torque INFINITI QX56 2004 Factory Workshop Manual

AT-262
OVERHAUL
Revision: August 20072004 QX56
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
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

DISASSEMBLY
AT-273
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
DISASSEMBLYPFP:31020
DisassemblyUCS002JJ
CAUTION:
Do not disassemble parts behind Drum Support. Refer to AT-18, "
Cross-Sectional View (2WD models)"
or AT- 1 9 , "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 at figure.
a. Insert check tool into the groove of bearing support built into
one-way clutch outer race.
b. When fixing bearing support with check tool, rotate one- way
clutch spline using screwdriver.
c. Check that inner race rotates clockwise only. If not, replace
torque converter assembly.
4. Remove converter housing from transmission case.
CAUTION:
Be careful not to scratch converter housing.
SCIA5010E
SCIA3171E
SCIA5171E

AT-292
REPAIR FOR COMPONENT PARTS
Revision: August 20072004 QX56
3. Using a drift, install oil pump housing oil seal to the oil pump
housing until it is flush.
CAUTION:

Do not reuse oil seal.

Apply ATF to oil seal.
4. Install oil pump housing in oil pump cover. Tighten oil pump
housing fitting bolt to the specified torque. Refer to AT-290,
"COMPONENTS" .
Front Sun Gear, 3rd One-Way ClutchUCS002J L
COMPONENTS
SCIA2839E
SCIA5228E
1. Front sun gear 2. 3rd one-way clutch 3. Snap ring
SCIA3 114 E

ASSEMBLY
AT-309
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
ASSEMBLYPFP:00000
Assembly (1)UCS002JQ
1. As shown in the right figure illustration, use a drift [commercial
service tool φ22 mm (0.87 in)] to drive manual shaft oil seals into
the transmission case until it is flush.
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
mounting bolt to the specified torque. Refer to AT-261, "
Compo-
nents" .
3. Install manual shaft to transmission case.
4. Install parking rod to manual plate.
5. Install manual plate (with parking rod) to manual shaft.
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SCIA5248E
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SCIA5219E

AT-314
ASSEMBLY
Revision: August 20072004 QX56
24. Install revolution sensor to transmission case. Tighten revolution
sensor mounting bolt to the specified torque. Refer to AT-261,
"Components" .
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, etc., to get on the sensor's
front edge magnetic area.

Do not place in an area affected by magnetism.
25. As shown in the right figure illustration, use a drift to drive rear
oil seal into the rear extension (2WD models) or adapter case
(4WD models) until it is flush.
CAUTION:

Apply ATF to rear oil seal.

Do not reuse rear oil seal.
26. Install return spring to parking pawl.
27. Install parking pawl (with return spring) and pawl shaft to rear
extension (2WD models) or adapter case (4WD models).
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SCIA5270E
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AT-316
ASSEMBLY
Revision: August 20072004 QX56
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. Refer to GI-45, "
Recommended Chemical Prod-
ucts and Sealants" .) to rear extension assembly as shown in
illustration.
CAUTION:
Complete remove all moisture, oil and old sealant, etc.
From the transmission case and rear extension assembly
mounting surfaces.
ii. Install rear extension assembly to transmission case.
iii. Install bracket.
iv. Tighten rear extension assembly mounting bolts to specified
torque.
CAUTION:
Do not reuse self-sealing bolt.
SCIA5245E
SCIA5212E
SCIA5029E
Rear extension assembly mounting bolt:
: 52 N·m (5.3 kg-m, 38 ft-lb)
Self-sealing bolt:
: 61 N·m (6.2 kg-m, 45 ft-lb)
SCIA5349E

ASSEMBLY
AT-317
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
b.4WD models
i. Install gasket to transmission case.
CAUTION:

Do not reuse gasket.

Complete remove all moisture, oil and old gasket, etc.
From the transmission case and adapter case assembly
mounting surfaces.
ii. Install adapter case assembly to transmission case.
iii. Install bracket.
iv. Tighten adapter case assembly mounting bolts to specified
torque.
CAUTION:
Do not reuse self-sealing bolt.
35. Install needle bearing in drum support edge surface.
CAUTION:
Apply petroleum jelly to needle bearing.
SCIA5231E
SCIA5205E
Adapter case assembly mounting bolt:
: 52 N·m (5.3 kg-m, 38 ft-lb)
Self-sealing bolt:
: 61 N·m (6.2 kg-m, 45 ft-lb)
SCIA5203E
SCIA5198E

AT-322
ASSEMBLY
Revision: August 20072004 QX56
53. Adjust brake band.
a. Loosen lock nut.
b. Tighten band servo anchor end pin to specified torque.
c. Back of band servo anchor end pin three turns.
d. Holding band servo anchor end pin, tighten lock nut to specified
torque. Refer to AT-261, "
Components" .
AdjustmentUCS002JR
TOTAL END PLAY

Measure clearance between front sun gear and bearing race for
oil pump cover.

Select proper thickness of bearing race so that end play is within
specifications.
1. Measure dimensions “K” and “L” and then calculate dimension
“J”.
a. Measure dimension “K”.: 5.0 N·m (0.51 kg-m, 44 in-lb)
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SCIA2810E
SCIA5350E
SCIA5351E

ASSEMBLY
AT-325
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
3. Install oil pump assembly in transmission case.
CAUTION:
Apply ATF to oil pump radial bearing.
4. Apply recommended sealant (Genuine RTV Silicone Sealant or
equivalent. Refer to GI-45, "
Recommended Chemical Products
and Sealants" .) to oil pump assembly as shown in illustration.
CAUTION:
Complete remove all moisture, oil and old sealant, etc.
From the oil pump mounting bolts and oil pump mounting
bolt mounting surfaces.
5. Tighten oil pump mounting bolts to specified torque. Refer to AT-
261, "Components" .
CAUTION:
Apply ATF to oil pump bushing.
6. Install O-ring to input clutch assembly.
CAUTION:

Do not reuse O-ring.

Apply ATF to O-ring.
7. Install converter housing to transmission case.
CAUTION:
Do not reuse self-sealing bolt.
SCIA2 811 E
SCIA5321E
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SCIA5 011 E
Converter housing mounting bolt:
: 52 N·m (5.3 kg-m, 38 ft-lb)
Self-sealing bolt:
: 61 N·m (6.2 kg-m, 45 ft-lb)
SCIA5171E

AT-326
ASSEMBLY
Revision: August 20072004 QX56
8. Make sure that brake band does not close turbine revolution
sensor hole.
9. Install control valve with TCM.
a. Install A/T fluid temperature sensor 2 to bracket.
b. Install A/T fluid temperature sensor 2 (with bracket) in control
valve with TCM. Tighten A/T fluid temperature sensor 2 mount-
ing bolt to the specified torque. Refer to AT-261, "
Components"
.
CAUTION:
Adjust bolt hole of bracket to bolt hole of control valve with
TCM.
c. Install O-ring to A/T assembly harness connector.
CAUTION:

Do not reuse O-ring.

Apply ATF to O-ring.
d. Install control valve with TCM in transmission case.
CAUTION:

Make sure that turbine revolution sensor securely installs
turbine revolution sensor hole.

Adjust A/T assembly harness connector of control valve
with TCM to terminal hole of transmission case.

Hang down revolution sensor harness toward outside so
as not to disturb installation of control valve with TCM.
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SCIA5155E
SCIA5034E