Revers INFINITI QX56 2004 Factory Repair Manual

AT-234
SHIFT CONTROL SYSTEM
Revision: August 20072004 QX56
REMOVAL
1. Remove the select lever knob.
2. Remove console finisher.

Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
3. Remove center console.

Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
4. Disconnect selector control cable.
5. Disconnect A/T device harness connector.
6. Remove control device assembly.
INSTALLATION
Installation is in reverse order of removal.
NOTE:


: Vehicle front
Apply adhesive, Cemedyne 3000 or equivalent, to thread of select
lever knob before installation. Rotate knob clockwise through com-
plete thread range (A) at low torque. When knob rotation is finished
through complete thread range, rotation torque will sunddenly
increase. Continue knob rotation in incomplete thread range (B), not
more than 360°, until knob rotational position is as shown.

After installation is completed, adjust and check A/T position.
Adjustment of A/T PositionECS0090O
1. Loosen nut of control cable.
2. Place PNP switch and selector lever in “P” position.
3. After pushing the control cable in the direction shown with a
force of 9.8 N·m (1kg-m, 2.2 lb-ft), release it. This is in the natu-
ral state, tighten control cable nut to specifications.
Checking of A/T PositionECS0090P
1. Place selector lever in “P” position, and turn ignition switch ON
(engine stop).
2. Make sure selector lever can be shifted to other than “P” posi-
tion when brake pedal is depressed. Also make sure selector
lever can be shifted from “P” position only when brake pedal is
depressed.
3. Move the selector lever and check for excessive effort, sticking,
noise or rattle.
4. Confirm the selector lever stops at each position with the feel of
engagement when it is moved through all the positions. Check
whether or not the actual position the selector lever is in
matches the position shown by the shift position indicator and
the transmission body.
5. The method of operating the lever to individual positions correctly should be as shown.
6. Confirm the back-up lamps illuminate only when lever is placed in the “R” position. Confirm the back-up
lamps does not illuminate when selector lever is pushed against “R” position in the “P” or “N” position.
LCIA0323E
LCIA0397E
Control cable nut : 14.5 N·m (1.5 kg-m, 11 ft-lb)
LCIA0345E
LCIA0325E

TRANSMISSION ASSEMBLY
AT-257
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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" .
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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-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

OVERHAUL
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1. Bearing race 2. High and low reverse clutch assem-
bly3. Needle bearing
4. Direct clutch assembly 5. Needle bearing 6. Reverse brake dish plate
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AT-264
OVERHAUL
Revision: August 20072004 QX56
7. Reverse brake driven plate 8. N-sprig 9. Snap ring
10. Reverse brake retaining plate 11. Reverse brake drive plate 12. Snap ring
13. Spring retainer 14. Return spring 15. Reverse brake piston
16. D-ring 17. D-ring

AT-278
DISASSEMBLY
Revision: August 20072004 QX56
22. Remove mid sun gear assembly, rear sun gear assembly and
high and low reverse clutch hub as a unit.
CAUTION:
Be careful to remove then with bearing races and needle
bearing.
23. Remove high and low reverse clutch assembly from direct clutch
assembly.
CAUTION:
Make sure that needle bearing is installed to the high and
low reverse clutch assembly edge surface.
24. Remove direct clutch assembly from reverse brake.
25. Remove needle bearing from drum support edge surface.
26. Remove snap ring from A/T assembly harness connector.
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AT-284
DISASSEMBLY
Revision: August 20072004 QX56
43. Remove parking gear from output shaft.
44. Remove seal rings from output shaft.
45. Remove needle bearing from transmission case.
46. Remove revolution sensor from transmission case.
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.
47. Remove reverse brake snap ring (fixing plate) using 2 flat-
bladed screwdrivers.
NOTE:
Press out snap ring from the transmission case oil pan side gap
using a flat-bladed screwdriver, and remove it using another
screwdriver.
48. Remove reverse brake retaining plate from transmission case.
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SCIA5032E

DISASSEMBLY
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49. Remove N-spring from transmission case.
50. Remove reverse brake drive plates, driven plates and dish plate
from transmission case.
51. Set SST on spring retainer and remove snap ring (fixing spring
retainer) from transmission case while compressing return
spring.
52. Remove spring retainer and return spring from transmission
case.
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AT-286
DISASSEMBLY
Revision: August 20072004 QX56
53. Remove seal rings from drum support.
54. Remove needle bearing from drum support edge surface.
55. Remove reverse brake piston from transmission case with com-
pressed air. Refer to AT-269, "
Oil Channel" .
CAUTION:
Care should be taken not to abruptly blow air. It makes pis-
tons incline, as the result, it becomes hard to disassemble
the pistons.
56. Remove D-rings from reverse brake piston.
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