length INFINITI QX56 2008 Factory Service Manual

QUICK REFERENCE CHART: QX56
2008
Brake SpecificationsINFOID:0000000006237755
Unit: mm (in)
Brake PedalINFOID:0000000006237756
Unit: mm (in)
CAUTION:
When equipped with adjustable pedal, the pedal must be in the forward most position (closest to the floor) for pedal height
adjustment. Front brake Brake model AD41VA
Rotor outer diameter × thickness 350 x 30 (13.78 x 1.181)
Pad Length × width × thickness 151.6 x 56.5 x 12.0 (5.97 x 2.22 x 0.476)
Cylinder bore diameter 50.8 (2.00)
Rear brake Brake model AD14VE Rotor outer diameter × thickness 320 x 14 (12.60 x 0.551)
Pad Length × width × thickness 83.0 x 33.0 x 12.0 (3.268 x 1.299 x 0.472)
Cylinder bore diameter 48 (1.89)
Control valve Valve model Electric brake force distribution
Brake booster Booster model C215T
Diaphragm diameter 215 (8.46)
Pedal free height (H) with pedal in forward most position 182.3 - 192.3 (7.18 - 7.57)
Pedal travel (T) 153.3 (6.04)
Stop lamp switch and ASCD cancel switch threaded end to brake pedal bracket gap 0.74 - 1.96 (0.029 - 0.077)
ALFIA0149ZZ

BR-26
< ON-VEHICLE REPAIR >
BRAKE BOOSTER
BRAKE BOOSTER
Removal and InstallationINFOID:0000000004894511
CAUTION:
• Be careful not to deform or bend brake piping while removing and installing brake booster.
• Replace clevis pin if it is damaged.
• Be careful not to damage brake booster stud bolt threads. If brake booster is tilted or inclined during
installation, dash panel may damage the threads.
• Attach the check valve in the correct direction.
REMOVAL
1. Remove air duct and resonator assembly. Refer to EM-25, "Removal and Installation".
2. Remove cowl top assembly. Refer to EXT-18, "
Removal and Installation".
3. Remove master cylinder assembly from brake booster. Refer to BR-25, "
Removal and Installation".
4. Remove vacuum hose from brake booster. Refer to BR-28, "
Removal and Installation".
5. Disconnect active booster and delta stroke s ensor harness connectors from brake booster.
6. Remove the instrument lower panel LH. Refer to IP-11, "
Exploded View".
7. Remove brake pedal to clevis attachment snap pin and clevis pin from inside the vehicle.
8. Remove brake booster to brake pedal assembly nuts.
9. Reposition the A/C line out of the way.
10. Remove brake booster and spacer from dash panel.
INSPECTION AFTER REMOVAL
Output Rod Length Inspection
1. Reservoir tank 2. Master cylinder assembly3. Gasket
4. Brake pedal 5. Lock nut 6. Spacer block
7. Brake booster 8. Active booster9. Delta stroke sensor
AWFIA0416GB
Revision: March 2010 2008 QX56

BRAKE BOOSTERBR-27
< ON-VEHICLE REPAIR >
C
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G H
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M A
B
BR
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O P
1. Using a hand vacuum pump, apply a vacuum of – 66.7 kPa (– 500 mmHg, –19.69 inHg) to brake booster.
2. Check output rod length.
INSTALLATION
1. Loosen lock nut to adjust input r od length so that the length (B)
is set at the specified value.
2. After adjusting length (B), temporarily tighten lock nut and install brake booster and spacer block.
• Install the gaskets and spacer block between brake boosterand dash panel.
3. Connect brake pedal to clevis on the input rod.
4. Install brake booster to brake pedal assembly nuts and tighten to the specified torque.
5. Connect active booster and delta stroke s ensor harness connectors to brake booster.
6. Connect vacuum hose to brake booster.
7. Install master cylinder assembly to brake booster. Refer to BR-25, "
Removal and Installation".
8. Adjust the height and play of brake pedal. Refer to BR-15, "
Inspection and Adjustment".
9. Tighten lock nut of input rod to specification.
10. Install the instrument lower panel LH. Refer to IP-11, "
Exploded View".
11. Secure A/C line into clips.
12. Install cowl top assembly. Refer to EXT-18, "
Removal and Installation".
13. Install air duct and resonator assembly. Refer to EM-25, "
Removal and Installation".
14. Refill with new brake fluid and bleed air. Refer to BR-17, "
Bleeding Brake System".
Output rod length : Refer to
BR-46, "
Brake
Booster".
SBR208E
Input rod length (B) : Refer to BR-46, "Brake
Booster".
WFIA0382E
Revision: March 2010 2008 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)BR-45
< SERVICE DATA AND SPECIFICATIONS (SDS)
C
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M A
B
BR
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000004894499
Unit: mm (in)
Brake PedalINFOID:0000000004894500
Unit: mm (in)
CAUTION:
When equipped with adjustable pedal, the pedal must be in the forward most position (closest to the floor) for pedal height
adjustment. Front brake Brake model
AD41VA
Rotor outer diameter × thickness 350 x 30 (13.78 x 1.181)
Pad Length × width × thickness 151.6 x 56.5 x 12.0 (5.97 x 2.22 x 0.476)
Cylinder bore diameter 50.8 (2.00)
Rear brake Brake model AD14VE
Rotor outer diameter × thickness 320 x 14 (12.60 x 0.551)
Pad Length × width × thickness 83.0 x 33.0 x 12.0 (3.268 x 1.299 x 0.472)
Cylinder bore diameter 48 (1.89)
Control valve Valve model Electric brake force distribution
Brake booster Booster model C215T
Diaphragm diameter 215 (8.46)
Recommended brake fluid Refer to MA-12, "
Fluids and Lubricants".
Pedal free height (H) with pedal in forward most position 182.3 - 192.3 (7.18 - 7.57)
Pedal travel (T) 153.3 (6.04)
Stop lamp switch and ASCD cancel switch threaded end to brake pedal bracket gap 0.74 - 1.96 (0.029 - 0.077)
ALFIA0149ZZ
Revision: March 2010 2008 QX56

