INFINITI QX56 2007 Factory Service Manual

DISASSEMBLY
AT-251
< SERVICE INFORMATION >
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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.
50. Remove N-spring from transmission case.
51. Remove reverse brake drive plates, driven plates and dish plate
from transmission case.
SCIA5213E
SCIA2320E
SCIA5032E
SCIA5214E
SCIA2322E

AT-252
< SERVICE INFORMATION >
DISASSEMBLY
52. Remove snap ring from transmission case while compressing
return spring, using Tool.
53. Remove spring retainer and return spring from transmission
case.
54. Remove seal rings from drum support.
55. Remove needle bearing from drum support edge surface.Tool number : KV31102400 (J-34285 and J- 34285-87)
SCIA5582E
SCIA2324E
SCIA3333E
SCIA2796E

DISASSEMBLY
AT-253
< SERVICE INFORMATION >
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56. Remove reverse brake piston from transmission case with com-
pressed air. Refer to AT-235, "
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.
58. Knock out retaining pin using suitable tool.
59. Remove manual shaft retaining pin using suitable tool.
SCIA5047E
SCIA5340E
SCIA2328E
SCIA5218E

AT-254
< SERVICE INFORMATION >
DISASSEMBLY
60. Remove manual plate (with parking rod) from manual shaft.
61. Remove parking rod from manual plate.
62. Remove manual shaft from transmission case.
63. Remove manual shaft oil seals using suitable tool.
CAUTION:
Be careful not to scratch transmission case.
64. Remove detent spring and spacer from transmission case.
SCIA5219E
SCIA5220E
SCIA5716E
SCIA5355E
SCIA5248E

DISASSEMBLY
AT-255
< SERVICE INFORMATION >
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65. Remove snap ring from transmission case using suitable tool.
66. Remove servo assembly (with return spring) from transmission
case.
67. Remove return spring from servo assembly.
68. Remove O-rings from servo assembly.
SCIA2333E
SCIA2334E
SCIA5717E
SCIA5719E

AT-256
< SERVICE INFORMATION >
DISASSEMBLY
69. Remove parking actuator support from rear extension (2WD
models) or adapter case (4WD models).
70. Remove parking pawl (with return spring) and pawl shaft from
rear extension (2WD models) or adapter case (4WD models).
71. Remove return spring (1) from parking pawl (2).
72. Remove needle bearing from rear extension (2WD models) or
adapter case (4WD models).
SCIA3423E
SCIA3424E
SCIA6180E
SCIA5221E

DISASSEMBLY
AT-257
< SERVICE INFORMATION >
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73. Remove rear oil seal from rear extension (2WD models) or
adapter case (4WD models) using suitable tool.
CAUTION:
Be careful not to scratch rear extension (2WD models) or
adapter case (4WD models).
SCIA5272E

AT-258
< SERVICE INFORMATION >
REPAIR FOR COMPONENT PARTS
REPAIR FOR COMPONENT PARTS
Oil PumpINFOID:0000000003532487
COMPONENTS
DISASSEMBLY
1. Remove oil pump housing from oil pump cover.
2. Remove oil pump housing oil seal using suitable tool.
CAUTION:
Be careful not to scratch oil pump housing.
1. O-ring 2. Oil pump cover 3. O-ring
4. Oil pump housing 5. Oil pump housing oil seal
SCIA5227E
SCIA5228E
SCIA2840E

REPAIR FOR COMPONENT PARTS
AT-259
< SERVICE INFORMATION >
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3. Remove O-ring from oil pump housing.
4. Remove O-ring from oil pump cover.
ASSEMBLY
1. Install new O-ring to oil pump cover.
CAUTION:
• Do not reuse O-ring.
• Apply ATF to O-ring.
2. Install new O-ring to oil pump housing.
CAUTION:
• Do not reuse O-ring.
• Apply ATF to O-ring.
SCIA2841E
SCIA5230E
SCIA5230E
SCIA2841E

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