brake INFINITI QX56 2006 Factory Service Manual

A/T SHIFT LOCK SYSTEMAT-225
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
Key unlock

Check operation by applying battery voltage to key switch and
key lock solenoid terminal 2 and ground to terminal 1.
CAUTION:
Be careful not to cause burnout of the harness.
KEY SWITCH

Check continuity between terminals of the key switch and key
lock solenoid.
STOP LAMP SWITCH

Check continuity between terminals of the stop lamp switch har-
ness connector.
Check stop lamp switch after adjusting brake pedal.
WCIA0241E
Condition Terminal No. Continuity
Key inserted 3 - 4Ye s
Key withdrawn No
SCIA5662E
ConditionTerminal No. Continuity
When brake pedal is depressed 3 - 4Ye s
When brake pedal is released No
WCIA0559E

SHIFT CONTROL SYSTEMAT-227
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
REMOVAL
1. Remove negative battery terminal. Refer to SC-4, "BATTERY" .
2. Remove A/T finisher. Refer to IP-13, "
A/T FINISHER" .
3. Disconnect selector control cable.
4. Disconnect A/T device harness connector.
5. Remove control device assembly.
INSTALLATION
Installation is in reverse order of removal. Be careful of the following:

After installation is completed, adjust and check A/T position.
Adjustment of A/T PositionECS00EO0
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 PositionECS00EO1
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.
7. Confirm the engine can only be started with the selector lever in the “P” and “N” positions.
8. Make sure transmission is locked completely in “P” position.
Control cable nut : 14.5 N·m (1.5 kg-m, 11 ft-lb)
LCIA0345E
LCIA0325E

OVERHAULAT-251
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
1. O-ring2. Oil pump cover3. O-ring
4. Oil pump housing 5. Self-sealing bolt6. Torque converter
7. Converter housing 8. Oil pump housing oil seal9. Bearing race
10. Needle bearing 11. O-ring12. Front carrier assembly
13. Needle bearing 14. Snap ring15. Front sun gear
16. 3rd one-way clutch 17. Snap ring18. Bearing race
19. Needle bearing 20. Seal ring21. Input clutch assembly
22. Needle bearing 23. Rear internal gear24. 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 gear33. 1st one-way clutch
34. Snap ring 35. Needle bearing36. High and low reverse clutch hub
37. Snap ring 38. Bearing race39. Needle bearing

AT-252
OVERHAUL
Revision: November 20092006 QX56
1. Bearing race2. High and low reverse clutch assem-
bly 3. Needle bearing
4. Direct clutch assembly 5. Needle bearing 6. Reverse brake dish plate
SCIA5181E

OVERHAULAT-253
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
7. Reverse brake driven plate 8. N-spring9. Snap ring
10. Reverse brake retaining plate 11. Reverse brake drive plate 12. Snap ring
13. Spring retainer 14. Return spring15. Reverse brake piston
16. D-ring 17. D-ring

DISASSEMBLYAT-267
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
14. Loosen lock nut and remove band servo anchor end pin from
transmission case.
15. Remove brake band from transmission case.

To prevent brake linings from cracking or peeling, do not
stretch the flexible band unnecessarily. When removing
the brake band, always secure it with a clip as shown.
Leave the clip in position after removing the brake band.

Check brake band facing for damage, cracks, wear or
burns.
16. Remove mid carrier assembly and rear carrier assembly as a unit.
SCIA5016E
SCIA5345E
SAT655
SCIA5344E

DISASSEMBLYAT-269
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 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 them 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.
SCIA5018E
SCIA2306E
SCIA5019E
SCIA5198E
SCIA5021E

DISASSEMBLYAT-275
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
44. Remove parking gear from output shaft.
45. Remove seal rings from output shaft.
46. Remove needle bearing from transmission case.
47. 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 or foreign material to get on the
sensor front edge magnetic area.

Do not place in an area affected by magnetism.
48. Remove reverse brake snap ring using 2 flat-bladed screwdriv- ers.
NOTE:
Press out snap ring from the transmission case oil pan side gap
using a flat-bladed screwdriver, and remove it using another
screwdriver.
49. Remove reverse brake retaining plate from transmission case.
SCIA5247E
SCIA5209E
SCIA5213E
SCIA2320E
SCIA5032E

AT-276
DISASSEMBLY
Revision: November 20092006 QX56
50. Remove N-spring from transmission case.
51. Remove reverse brake drive plates, driven plates and dish plate
from transmission case.
52. Remove snap ring from transmission case while compressing return spring, using Tool.
53. Remove spring retainer and return spring from transmission case.
SCIA5214E
SCIA2322E
Tool number : KV31102400 (J-34285 and J- 34285-87)
SCIA5582E
SCIA2324E

DISASSEMBLYAT-277
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
54. Remove seal rings from drum support.
55. Remove needle bearing from drum support edge surface.
56. Remove reverse brake piston from transmission case with com-
pressed air. Refer to AT- 2 5 8 , "
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.
57. Remove D-rings from reverse brake piston.
SCIA3333E
SCIA2796E
SCIA5047E
SCIA5340E