BR-46
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Brake Booster
INFOID:0000000004894501
Unit: mm (in)
Check ValveINFOID:0000000004894502
Front Disc BrakeINFOID:0000000004894503
Unit: mm (in)
Rear Disc BrakeINFOID:0000000004894504
Unit: mm (in)
Output rod length [at -66.7 kPa (-500 mmHg, -19.69 inHg) vacuum] 15.6 - 15.9 (0.614 - 0.626)
Input rod installation length (B) 151 (5.94)
SBR208E
WFIA0382E
Vacuum leakage
[at vacuum of – 66.7 kPa(– 500 mmHg, – 19.69 inHg)]Within 1.3 kPa (10 mmHg, 0.39 inHg) of vacuum for 15 seconds
Brake model
AD41VA
Brake pad Standard thickness (new)
12.0 (0.476)
Repair limit thickness 1.0 (0.039)
Disc rotor Standard thickness (new)
30 (1.181)
Repair limit thickness 28 (1.102)
Maximum uneven wear (measured at 8 positions) 0.015 (0.0006)
Runout limit (with it attached to the vehicle) 0.03 (0.001)
Brake model AD14VE
Brake pad Standard thickness (new)
12.0 (0.472)
Repair limit thickness 1.0 (0.039)
Revision: March 2010 2008 QX56

BRM-18
< SERVICE INFORMATION >
BODY REPAIR
A mark has been placed on each body panel to indicate the parts matching positions. When repairing parts
damaged by an accident which might affect the vehicle st ructure (members, pillars, etc.), more accurate and
effective repair will be possible by using these marks together with body alignment specifications.
DESCRIPTION
• All dimensions indicated in the figures are actual.
• When using a tracking gauge, adjust both pointers to equal length. Then check the pointers and gauge itself
to make sure there is no free play.
• When a measuring tape is used, check to be sure there is no elongation, twisting or bending.
• Measurements should be taken at the center of the mounting holes.
• An asterisk (*) following the value at the measuring point indicates that the measuring point on the other side
is symmetrically the same value.
• The coordinates of the measurement points are the di stances measured from the standard line of "X", "Y"
and "Z".
WIIA0284E
Revision: March 2010 2008 QX56

DLK-120
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
AUTOMATIC BACK DOOR SELF-DIAGNOSIS PROCEDURE
9. Within 8 seconds of the back door warning chime
sounding, press the power liftgate switch 5 times in
rapid succession.
10. After approximately 5 seconds, the back door warning chime will sound for 1 second.
11. Release the power liftgate switch.
12. Immediately close the back door manually.
13. Press and release the power liftgate swit ch to activate the operating check mode.
Self-diagnosis results are indicated by the back door warning chime.
Turn ignition switch OFF to end input signal check mode.
Back door warning chime order Back door warning chime length
Start self-diagnosis 1.5 seconds
OK NG
1. Operating conditions diagnosis 0.5 second0.2 second
2. Back door encoder diagnosis 0.5 second0.2 second
3. Back door clutch diagnosis 0.5 second0.2 second
4. Back door motor diagnosis 0.5 second0.2 second
5. Cinch latch motor diagnosis 0.5 second0.2 second
Restart self-diagnosis 1.5 seconds
ItemNG ResultRefer to
1. Operating conditions diagnosis result One of the following operating conditions no
longer met: ignition switch ON, back door close
switch (CANCEL) ON, A/T shift selector lever
in P position—
2. Back door encoder diagnosis result Sensor diagnosis/short, pulse signal, pulse
signal directionDLK-236
3. Back door clutch diagnosis result
Back door clutch does not operateDLK-236
4. Back door motor diagnosis result Back door motor does not operate (no operat-
ing current)
DLK-236
5. Cinch latch motor diagnosis result Cinch latch motor does not operate (no operat-
ing current)DLK-236
Revision: March 2010
2008 QX56

