INFINITI QX56 2009 Factory Service Manual

DISASSEMBLYTM-243
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47. Remove seal rings from output shaft.
48. Remove needle bearing from transmission case.
49. Remove output speed sensor from transmission case. CAUTION:
 Do not subject it to impact by dropping or hitting it.
 Do not disassemble.
 Do not allow metal filings or any foreign material to get on
the sensor's front edge magnetic area.
 Do not place in an area affected by magnetism.
50. Remove reverse brake snap ring using two flat-bladed screw- drivers.
NOTE:
Press out snap ring from the transmission case oil pan side gap
using a flat-bladed screwdriver, and remove it using a another
screwdriver.
51. Remove reverse brake retaining plate from transmission case.  Check facing for burns, cracks or damage. If necessary,replace the plate.
52. Remove N-spring from transmission case.
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TM-244
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
53. Remove reverse brake drive plates, driven plates and dish platefrom transmission case.
Check facing for burns, cracks or damage. If necessary,
replace the plate.
54. Remove snap ring using suitable tool.
55. Remove spring retainer and return spring from transmission case.
56. Remove seal rings from drum support.
57. Remove needle bearing from drum support edge surface.
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DISASSEMBLYTM-245
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58. Remove reverse brake piston from transmission case using compressed air. Refer to TM-227, "Oil Channel"
.
CAUTION:
Care should be taken not to abruptly blow air. It makes the
piston incline, and as a result , it becomes hard to disas-
semble the pistons.
59. Remove D-rings from reverse brake piston.
60. Knock out retaining pin using suitable tool.
61. Remove manual shaft retaining pin using suitable tool.
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TM-246
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DISASSEMBLY
62. Remove manual plate (with parking rod) from manual shaft.
63. Remove parking rod from manual plate.
64. Remove manual shaft from transmission case.
65. Remove manual shaft oil seals using suitable tool.CAUTION:
Do not scratch transmission case.
66. Remove detent spring and spacer from transmission case.
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DISASSEMBLYTM-247
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67. Remove snap ring from transmission case using suitable tool.
68. Remove servo assembly (with return spring) from transmission case.
69. Remove return spring from servo assembly.
70. Remove O-rings from servo assembly.
71. Remove needle bearing (1) from rear extension (2WD models) or adapter case (4WD models).
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TM-248
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DISASSEMBLY
72. Remove parking actuator support from rear extension (2WD
models) or adapter case (4WD models).
73. Remove parking pawl (with return spring) and pawl shaft from rear extension (2WD models) or adapter case (4WD models).
74. Remove return spring (1) from parking pawl (2).
75. Remove rear oil seal from rear extension (2WD models) or adapter case (4WD models) using suitable tool.
CAUTION:
Do not scratch rear extension (2WD models) or adapter
case (4WD models).
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REPAIR FOR COMPONENT PARTSTM-249
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REPAIR FOR COMPONENT PARTS
Oil PumpINFOID:0000000004187490
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
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TM-250
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REPAIR FOR COMPONENT PARTS
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.
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REPAIR FOR COMPONENT PARTSTM-251
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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 TM-220, "Compo-
nent".
Front Sun Gear, 3rd One-Way ClutchINFOID:0000000004187491
COMPONENTS
DISASSEMBLY
Tool number : ST33400001 (J-26082)
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1. Front sun gear 2. 3rd one-way clutch 3. Snap ring
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TM-252
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REPAIR FOR COMPONENT PARTS
1. Remove snap ring from front sun gear using suitable tool.
2. Remove 3rd one-way clutch from front sun gear.
INSPECTION
3rd One-way Clutch
 Check frictional surface for wear or damage.CAUTION:
If necessary, replace the 3rd one-way clutch.
Front Sun Gear Snap Ring
 Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the snap ring.
Front Sun Gear
 Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the front sun gear.
ASSEMBLY
1. Install 3rd one-way clutch in front sun gear. CAUTION:
Apply ATF to 3rd one-way clutch.
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Revision: December 20092009 QX56