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Home › Infiniti › 2010 › QX56 AWD › Repair and Diagnosis › Transmission › Automatic Transmission › Disassembly And Assembly › Disassembly › Disassembly

Disassembly And Assembly: Disassembly: Disassembly

CAUTION: Do not disassemble parts behind Drum Support. Refer to "CROSS-SECTIONAL VIEW (2WD MODELS) ".
  1. Drain A/T fluid through drain plug.
  2. Remove torque converter by holding it firmly and turing while pulling straight out.
    Fig 1: Identifying Torque Converter
    G04876017Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Check torque converter one-way clutch using a check tool as shown.
    1. Insert a check tool into the groove of bearing support built into one-way clutch outer race.
    2. While holding bearing support with a check tool, rotate one-way clutch spline using suitable tool.
    3. Make sure that inner race rotates clockwise only. If not, replace torque converter assembly.
      Fig 2: Checking Torque Converter One-Way Clutch
      G04876018Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Remove bolts and converter housing from transmission case.
    CAUTION: Do not scratch converter housing.
    • Self-sealing bolt (A)
      Fig 3: Locating Converter Housing Bolt And Self-Sealing Bolt
      G04898125Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Remove O-ring from input clutch assembly.
    Fig 4: Identifying Input Clutch Assembly O-Ring
    G04876020Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Remove oil pump assembly to transmission case bolts.
    Fig 5: Locating Oil Pump Bolts
    G04876021Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Remove the oil pump assembly evenly from the transmission case using Tools.

    Tool number: ST25850000 (J-25721-A) 

    CAUTION:
    • Fully tighten the sliding hammer screws.
    • Make sure that bearing race is installed to the oil pump assembly edge surface.
      Fig 6: Removing Oil Pump Assembly From Transmission Case Using Tools
      G04901181Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Remove O-ring from oil pump assembly.
    Fig 7: Identifying Oil Pump Assembly O-Ring
    G04876023Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove bearing race from oil pump assembly.
    Fig 8: Identifying Oil Pump Assembly Bearing Race
    G04876024Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Remove needle bearing from front sun gear.
    Fig 9: Identifying Front Sun Gear Needle Bearing
    G04876025Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove front sun gear assembly from front carrier assembly.
    NOTE: Remove front sun gear by rotating it left and right.
    Fig 10: Identifying Front Sun Gear Assembly
    G04876026Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove seal rings from input clutch assembly.
    Fig 11: Identifying Input Clutch Assembly Seal Rings
    G04876027Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove front carrier assembly (with input clutch assembly and rear internal gear) from rear carrier assembly.
    CAUTION: Do not remove it with needle bearing.
    Fig 12: Identifying Front Carrier Assembly
    G04876028Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Loosen lock nut and remove band servo anchor end pin from transmission case.
    Fig 13: Identifying Band Servo Anchor End Pin And Lock Nut
    G04876029Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Remove brake band from transmission case.
    Fig 14: Identifying Transmission Case Brake Band
    G04876030Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • 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.
    • Check brake band facing for damage, cracks, wear or burns.
      Fig 15: Identifying Brake Band Clip
      G04876031Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Remove mid carrier assembly and rear carrier assembly as a unit.
    Fig 16: Identifying Mid Carrier Assembly
    G04876032Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Remove mid carrier assembly from rear carrier assembly.
    Fig 17: Identifying Mid Carrier Assembly And Rear Carrier Assembly
    G04876033Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Remove needle bearing (front side) from mid carrier assembly.
    Fig 18: Identifying Needle Bearing And Mid Carrier Assembly
    G04876034Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove needle bearing (rear side) from mid carrier assembly.
    Fig 19: Identifying Needle Bearing (Rear Side) And Mid Carrier Assembly
    G04876035Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Remove bearing race from rear carrier assembly.
    Fig 20: Identifying Bearing Race And Rear Carrier Assembly
    G04876036Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Remove needle bearing from rear carrier assembly.
    Fig 21: Identifying Needle Bearing And Rear Carrier Assembly
    G04876037Courtesy of NISSAN MOTOR CO., U.S.A.
  22. Remove mid sun gear assembly, rear sun gear assembly and high and low reverse clutch hub as a unit.
    CAUTION: Remove them with bearing race and needle bearing.