DLN-160
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
• Check each control valve spring for damage or distortion. Also
check its free length, outer diameter and wire diameter. If any dam-
age or fatigue is found, replace the control valve body with a new
one. Refer to DLN-140, "
Disassembly and Assembly".
CAUTION:
Replace control valve body togeth er with clutch return spring
as a set.
Clutch
• Check the drive plate facings and driven plate for damage, cracks or other abnormality. If any abnormalities are found, replace with a
new one.
• Check the thickness of the drive plate facings and driven plate.
Refer to DLN-140, "
Disassembly and Assembly".
CAUTION:
• Measure facing thickness at 3 points to take an average.
• Check all drive and driven plates.
• Check return spring for damage or deformation.
• Do not remove spring from plate.
Return Spring
• Check the stamped mark shown. T hen, check that the free lengths,
(include thickness of plate) are within specifications. If any abnor-
mality is found, replace with a new return spring assembly of the
same stamped number. Refer to DLN-140, "
Disassembly and
Assembly".
ASSEMBLY
Center Case
1. Apply ATF to the new O-ring, and install it on the oil filter stud.
CAUTION:
Do not reuse O-rings.
2. Install the oil filter stud to the oil filter.
SMT948C
SMT949C
SDIA2176E
SDIA3180E
Revision: March 2010 2008 QX56

DLN-178
< SERVICE DATA AND SPECIFICATIONS (SDS) [ATX14B]
SERVICE DATA AND SPECIFICATIONS (SDS)
Main Oil Pump
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Control Valve
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Control Valve Spring
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Return Spring
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.Gear thickness
Part number*
Inner gear Outer gear
8.27 - 8.28 (0.3256 - 0.3260) 31346 7S11231347 7S112
8.28 - 8.29 (0.3260 - 0.3264) 31346 7S11131347 7S111
8.29 - 8.30 (0.3264 - 0.3268) 31346 7S11031347 7S110
Mounting position
(Part name) Part number*
Outer dia.Overall length
L1
(2-4 shift valve) 31772 21X00
8.0 (0.315)38.5 (1.516)
L2
(Clutch valve) 31772 80X11
10.0 (0.394)40.0 (1.575)
L4
(Pilot valve) 31772 80X11
10.0 (0.394)40.0 (1.575)
L5
(Regulator valve) 31741 0W410
12.0 (0.472)68.0 (2.677)
Mounting position
(Part name) Part number* Free length Outer dia. Overall length
L1
(2-4 shift valve spring) 31742 2W500 31.85 (1.2539) 7.0 (0.276) 0.6 (0.024)
L2
(Clutch valve spring) 31742 2W505 40.6 (1.598) 8.9 (0.350) 0.7 (0.028)
L4
(Pilot valve spring) 31742 0W410 28.1 (1.106) 9.0 (0.354) 1.2 (0.047)
L5
(Regulator valve spring) 31742 2W515 39.7 (1.563) 11.0 (0.433) 1.3 (0.051)
Stamped mark
Part number*Free length
1 31521 7S11142.7 (1.168)
2 31521 7S11243.1 (1.697)
3 31521 7S11343.6 (1.717)
4 31521 7S11444.0 (1.731)
Revision: March 2010 2008 QX56

DLN-188
< SERVICE DATA AND SPECIFICATIONS (SDS) [PROPELLER SHAFT: 2F1310]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000001604430
Unit: mm (in)
Propeller Shaft Runout
Unit: mm (in)
Propeller Shaft Joint Flex Effort
Unit: N·m (kg-m, in-lb)
Journal Axial Play
Unit: mm (in)
Snap RingINFOID:0000000001604431
Model 2F1310
Unit: mm (in)
*Always check with the Parts Department for the latest parts information.Applied model
4WD
VK56DE A/T
Propeller shaft model 2F1310
Number of joints 2
Coupling method with front final drive Flange type
Coupling method with transfer Flange type
Shaft length (Spider to spider) 696 (27.40)
Shaft outer diameter 63.5 (2.5)
ItemLimit
Propeller shaft runout 0.6 (0.024)
ItemLimit
Propeller shaft joint flex effort 1.96 (0.20, 17) or less
ItemLimit
Journal axial play 0.02 (0.0008)
ThicknessColorPart Number*
1.99 (0.0783) White37146-C9400
2.02 (0.0795) Yellow37147-C9400
2.05 (0.0807) Red37148-C9400
2.08 (0.0819) Green37149-C9400
2.11 (0.0831) Blue37150-C9400
2.14 (0.0843) Light brown 37151-C9400
2.17 (0.0854) Black37152-C9400
2.20 (0.0866) No paint37153-C9400
Revision: March 2010 2008 QX56