INFINITI QX56 2010 Factory Service Manual

TM-186
< REMOVAL AND INSTALLATION >
TRANSMISSION ASSEMBLY
REMOVAL AND INSTALLATION
TRANSMISSION ASSEMBLY
Removal and Installation (2WD)INFOID:0000000005148743
COMPONENTS
REMOVAL
CAUTION:
When removing the A/T assembly from engine, first remove the crankshaft position sensor (POS) from
the A/T assembly.
Be careful not to damage sensor edge.
1. Disconnect the negative battery terminal.
2. Remove A/T fluid level gauge.
3. Partially drain A/T fluid. Refer to TM-150, "
Changing the A/T Fluid (ATF)".
4. Remove engine under covers using power tool.
5. Remove exhaust front tube and center muffler using power tool. Refer to EX-6, "
Exploded View".
6. Remove rear propeller shaft. Refer to DLN-196, "
Removal and Installation".
7. Disconnect A/T shift selector cable.
1. A/T fluid charging pipe 2. A/T fluid level gauge 3. O-ring
4. Transmission assembly 5. Fluid cooler tube6. A/T cross member
7. Insulator 8. Copper washers
AWDIA0553GB
Revision: April 20092010 QX56

TRANSMISSION ASSEMBLYTM-187
< 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-166, "
Removal and
Installation".
15. Disconnect A/T assembly connector.
16. Remove A/T fluid charging pipe from A/T assembly.
17. Plug any openings such as the A/T fluid charging 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 distance 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
Distance A : 24.0 mm (0.94 in) or more
SAT017B
Revision: April 20092010 QX56

TM-188
< 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.
• 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. Refer to TM-186, "
Removal and Installa-
tion (2WD)".
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 pos ition sensor (POS).
• After completing installation check fluid leakage, fluid level and the
positions of A/T. Refer to TM-148, "
Checking the A/T Fluid (ATF)", TM-164, "Checking of A/T Position" and
TM-164, "
Adjustment of A/T Position".
Removal and Installation (4WD)INFOID:0000000005148744
COMPONENTS
Transmission to engine
bolts : 113 N·m (12 kg-m, 83 ft-lb)
LCIA0371E
LCIA0335E
Revision: April 20092010 QX56

TRANSMISSION ASSEMBLYTM-189
< REMOVAL AND INSTALLATION >
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REMOVAL
CAUTION:
When removing the A/T assembly from engine, firs t remove the crankshaft position sensor (POS) from
the A/T assembly.
Be careful not to damage sensor edge.
1. Disconnect the negative battery terminal.
2. Remove A/T fluid level gauge.
3. Partially drain A/T fluid. Refer to TM-150, "
Changing the A/T Fluid (ATF)".
4. Remove engine under cover and transfer under cover using power tool.
5. Remove exhaust front tube and center muffler using power tool. Refer to EX-6, "
Exploded View".
6. Remove propeller shafts. Refer to DLN-186, "
Removal and Installation" (front) and DLN-196, "Removal
and Installation" (rear).
7. Disconnect A/T shift selector cable.
1. A/T fluid charging pipe 2. A/T fluid level gauge3. O-ring
4. Transmission assembly 5. Fluid cooler tube6. Copper washer
7. A/T cross member 8. Insulator
AWDIA0548GB
Revision: April 20092010 QX56

TM-190
< 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 front edge magnetic area.
• Do not place in an area affected by magnetism.
9. Remove 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 jack, be careful not to allow it to collide against the drain plug.
NOTE:
The actual special service tool may differ from tool shown.
13. Remove cross member using power tool.
14. Tilt the transmission slightly to keep the cl earance between body and transmission, then disconnect air
breather hose from A/T fluid charging pipe.
15. Remove air breather hose. Refer to TM-166, "
Removal and Installation".
16. Disconnect A/T assembly connector and transfer unit connector.
17. Remove A/T fluid charging pipe.
18. Plug any openings such as the fluid charging pipe hole.
19. Remove A/T assembly to engine bolts using power tool.
20. Remove A/T assembly with transfer from vehicle. CAUTION:
• Secure torque converter to prevent it from dropping.
• Secure A/T assembly to transmission jack.
21. Remove transfer from A/T assembly. Refer to TM-188,
"Removal and Installation (4WD)".
INSPECTION
Installation and Inspection of Torque Converter
LCIA0334E
LCIA0335E
Tool number : — (J-47002)
SCIA2203E
Revision: April 20092010 QX56

TRANSMISSION ASSEMBLYTM-191
< REMOVAL AND INSTALLATION >
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• After inserting a torque converter to a transmission, be sure to check distance 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. Refer to TM-188, "
Removal and Installa-
tion (4WD)".
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-148, "
Checking the A/T Fluid (ATF)", TM-164, "Checking of A/T Position"
and TM-164, "Adjustment of A/T Position".
Distance 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: April 20092010 QX56

TM-192
< DISASSEMBLY AND ASSEMBLY >
OVERHAUL
DISASSEMBLY AND ASSEMBLY
OVERHAUL
ComponentINFOID:0000000005148745
WCIA0661E
Revision: April 20092010 QX56

OVERHAULTM-193
< DISASSEMBLY AND ASSEMBLY >
CEF
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1. O-ring 2. Oil pump cover 3. O-ring
4. Oil pump housing 5. Self-sealing bolts 6. Torque converter
7. Converter housing 8. Oil pump housing oil seal 9. Bearing race
10. Needle bearing 11. O-ring 12. Front carrier assembly
13. Needle bearing 14. Snap ring 15. Front sun gear
16. 3rd one-way clutch 17. Snap ring 18. Bearing race
19. Needle bearing 20. Seal ring 21. Input clutch assembly
22. Needle bearing 23. Rear internal gear 24. Brake band
25. Mid carrier assembly 26. Needle bearing 27. Bearing race
28. Rear carrier assembly 29. Needle bearing 30. Mid sun gear
31. Seal ring 32. Rear sun gear 33. 1st one-way clutch
34. Snap ring 35. Needle bearing 36. High and low reverse clutch hub
37. Snap ring 38. Bearing race 39. Needle bearing
Revision: April 20092010 QX56

TM-194
< DISASSEMBLY AND ASSEMBLY >
OVERHAUL
1. Needle bearing2. Bearing race3. High and low reverse clutch assembly
4. Needle bearing 5. Direct clutch assembly6. Reverse brake dish plate
7. Reverse brake dish plate 8. Reverse brake driven plate 9. N-spring
10. Reverse brake drive plate 11. Reverse brake retaining plate 12. Snap ring
13. D-ring 14. D-ring15. Reverse brake piston
16. Return spring 17. Spring retainer18. Snap ring
SCIA7001E
Revision: April 20092010 QX56

OVERHAULTM-195
< DISASSEMBLY AND ASSEMBLY >
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2WD
1. Rear oil seal 2. Bracket3. Bracket
4. Adapter case 5. Parking actuator support 6. Parking pawl
7. Return spring 8. Pawl shaft9. Self-sealing bolt
10. Seal ring 11. Needle bearing12. Gasket
13. Output speed sensor 14. Parking gear15. Output shaft
JSDIA1365GB
Revision: April 20092010 QX56