    Fig 22: Identifying Mid Sun Gear Assembly And Rear Sun Gear Assembly
    G04876038Courtesy of NISSAN MOTOR CO., U.S.A.
  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.
    Fig 23: Identifying High And Low Reverse Clutch Assembly
    G04876039Courtesy of NISSAN MOTOR CO., U.S.A.
  24. Remove needle bearing from drum support.
    Fig 24: Identifying Needle Bearing And Drum Support
    G04876041Courtesy of NISSAN MOTOR CO., U.S.A.
  25. Remove direct clutch assembly from reverse brake.
    Fig 25: Identifying Direct Clutch Assembly
    G04876040Courtesy of NISSAN MOTOR CO., U.S.A.
  26. Remove snap ring from A/T assembly harness connector.
    Fig 26: Identifying A/T Assembly Harness Connector And Snap Ring
    G04875907Courtesy of NISSAN MOTOR CO., U.S.A.
  27. Push A/T assembly harness connector.
    CAUTION: Do not damage connector.
    Fig 27: Identifying A/T Assembly Harness Connector
    G04875908Courtesy of NISSAN MOTOR CO., U.S.A.
  28. Remove oil pan and oil pan gasket. Refer to "OIL PAN ".
  29. Check foreign materials in oil pan to help determine causes of malfunction. If the A/T fluid is very dark, smells burned, or contains foreign particles, the frictional material (clutches, band) may need replacement. A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and clutches to stick and can inhibit pump pressure.
    • If frictional material is detected, perform A/T fluid cooler cleaning.  Refer to "A/T FLUID COOLER CLEANING ".
      Fig 28: Checking Foreign Materials In Oil Pan
      G04875910Courtesy of NISSAN MOTOR CO., U.S.A.
  30. Remove magnets from oil pan.
    Fig 29: Identifying Oil Pan Magnets
    G04875911Courtesy of NISSAN MOTOR CO., U.S.A.
  31. Disconnect A/T fluid temperature sensor 2 connector (A).
    CAUTION: Do not damage connector.
  32. Straighten terminal clip ==> to free terminal cord assembly and A/T fluid temperature sensor 2 harness.
    Fig 30: Identifying A/T Fluid Temperature Sensor Connector
    G04875912Courtesy of NISSAN MOTOR CO., U.S.A.
  33. Disconnect revolution sensor connector.
    CAUTION: Do not damage connector.
    Fig 31: Identifying Revolution Sensor Connector
    G04875913Courtesy of NISSAN MOTOR CO., U.S.A.
  34. Straighten terminal clip to free revolution sensor harness.
    Fig 32: Identifying Revolution Sensor Connector And Terminal Clip
    G04876049Courtesy of NISSAN MOTOR CO., U.S.A.
  35. Remove bolts (A), (B) and (C) from control valve with TCM.
    • <==: Front
      BOLTS SPECIFICATION

      Bolt symbol Length mm (in) Number of bolts
      A 42 (1.65) 5
      B 55 (2.17) 6
      C 40 (1.57) 1
      Fig 33: Identifying Bolts For Control Valve With TCM
      G04876050Courtesy of NISSAN MOTOR CO., U.S.A.
  36. Remove control valve with TCM from transmission case.
    CAUTION: When removing, be careful with the manual valve notch and manual plate height. Remove it vertically.
    Fig 34: Identifying Control Valve With TCM
    G04876051Courtesy of NISSAN MOTOR CO., U.S.A.
  37. Remove A/T fluid temperature sensor 2 with bracket from control valve with TCM.
    Fig 35: Identifying A/T Fluid Temperature Sensor 2 And Bracket
    G04901144Courtesy of NISSAN MOTOR CO., U.S.A.
  38. Remove bracket from A/T fluid temperature sensor 2.
    Fig 36: Identifying Bracket And A/T Fluid Temperature Sensor 2
    G04875918Courtesy of NISSAN MOTOR CO., U.S.A.
  39. Remove O-ring from A/T assembly harness connector.
    Fig 37: Identifying A/T Assembly Harness Connector And O-Ring
    G04875919Courtesy of NISSAN MOTOR CO., U.S.A.
