2004 INFINITI QX56 torque

TRANSMISSION ASSEMBLY
AT-259
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
8. Remove crankshaft position sensor (POS) from A/T assembly.
9. Disconnect A/T fluid cooler tube from A/T assembly.
10. Remove dust cover from converter housing part.
11. Turn crankshaft, and remove the four tightening 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 against the drain plug.
13. Remove cross member with power tool.
14. Tilt the transmission slightly to keep the clearance between body
and transmission, and then disconnect air breather hose from charging pipe. Refer to AT- 2 5 3 , "
Removal
and Installation" .
15. Disconnect A/T assembly connector and transfer unit connector.
16. Remove A/T fluid indicator pipe.
17. Plug up openings such as the fluid charging pipe hole, etc.
18. Remove A/T assembly to engine bolts with power tool.
19. Remove A/T assembly from vehicle using Tool and a transmis-
sion jack.

Secure torque converter to prevent it from dropping.

Secure A/T assembly to a transmission jack.
NOTE:
The actual special service Tool may differ from Tool shown.
20. Remove transfer from A/T assembly. Refer to TF-109,
"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 the reference value
limit.
LCIA0334E
Tool number : — (J-47002)
LCIA0335E
SCIA0499E
Dimension A : 24.0 mm (0.94 in) or more
SAT0 1 7B

AT-260
TRANSMISSION ASSEMBLY
Revision: August 20072004 QX56
INSTALLATION
Installation of the remaining components is in the reverse order of
the removal, while paying attention to the following work.

If removed, install drive plate.
–Align dowel pin of crankshaft rear end with pin holes of each
parts to install.
–Install drive plate, reinforcement plate and pilot converter as
shown.
–Face chamfered or rounded edge side to crankshaft.
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.

When installing transmission to the engine, attach the bolts in
accordance with the following standard.
*: No.2 bolt also secures air breather vent.
–Align the positions of tightening 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.

After completing installation, check fluid leakage, fluid level, and the positions of A/T. Refer to AT-13,
"Checking A/T Fluid" , AT-234, "Checking of A/T Position" , AT-234, "Adjustment of A/T Position" .
KBIA2494E
KBIA2537E
Bolt No. 1 2* 3
Number of bolts 4 1 4
Bolt length
“”mm (in)70 (2.76) 70 (2.76) 70 (2.76)
Tightening torque
N·m (kg-m, ft-lb)11 3
(12, 83)11 3
(12, 83)
LCIA0371E
LCIA0335E

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.
SCIA5256E
SCIA5248E
SCIA5220E
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).
SCIA2320E
SCIA5270E
SCIA2445E
SCIA3424E

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