2008 INFINITI QX56 transmission

DISASSEMBLYTM-241
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43. Remove rear extension assembly (2WD models) or adapter case assembly (4WD models) according to the following procedures.
a. 2WD models
i. Remove bolts and brackets (1) From rear extension assembly and transmission case.
• Self-sealing bolts (2)
ii. Tap rear extension assembly with soft hammer.
iii. Remove rear extension assembly (with needle bearing) from transmission case.
WCIA0562E
SCIA5028E
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Revision: March 2010 2008 QX56

TM-242
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
b.4WD models
i. Remove adapter case to transmission case bolts and terminal brackets (1).
• Self-sealing bolt (2)
ii. Tap adapter case assembly using suitable tool.
iii. Remove adapter case assembly (with needle bearing) from transmission case.
iv. Remove gasket from transmission case.
WCIA0563E
SCIA5201E
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Revision: March 2010 2008 QX56

DISASSEMBLYTM-243
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44. Remove bearing race from output shaft.
45. Remove output shaft from transmission case by rotating left and right.
46. Remove parking gear from output shaft.
47. Remove seal rings from output shaft.
48. Remove needle bearing from transmission case.
SCIA5245E
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SCIA5031E
Revision: March 2010 2008 QX56

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
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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

DISASSEMBLYTM-247
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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

ASSEMBLYTM-269
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ASSEMBLY
Assembly (1)INFOID:0000000004917902
1. Drive manual shaft oil seals into the transmission case until they are flush using suitable tool.
CAUTION:
• Apply ATF to manual shaft oil seals.
• Do not reuse manual shaft oil seals.
2. Install detent spring and spacer in transmission case and secure with the bolt.
3. Install manual shaft to transmission case.
4. Install parking rod to manual plate.
SCIA5259E
Bolt : 7.9 N·m (0.81 kg-m, 70 in-lb)
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SCIA5716E
SCIA5220E
Revision: March 2010 2008 QX56

TM-270
< DISASSEMBLY AND ASSEMBLY >
ASSEMBLY
5. Install manual plate (with parking rod) to manual shaft.
6. Install retaining pin into the manual plate and manual shaft.
a. Align pinhole of the manual plate to pinhole of the manual shaftusing suitable tool.
b. Tap the retaining pin into the manual plate using suitable tool. CAUTION:
• Drive retaining pin to 2 ± 0.5 mm (0.08 ± 0.020 in) over the
manual plate.
• Do not reuse retaining pin.
7. Install retaining pin into the transmission case and manual shaft.
a. Align pinhole of the transmission case to pinhole of the manual shaft using suitable tool.
b. Tap the retaining pin into the transmission case using suitable tool.
CAUTION:
• Drive retaining pin to 5 ± 1 mm (0.20 ± 0.04 in) over the
transmission case.
• Do not reuse retaining pin.
8. Install O-rings to servo assembly. CAUTION:
• Do not reuse O-rings.
• Apply petroleum jelly to O-rings.
9. Install return spring to servo assembly.
SCIA5715E
SCIA5297E
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SCIA5717E
Revision: March 2010 2008 QX56