torque INFINITI QX56 2007 Factory Workshop Manual

TRANSMISSION ASSEMBLY
AT-225
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• When installing transmission to the engine, attach the bolts as shown.
NOTE:
*: No.2 bolt also secures air breather vent.
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.
• 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.
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 AT-13, "
Checking Automatic Transmis-
sion Fluid (ATF)", AT-208, "Checking of A/T Position" and AT-208, "Adjustment of A/T Position".
Removal and Installation (4WD)INFOID:0000000003532482
COMPONENTS
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
LCIA0371E
LCIA0335E
AWDIA0441GB

AT-226
< SERVICE INFORMATION >
TRANSMISSION ASSEMBLY
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 engine cover using power tool.
3. Remove A/T fluid indicator.
4. Remove undercovers using power tool.
5. Remove exhaust front tube and center muffler using power tool. Refer to EX-3, "
Removal and Installa-
tion".
6. Remove propeller shafts. Refer to PR-4, "
Removal and Installation" and PR-8, "Removal and Installation".
7. Remove A/T control cable. Refer to AT-207, "
Control Device Removal and Installation".
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 foreign 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 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 clearance between body
and transmission, then disconnect air breather hose from A/T
fluid indicator pipe. Refer to AT-221, "
Removal and Installation".
15. Disconnect A/T assembly connector and transfer unit connector.
16. Remove A/T fluid indicator pipe.
1. A/T fluid indicator pipe 2. A/T fluid indicator 3. O-ring
4. Transmission assembly 5. Fluid cooler tube 6. Copper washer
7. A/T cross member 8. Insulator
LCIA0334E
LCIA0335E
Tool number : — (J-47002)
SCIA2203E

TRANSMISSION ASSEMBLY
AT-227
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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 TF-128, "
Removal and Installation".
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 reverse order of removal, while paying attention to the fol-
lowing:
• When installing transmission to the engine, attach the bolts as shown.
NOTE:
*: No.2 bolt also secures air breather vent.
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.
• 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.
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 AT-13, "
Checking Automatic Trans-
mission Fluid (ATF)", AT-208, "Checking of A/T Position" and AT-208, "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

AT-228
< SERVICE INFORMATION >
OVERHAUL
OVERHAUL
ComponentINFOID:0000000003532483
1. O-ring 2. Oil pump cover 3. O-ring
4. Oil pump housing 5. Self-sealing bolt 6. Torque converter
7. Converter housing 8. Oil pump housing oil seal 9. Bearing race
WCIA0622E

AT-240
< SERVICE INFORMATION >
DISASSEMBLY
DISASSEMBLY
DisassemblyINFOID:0000000003532486
CAUTION:
Do not disassemble parts behind drum support. Refer to AT-19, "
Cross-Sectional View (2WD models)"
or AT-20, "Cross-Sectional View (4WD models)".
1. Drain ATF 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 check tool as
shown.
a. Insert check tool into the groove of bearing support built into
one-way clutch outer race.
b. While holding bearing support with check tool, rotate one- way
clutch spline using suitable tool.
c. Check that inner race rotates clockwise only. If not, replace
torque converter assembly.
4. Remove converter housing from transmission case.
• A: Self-sealing bolts
CAUTION:
Be careful not to scratch converter housing.
SCIA5010E
SCIA3171E
WCIA0624E

AT-260
< SERVICE INFORMATION >
REPAIR FOR COMPONENT PARTS
3. Install new oil pump housing oil seal to the oil pump housing
until it is flush with the face of oil pump housing using Tool.
CAUTION:
• Do not reuse oil seal.
• Apply ATF to oil seal.
4. Install oil pump housing in oil pump cover. Tighten oil pump
housing bolts to the specified torque. Refer to AT-228, "
Compo-
nent".
Front Sun Gear, 3rd One-Way ClutchINFOID:0000000003532488
COMPONENTS
DISASSEMBLY
Tool number : ST33400001 (J-26082)
SCIA5313E
SCIA5228E
1. Front sun gear 2. 3rd one-way clutch 3. Snap ring
SCIA3114E

ASSEMBLY
AT-277
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ASSEMBLY
Assembly (1)INFOID:0000000003532493
1. Drive new manual shaft oil seals into the transmission case until
it is flush using suitable tool.
CAUTION:
• Apply ATF to manual shaft oil seals.
• Do not reuse manual shaft oil seals.
2. Install detent spring and spacer in transmission case. Tighten
bolt to the specified torque. Refer to AT-228, "
Component".
3. Install manual shaft to transmission case.
4. Install parking rod to manual plate.
SCIA5256E
SCIA5248E
SCIA5716E
SCIA5220E

AT-282
< SERVICE INFORMATION >
ASSEMBLY
24. Install revolution sensor to transmission case. Tighten revolution
sensor bolt to the specified torque. Refer to AT-228, "
Compo-
nent".
CAUTION:
• Do not subject it to impact by dropping or hitting it.
• Be careful not to damage harness with the edge of case.
• 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.
25. Install new rear oil seal until it is flush into the rear extension
(2WD models) using Tool or adapter case (4WD models) using
suitable tool.
CAUTION:
• Apply ATF to rear oil seal.
• Do not reuse rear oil seal.
26. Install return spring (1) to parking pawl (2).
27. Install parking pawl (with return spring) and pawl shaft to rear
extension (2WD models) or adapter case (4WD models).
SCIA2320E
Tool number : ST33400001 (J-26082)
SCIA5581E
SCIA6180E
SCIA3424E

AT-284
< SERVICE INFORMATION >
ASSEMBLY
33. Install bearing race in output shaft.
34. Install rear extension assembly (2WD models) or adapter case assembly (4WD models) according to the
following procedures.
a.2WD models
i. Apply recommended sealant (Genuine Anaerobic Liquid Gasket
or equivalent) to rear extension assembly as shown. Refer to GI-
45, "Recommended Chemical Product and Sealant".
CAUTION:
Completely remove all moisture, oil and old sealant from
the transmission case and rear extension assembly mating
surfaces.
ii. Install rear extension assembly to transmission case.
iii. Install brackets (1).
iv. Tighten rear extension assembly bolts to specified torque.
CAUTION:
Do not reuse self-sealing bolts (2).
SCIA5245E
SCIA5212E
SCIA5029E
Rear extension assembly bolts : 52 N·m (5.3 kg-m,
38 ft-lb)
Self-sealing bolts : 61 N·m (6.2 kg-m,
45 ft-lb)
WCIA0562E

ASSEMBLY
AT-285
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b.4WD models
i. Install new gasket to transmission case.
CAUTION:
• Do not reuse gasket.
• Completely remove all moisture, oil and old gasket from
the transmission case and adapter case assembly mating
surfaces.
ii. Install adapter case assembly to transmission case.
iii. Install brackets (1).
iv. Tighten adapter case assembly bolts to specified torque.
CAUTION:
Do not reuse self-sealing bolts (2).
35. Install needle bearing in drum support edge surface.
CAUTION:
Apply petroleum jelly to needle bearing.
SCIA5231E
SCIA5205E
Adapter case assembly bolts : 52 N·m (5.3 kg-m, 38
ft-lb)
Self-sealing bolt : 61 N·m (6.2 kg-m, 45
ft-lb)
WCIA0563E
SCIA5198E