lock INFINITI QX56 2008 Factory Service Manual

AIR BREATHER HOSETM-197
< ON-VEHICLE REPAIR >
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AIR BREATHER HOSE
Removal and InstallationINFOID:0000000004917433
VK56DE Models 2WD
CAUTION:
• Install air breather hose with paint mark at upper side.
• When installing the air breather hose, do not crush or block by folding or bending the hose.
• When inserting the hose to the tran smission tube, be sure to insert it fully until its end reaches the
tube bend portion.
• Make sure clip is securely installed to bracket.
VK56DE Models 4WD
LCIA0331E
Revision: March 2010 2008 QX56

TM-198
< ON-VEHICLE REPAIR >
AIR BREATHER HOSE
CAUTION:
• Install air breather hose with paint mark at upper side.
• When installing the air breather hose, do not crush or block by folding or bending the hose.
• When inserting the hose to the tran smission tube, be sure to insert it fully until its end reaches the
tube bend portion.
• Make sure clip is securely installed to bracket.
Revision: March 2010 2008 QX56

TRANSMISSION ASSEMBLYTM-215
< REMOVAL AND INSTALLATION >
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8. Remove crankshaft position sens or (POS) from A/T assembly.
CAUTION:
• Do not subject it to impact by dropping or hitting it.
• Do not disassemble.
• Do not allow metal filings or foreign material to get on the
sensor front edge magnetic area.
• Do not place in an area affected by magnetism.
9. Remove fluid cooler tube.
10. Remove dust cover from converter housing.
11. Turn crankshaft to access and remove the four bolts for drive plate and torque converter.
CAUTION:
When turning crankshaft, turn it clockwise as viewed from
the front of the engine.
12. Support A/T assembly with a transmission jack. CAUTION:
When setting the transmission jack, be careful not to allow
it to collide agai nst the drain plug.
13. Remove cross member using power tool.
14. Remove air breather hose. Refer to TM-197, "
Removal and
Installation".
15. Disconnect A/T assembly connector.
16. Remove A/T fluid indicator pipe from A/T assembly.
17. Plug any openings such as the A/T fluid indicator pipe hole.
18. Remove the A/T assembly to engine bolts using power tool.
19. Remove A/T assembly from vehicle using transmission jack. CAUTION:
• Secure torque converter to prevent it from dropping.
• Secure A/T assembly to a transmission jack.
INSPECTION
Installation and Inspection of Torque Converter
• After inserting a torque converter to a transmission, be sure to check dimension A to ensure it is within specifications.
INSTALLATION
Installation of the remaining components is in the revers e order of the removal, while paying attention to the
following:
LCIA0334E
LCIA0335E
SCIA0499E
Dimension A : 24.0 mm (0.94 in) or more
SAT017B
Revision: March 2010 2008 QX56

TM-216
< REMOVAL AND INSTALLATION >
TRANSMISSION ASSEMBLY
• When installing transmission to the engine, attach the bolts in the order as shown.CAUTION:
• When replacing an engine or transmission you must make
sure the dowels are installe d correctly during re-assembly.
• Improper alignment caused by missing dowels may cause
vibration, oil leaks or breakage of drivetrain components.
NOTE:
*: No.2 bolt also secures air breather vent.
CAUTION:
• When turning crankshaft, turn it clockwi se as viewed from the front of the engine.
• After converter is installed to drive plate, rota te crankshaft several turns and check to be sure that
transmission rotates fr eely without binding.
NOTE:
• Align the positions of bolts for drive plate with those of the torque converter, and temporarily tighten the bolts. Then tighten the bolts
with the specified torque.
• Install crankshaft pos ition sensor (POS).
• After completing installation check fluid leakage, fluid level and the positions of A/T. Refer to TM-178, "
Checking the A/T Fluid (ATF)",
TM-194, "
Checking of A/T Position" and TM-194, "Adjustment of A/
T Position".
Removal and Installation (4WD)INFOID:0000000004917499
COMPONENTS
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
LCIA0371E
LCIA0335E
Revision: March 2010 2008 QX56

TM-218
< REMOVAL AND INSTALLATION >
TRANSMISSION ASSEMBLY
8. Remove crankshaft position sensor (POS) from A/T assembly.CAUTION:
• Do not subject it to impact by dropping or hitting it.
• Do not disassemble.
• Do not allow metal filings or fo reign material to get on the
sensor's front edge magnetic area.
• Do not place in an area affected by magnetism.
9. Disconnect A/T fluid cooler tube from A/T assembly.
10. Remove dust cover from converter housing.
11. Turn crankshaft, and remove the four bolts for drive plate and torque converter.
CAUTION:
When turning crankshaft, turn it clockwise as viewed from
the front of the engine.
12. Support A/T assembly using transmission jack and Tool. CAUTION:
When setting the transmission j ack, be careful not to allow
it to collide agai nst the drain plug.
NOTE:
The actual special service tool may differ from tool shown.
13. Remove cross member using power tool.
14. Remove air breather hose. Refer to TM-197, "
Removal and
Installation".
15. Disconnect A/T assembly connector and transfer unit connector.
16. Remove A/T fluid indicator pipe.
17. Plug any openings such as the fluid charging pipe hole.
18. Remove A/T assembly to engine bolts using power tool.
19. Remove A/T assembly with transfer from vehicle. CAUTION:
• Secure torque converter to prevent it from dropping.
• Secure A/T assembly to transmission jack.
20. Remove transfer from A/T assembly. Refer to DLN-139, "
Removal and Installation".
INSPECTION
Installation and Inspection of Torque Converter
LCIA0334E
LCIA0335E
Tool number : — (J-47002)
SCIA2203E
Revision: March 2010 2008 QX56