  40. Disconnect TCM connectors.
    CAUTION: Do not damage connectors.
    Fig 38: Identifying TCM Connectors
    G04875920Courtesy of NISSAN MOTOR CO., U.S.A.
  41. Remove A/T assembly harness connector from control valve with TCM using suitable tool.
    Fig 39: Identifying A/T Assembly Harness Connector
    G04875921Courtesy of NISSAN MOTOR CO., U.S.A.
  42. Disconnect TCM connector and park/neutral position switch connector.
    CAUTION: Do not damage connectors.
    Fig 40: Identifying TCM Connector And Park/Neutral Position Switch Connector
    G04875922Courtesy of NISSAN MOTOR CO., U.S.A.
  43. Remove rear extension assembly (2WD models) or adapter case assembly (4WD models) according to the following procedures.
    1. 2WD models 
      1. Remove bolts (1 brackets) for rear extension assembly and transmission case.
        • Self-sealing bolts (2)
          Fig 41: Locating Rear Extension Assembly Bracket Bolts And Self-Sealing Bolts
          G04901215Courtesy of NISSAN MOTOR CO., U.S.A.
      2. Tap rear extension assembly with soft hammer.
        Fig 42: Tapping Rear Extension Assembly
        G04876059Courtesy of NISSAN MOTOR CO., U.S.A.
      3. Remove rear extension assembly (with needle bearing) from transmission case.
        Fig 43: Removing/Installing Rear Extension Assembly (With Needle Bearing) From Transmission Case
        G04876060Courtesy of NISSAN MOTOR CO., U.S.A.
    2. 4WD models 
      1. Remove adapter case to transmission case bolts and terminal bracket (1).
        • Self-sealing bolt (2)
          Fig 44: Locating Terminal Brackets And Self-Sealing Bolt
          G04901218Courtesy of NISSAN MOTOR CO., U.S.A.
      2. Tap adapter case assembly using suitable tool.
        Fig 45: Taping Adapter Case Assembly
        G04898167Courtesy of NISSAN MOTOR CO., U.S.A.
      3. Remove adapter case assembly (with needle bearing) from transmission case.
        Fig 46: Identifying Adapter Case Assembly
        G04898168Courtesy of NISSAN MOTOR CO., U.S.A.
      4. Remove gasket from transmission case.
        Fig 47: Identifying Transmission Case Gasket
        G04901220Courtesy of NISSAN MOTOR CO., U.S.A.
  44. Remove bearing race from output shaft.
    Fig 48: Removing/Installing Bearing Race
    G04875958Courtesy of NISSAN MOTOR CO., U.S.A.
  45. Remove output shaft from transmission case by rotating left and right.
    Fig 49: Removing/Installing Output Shaft
    G04876062Courtesy of NISSAN MOTOR CO., U.S.A.
  46. Remove parking gear from output shaft.
    Fig 50: Identifying Parking Gear In Output Shaft
    G04875960Courtesy of NISSAN MOTOR CO., U.S.A.
  47. Remove seal rings from output shaft.
    Fig 51: Identifying Output Shaft Seal Rings
    G04875961Courtesy of NISSAN MOTOR CO., U.S.A.
  48. Remove needle bearing from transmission case.
    Fig 52: Identifying Transmission Case Needle Bearing
    G04876065Courtesy of NISSAN MOTOR CO., U.S.A.
  49. Remove revolution 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.
      Fig 53: Identifying Revolution Sensor
      G04876066Courtesy of NISSAN MOTOR CO., U.S.A.
  50. Remove reverse brake snap ring using two flat-bladed screwdrivers.
    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.
      Fig 54: Identifying Reverse Brake Retaining Plate
      G04876067Courtesy of NISSAN MOTOR CO., U.S.A.
  52. Remove N-spring from transmission case.
    Fig 55: Identifying N-Spring, Transmission Case And Drive Plate
    G04876068Courtesy of NISSAN MOTOR CO., U.S.A.
  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  .
      Fig 56: Identifying Reverse Brake Drive Plates
      G04876069Courtesy of NISSAN MOTOR CO., U.S.A.
  54. Remove snap ring using suitable tool.
    Fig 57: Identifying Snap Ring
    G04876070Courtesy of NISSAN MOTOR CO., U.S.A.
