INFINITI QX56 2008 Factory Service Manual

TM-244
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
49. Remove output speed sensor (1) 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.
53. Remove reverse brake drive plates, driven plates and dish plate from transmission case.
•Check facing for burns, cracks or damage. If necessary,
replace the plate.
54. Remove snap ring using suitable tool.
JSDIA1321ZZ
SCIA5032E
SCIA5214E
SCIA2322E
SCIA2323E
Revision: March 2010 2008 QX56

DISASSEMBLYTM-245
< DISASSEMBLY AND ASSEMBLY >
CEF
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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.
58. Remove reverse brake piston from transmission case using compressed air. Refer to TM-227, "
Oil Channel".
CAUTION:
Care should be taken not to ab ruptly blow air. It makes the
piston incline, and as a result , it becomes hard to disas-
semble the pistons.
SCIA2324E
SCIA3333E
SCIA2796E
SCIA5047E
Revision: March 2010 2008 QX56

TM-246
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
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.
62. Remove manual plate (with parking rod) from manual shaft.
63. Remove parking rod from manual plate.
SCIA6330E
SCIA2328E
SCIA2329E
SCIA5715E
SCIA5220E
Revision: March 20102008 QX56

DISASSEMBLYTM-247
< DISASSEMBLY AND ASSEMBLY >
CEF
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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.
67. Remove snap ring from transmission case using suitable tool.
68. Remove servo assembly (with return spring) from transmission case.
SCIA5716E
SCIA2331E
SCIA5248E
SCIA2333E
SCIA5679E
Revision: March 2010 2008 QX56

TM-248
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
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).
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).
SCIA5717E
SCIA5719E
SCIA6179J
SCIA3423E
SCIA3424E
Revision: March 2010 2008 QX56

DISASSEMBLYTM-249
< DISASSEMBLY AND ASSEMBLY >
CEF
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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).
SCIA6180J
SCIA5272E
Revision: March 2010 2008 QX56

TM-250
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
REPAIR FOR COMPONENT PARTS
Oil PumpINFOID:0000000004917896
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 scrat ch oil pump housing.
1. O-ring 2. Oil pump cover3. O-ring
4. Oil pump housing 5. Oil pump housing oil seal
SCIA5227E
SCIA5228E
SCIA2840E
Revision: March 2010 2008 QX56

REPAIR FOR COMPONENT PARTSTM-251
< DISASSEMBLY AND ASSEMBLY >
CEF
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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
Revision: March 2010 2008 QX56

TM-252
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
3. Install new oil pump housing oil seal to the oil pump housinguntil 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.
Front Sun Gear, 3rd One-Way ClutchINFOID:0000000004917897
COMPONENTS
DISASSEMBLY
Tool number : ST33400001 (J-26082)
SCIA5313E
SCIA5228E
1. Front sun gear 2. 3rd one-way clutch3. Snap ring
SCIA3114E
Revision: March 2010 2008 QX56

REPAIR FOR COMPONENT PARTSTM-253
< DISASSEMBLY AND ASSEMBLY >
CEF
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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.
SCIA3110E
SCIA3111E
SCIA3111E
Revision: March 2010 2008 QX56