2004 INFINITI QX56 Factory Service Manual

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Page 977 of 3371

INFINITI QX56 2004 Factory Service Manual BL-212
BODY REPAIR
Revision: August 20072004 QX56
Installation Notes
Scribe a straight line on the inner side rail crush horn along the hole center as shown in the figure. Cut off
inner side rail cru

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INFINITI QX56 2004 Factory Service Manual BODY REPAIR
BL-213
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Revision: August 20072004 QX56
Weld part to be butt-welded and seam-welded corner to corner as shown in the figure.
LIIA1089E

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INFINITI QX56 2004 Factory Service Manual BL-214
BODY REPAIR
Revision: August 20072004 QX56

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INFINITI QX56 2004 Factory Service Manual BR-1
BRAKE SYSTEM
F BRAKES
CONTENTS
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SECTION BR
A
B
BR
Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 3
Precautions for Suppl

BR-1
BRAKE SYSTEM
F BRAKES
CONTENTS
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SECTION BR
A
B
BR
Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Brake System .................................. 3
PREPARATION ........................................................... 4
Special Service Tool ................................................. 4
Commercial Service Tools ........................................ 4
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 5
NVH Troubleshooting Chart ..................................... 5
BRAKE PEDAL .......................................................... 6
Inspection and Adjustment ....................................... 6
INSPECTION ........................................................ 6
ADJUSTMENT ...................................................... 7
Removal and Installation .......................................... 8
REMOVAL ............................................................. 8
INSPECTION AFTER REMOVAL ......................... 9
INSTALLATION ..................................................... 9
BRAKE FLUID .......................................................... 10
On-board Inspection ............................................... 10
LEVEL CHECK ................................................... 10
Drain and Refill ....................................................... 10
Bleeding Brake System ...........................................11
BRAKE PIPING AND HOSE .................................... 12
Hydraulic Circuit ..................................................... 12
Removal and Installation of Front Brake Hose ....... 12
REMOVAL ........................................................... 12
INSTALLATION ................................................... 13
Removal and Installation of Rear Brake Hose ....... 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 13
Inspection After Installation .................................... 14
BRAKE MASTER CYLINDER .................................. 15
On-board Inspection ............................................... 15
LEAK INSPECTION ............................................ 15
Removal and Installation ........................................ 15
REMOVAL ........................................................... 15INSTALLATION ................................................... 16
Disassembly and Assembly .................................... 16
DISASSEMBLY ................................................... 16
ASSEMBLY ......................................................... 16
BRAKE BOOSTER ................................................... 17
On-Vehicle Service ................................................. 17
OPERATING CHECK .......................................... 17
AIRTIGHT CHECK .............................................. 17
Removal and Installation ........................................ 18
REMOVAL ........................................................... 18
INSPECTION AFTER REMOVAL ....................... 18
INSTALLATION ................................................... 19
VACUUM LINES ....................................................... 20
Removal and Installation ........................................ 20
Inspection ............................................................... 20
VISUAL INSPECTION ......................................... 20
CHECK VALVE INSPECTION ............................. 20
FRONT DISC BRAKE ............................................... 21
On-vehicle Inspection ............................................. 21
PAD WEAR INSPECTION ................................... 21
Components ........................................................... 21
Removal and Installation of Brake Pad .................. 22
REMOVAL ........................................................... 22
INSTALLATION ................................................... 22
Removal and Installation of Brake Caliper and Disc
Rotor ....................................................................... 22
REMOVAL ........................................................... 22
INSTALLATION ................................................... 23
Disassembly and Assembly of Brake Caliper
Assembly ................................................................ 23
DISASSEMBLY ................................................... 23
CALIPER INSPECTION ...................................... 24
ASSEMBLY ......................................................... 24
DISC ROTOR INSPECTION ............................... 25
BRAKE BURNISHING PROCEDURE ................. 25
REAR DISC BRAKE ................................................. 27
On-vehicle Inspection ............................................. 27
PAD WEAR INSPECTION ................................... 27
Components ........................................................... 27
Removal and Installation of Brake Pad .................. 28

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INFINITI QX56 2004 Factory Service Manual BR-2Revision: August 20072004 QX56 REMOVAL ........................................................... 28
INSTALLATION .................................................... 28
Removal and Installation

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INFINITI QX56 2004 Factory Service Manual PRECAUTIONS
BR-3
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Revision: August 20072004 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS0

PRECAUTIONS
BR-3
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Revision: August 20072004 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS003P3
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
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
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.
WA RN ING:
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.
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.
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.
Precautions for Brake SystemEFS0062U
Refer to MA-10, "RECOMMENDED FLUIDS AND LUBRICANTS" for recommended brake fluid.
Do not reuse drained brake fluid.
Be careful not to splash brake fluid on painted areas.
To clean or wash all parts of master cylinder, disc brake caliper and wheel cylinder, use clean brake fluid.
Do not use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.
Use flare nut wrench when removing and installing brake tube.
Always check tightening torque when installing brake lines.
Before working, turn ignition switch to OFF and disconnect con-
nectors for ABS actuator and electric unit (control unit) or battery
terminals.
Burnish the brake contact surfaces after refinishing or replacing
drums or rotors, after replacing pads or linings, or if a soft pedal
occurs at very low mileage. Refer to BR-25, "
BRAKE BURNISH-
ING PROCEDURE" .
WA RN ING:
Clean brake pads and shoes with a waste cloth, then wipe
with a dust collector.SBR6 86 C

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INFINITI QX56 2004 Factory Service Manual BR-4
PREPARATION
Revision: August 20072004 QX56
PREPARATIONPFP:00002
Special Service ToolEFS0062T
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

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INFINITI QX56 2004 Factory Service Manual NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
BR-5
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Revision: August 20072004 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting C

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