  55. Remove spring retainer and return spring from transmission case.
    Fig 58: Identifying Transmission Case Spring Retainer
    G04876071Courtesy of NISSAN MOTOR CO., U.S.A.
  56. Remove seal rings from drum support.
    Fig 59: Identifying Seal Rings
    G04876072Courtesy of NISSAN MOTOR CO., U.S.A.
  57. Remove needle bearing from drum support edge surface.
    Fig 60: Identifying Needle Bearing
    G04876073Courtesy of NISSAN MOTOR CO., U.S.A.
  58. Remove reverse brake piston from transmission case using compressed air. Refer to "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 disassemble the pistons.
    Fig 61: Identifying Reverse Brake Piston
    G04876074Courtesy of NISSAN MOTOR CO., U.S.A.
  59. Remove D-rings from reverse brake piston.
    Fig 62: Identifying D-Rings And Reverse Brake Piston
    G04876075Courtesy of NISSAN MOTOR CO., U.S.A.
  60. Knock out retaining pin using suitable tool.
    Fig 63: Identifying Retaining Pin, Manual Plate And Manual Shaft
    G04876076Courtesy of NISSAN MOTOR CO., U.S.A.
  61. Remove manual shaft retaining pin using suitable tool.
    Fig 64: Identifying Retaining Pin
    G04876077Courtesy of NISSAN MOTOR CO., U.S.A.
  62. Remove manual plate (with parking rod) from manual shaft.
    Fig 65: Identifying Manual Plate And Manual Shaft
    G04876078Courtesy of NISSAN MOTOR CO., U.S.A.
  63. Remove parking rod from manual plate.
    Fig 66: Identifying Parking Rod And Manual Plate
    G04876153Courtesy of NISSAN MOTOR CO., U.S.A.
  64. Remove manual shaft from transmission case.
    Fig 67: Identifying Manual Shaft
    G04876080Courtesy of NISSAN MOTOR CO., U.S.A.
  65. Remove manual shaft oil seals using suitable tool.
    CAUTION: Do not scratch transmission case.
    Fig 68: Identifying Manual Shaft Oil Seals
    G04876081Courtesy of NISSAN MOTOR CO., U.S.A.
  66. Remove detent spring and spacer from transmission case.
    Fig 69: Identifying Detent Spring And Spacer
    G04876082Courtesy of NISSAN MOTOR CO., U.S.A.
  67. Remove snap ring from transmission case using suitable tool.
    Fig 70: Identifying Snap Ring
    G04876083Courtesy of NISSAN MOTOR CO., U.S.A.
  68. Remove servo assembly (with return spring) from transmission case.
    Fig 71: Identifying Servo Assembly
    G04876084Courtesy of NISSAN MOTOR CO., U.S.A.
  69. Remove return spring from servo assembly.
    Fig 72: Identifying Return Spring
    G04876085Courtesy of NISSAN MOTOR CO., U.S.A.
  70. Remove O-rings from servo assembly.
    Fig 73: Identifying O-Rings
    G04876086Courtesy of NISSAN MOTOR CO., U.S.A.
  71. Remove needle bearing (1) from rear extension (2WD models) or adapter case (4WD models).
    Fig 74: Identifying Needle Bearing
    G04875973Courtesy of NISSAN MOTOR CO., U.S.A.
  72. Remove parking actuator support from rear extension (2WD models) or adapter case (4WD models).
    Fig 75: Identifying Parking Actuator Support
    G04875963Courtesy of NISSAN MOTOR CO., U.S.A.
  73. Remove parking pawl (with return spring) and pawl shaft from rear extension (2WD models) or adapter case (4WD models).
    Fig 76: Identifying Parking Pawl And Pawl Shaft
    G04875964Courtesy of NISSAN MOTOR CO., U.S.A.
  74. Remove return spring (1) from parking pawl (2).
    Fig 77: Identifying Return Spring And Parking Pawl
    G04875965Courtesy of NISSAN MOTOR CO., U.S.A.
  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).
    Fig 78: Identifying Rear Oil Seal In Rear Extension
    G04901251Courtesy of NISSAN MOTOR CO., U.S.A.
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