TRANSMISSION ASSEMBLYTM-219
< REMOVAL AND INSTALLATION >
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• After inserting a torque converter to a transmission, be sure to check dimension A to ensure it is within specifications.
INSTALLATION
Installation of the remaining components is in the revers e order of removal, while paying attention to the fol-
lowing:
• When installing transmission to the engine, attach the bolts as shown.
CAUTION:
• When replacing an engine or transmission you must make sure the dowels are installed correctly during re-assembly.
• Improper alignment caused by missing dowels may cause
vibration, oil leaks or breakage of drivetrain components.
NOTE:
*: No.2 bolt also secures air breather vent.
• Align the positions of bolts for dr ive plate with those of the torque
converter, and temporarily tighten the bolts. Then tighten the bolts
with the specified torque.
CAUTION:
• When turning crankshaft, turn it clockwise as viewed from the
front of the engine.
• After converter is installed to drive plate, rotate crankshaft several turns and check to be sure that transmission rotates
freely without binding.
• Install crankshaft position sensor (POS).
• After completing installation, check fluid leakage, fluid level, and the positions of A/T. Refer to TM-178, "
Checking the A/T Fluid
(ATF)", TM-194, "Checking of A/T Position" and TM-194, "Adjustment of A/T Position".
Dimension A : 24.0 mm (0.94 in) or more
SAT017B
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
LCIA0371E
LCIA0335E
Revision: March 2010 2008 QX56

TM-232
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
DISASSEMBLY
DisassemblyINFOID:0000000004917895
CAUTION:
Do not disassemble parts behind Drum Support. Refer to TM-8, "
Cross-Sectional View (2WD models)".
1. Drain A/T fluid through drain plug.
2. Remove torque converter by holding it firmly and turing while pulling straight out.
3. Check torque converter one-way clutch using a check tool as shown.
a. Insert a check tool into the groove of bearing support built into one-way clutch outer race.
b. While holding bearing support with a check tool, rotate one-way clutch spline using suitable tool.
c. Make sure that inner race rotates clockwise only. If not, replace torque converter assembly.
4. Remove bolts and converter housing from transmission case. CAUTION:
Do not scratch converter housing.
• Self-sealing bolt (A)
SCIA5010E
SCIA3171E
WCIA0624E
Revision: March 2010 2008 QX56

DISASSEMBLYTM-235
< DISASSEMBLY AND ASSEMBLY >
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14. Loosen lock nut and remove band servo anchor end pin from transmission case.
15. Remove brake band from transmission case.
CAUTION:
• To prevent brake linings from cracking or peeling, do not
stretch the flexible band unnecessarily. When removing
the brake band, always secure it with a clip as shown.
• Check brake band facing for damage, cracks, wear or
burns.
16. Remove mid carrier assembly and rear carrier assembly as a unit.
SCIA6512E
SCIA2580E
SAT655
SCIA5017E
Revision: March 2010 2008 QX56

TM-254
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
2. Install snap ring in front sun gear using suitable tool.
3. Check operation of 3rd one-way clutch.
a. Hold oil pump assembly and turn front sun gear.
b. Check 3rd one-way clutch for correct locking and unlockingdirections.
CAUTION:
If not as shown, check installa tion direction of 3rd one-way
clutch.
Front Carrier, Input Clutc h, Rear Internal GearINFOID:0000000004917898
COMPONENTS
SCIA3110E
SCIA3131E
Revision: March 2010 2008 QX56

TM-264
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
6. Install high and low reverse clutch hub to mid sun gear assem-bly.
7. Install snap ring to mid sun gear assembly using suitable tool. CAUTION:
Do not expand snap ring excessively.
8. Check operation of 1st one-way clutch.
a. Hold mid sun gear and turn rear sun gear.
b. Check 1st one-way clutch for correct locking and unlocking directions.
CAUTION:
If not as shown, check installa tion direction of 1st one-way
clutch.
9. Install needle bearing and bearing races to high and low reverse clutch hub.
CAUTION:
• Apply petroleum jelly to n eedle bearing and bearing
races.
• Take care with order of bearing races.
High and Low Reverse ClutchINFOID:0000000004917900
COMPONENTS
SCIA2856E
SCIA2855E
SCIA3132E
SCIA5238E
Revision: March 2010 2008 QX56