................................ 9
. INSTALLATION .................................................. 26 . M
Bleeding Brake System ........................................... 9 . Removal and Installation of Caliper Assembly ...... 27 .
BRAKE PIPING AND HOSE ....................................11 . REMOVAL .......................................................... 27
.
Hydraulic Circuit .....................................................11
. INSTALLATION .................................................. 27 .
Front Brake Piping and Hose .................................11 . Disassembly and Assembly of Caliper Assembly ... 27
REMOVAL ...........................................................11
. DISASSEMBLY .................................................. 27 .
INSTALLATION ...................................................11 . CALIPER INSPECTION ..................................... 28 .
Rear Brake Piping and Hose ................................. 12 . ASSEMBLY ........................................................ 28.
REMOVAL .......................................................... 12
. DISC ROTOR INSPECTION .............................. 29 .
INSTALLATION .................................................. 12 . Brake Burnishing Procedure .................................. 30 .
Inspection .............................................................. 12
. REAR DISC BRAKE ................................................ 31 .
BRAKE MASTER CYLINDER ................................. 13 . On-board Inspection .............................................. 31 .
Components .......................................................... 13
. PAD WEAR INSPECTION .................................. 31 .
Removal and Installation ....................................... 13 . Component (AD14VD Type) .................................. 31 .
REMOVAL .......................................................... 13
. Pad Replacement .................................................. 32 .
REMOVAL .......................................................... 32
.
INSTALLATION .................................................. 33 .
Revision; 2004 April BR-1 2003 M45
Removal and Installation of Caliper Assembly ...... 33 . SERVICE DATA AND SPECIFICATIONS (SDS) .....37 .
REMOVAL .......................................................... 33
. General Specifications ...........................................37 .
INSTALLATION ................................................... 33
. Brake pedal ............................................................37
.
Disassembly and Assembly of Caliper Assembly ... 34 Check valve ...........................................................37
.
DISASSEMBLY .................................................. 34
. Brake booster .........................................................37
.
INSPECTION AFTER DISASSEMBLY ............... 35 . Front disc brake .....................................................37
.
ASSEMBLY ........................................................ 35
. Rear disc brake ......................................................37
.
DISC ROTOR INSPECTION .............................. 36 .
Revision; 2004 April BR-2 2003 M45
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AFS00266
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
q 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
q 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
q 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 AFS000JU
q Recommended fluid is brake fluid "DOT 3".
H
q Never reuse drained brake fluid.
q Be careful not to splash brake fluid on painted areas.
q To clean or wash all parts of master cylinder, disc brake caliper and wheel cylinder, use clean brake fluid. I
q Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.
q Use flare nut wrench when removing and installing brake tube.
q Always torque brake lines when installing. J
q Before working, turn the ignition switch OFF and disconnect the
connectors for the VDC actuator or the battery cables.
q Burnish the brake contact surfaces after refinishing or replacing K
drums or rotors, after replacing pads or linings, or if a soft pedal
occurs at very low mileage.
Refer to BR-30, "Brake Burnishing Procedure" . L
WARNING:
q Clean brake pads and shoes with a waste cloth, then wipe SBR686C
with a dust collector.
M
Revision; 2004 April BR-3 2003 M45
PREPARATION
PREPARATION PFP:00002
Commercial Service Tools AFS000JV
Tool name Description
1.Flare nut crowfoot Removing and installing each brake
a:10 mm (0.39 in) piping
2.Torque wrench
S-NT360
Revision; 2004 April BR-4 2003 M45
Symptom
X: Applicable
Reference page
BRAKE
Possible cause and
SUSPECTED PARTS
Revision; 2004 April
Noise
Shake
Shimmy, Judder
NVH Troubleshooting Chart
Pads - damaged BR-24, BR-31
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