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Home >> Infiniti >> 2005 >> QX56 AWD >> Repair and Diagnosis >> Transmission >> Automatic Transmission >> Disassembly >> Disassembly

Automatic Transmission: Disassembly: Disassembly

CAUTION: Do not disassemble parts behind Drum Support. Refer to "CROSS-SECTIONAL VIEW (2WD MODELS) " or "CROSS-SECTIONAL VIEW (4WD MODELS) ".
  1. Drain ATF through drain plug.
  2. Remove torque converter by holding it firmly and turning while pulling straight out.
    Fig 1: Removing Torque Converter
    G02382667Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Check torque converter one-way clutch using check tool as shown.
    1. Insert check tool into the groove of bearing support built into one-way clutch outer race.
    2. When fixing bearing support with check tool, rotate one- way clutch spline using screwdriver.
    3. Check that inner race rotates clockwise only. If not, replace torque converter assembly.
    Fig 2: Checking Torque Converter One-Way Clutch
    G02382668Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Remove converter housing from transmission case.
    CAUTION: Be careful not to scratch converter housing.
    Fig 3: Removing Converter Housing From Transmission Case
    G02382669Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Remove O-ring from input clutch assembly.
    Fig 4: Removing O-Ring From Input Clutch Assembly
    G02382670Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Remove tightening bolts for oil pump assembly and transmission case.
    Fig 5: Removing Oil Pump Assembly & Transmission Case Bolts
    G02382671Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Attach sliding hammer to oil pump assembly and extract it evenly from transmission case.
    CAUTION:
    • Fully tighten sliding hammer screw.
    • Make sure that bearing race is installed to the oil pump assembly edge surface.
    Fig 6: Attaching Sliding Hammers To Oil Pump Assembly
    G02382672Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Remove O-ring from oil pump assembly.
    Fig 7: Removing O-Ring From Oil Pump Assembly
    G02382673Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove bearing race from oil pump assembly.
    Fig 8: Removing Bearing Race From Oil Pump Assembly
    G02382674Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Remove needle bearing from front sun gear assembly.
    Fig 9: Removing Needle Bearing From Front Sun Gear
    G02382675Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove front sun gear assembly from front carrier assembly.
    NOTE: Remove front sun gear assembly by rotating left/right.
    Fig 10: Removing Front Sun Gear Assembly From Front Carrier Assembly
    G02382676Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove seal rings from input clutch assembly.
    Fig 11: Removing Seal Rings From Input Clutch Assembly
    G02382677Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove front carrier assembly, input clutch assembly and rear internal gear as a unit.
    CAUTION: Be careful to remove it with needle bearing.
    Fig 12: Removing Front Carrier Assembly, Input Clutch Assembly & Rear Internal Gear As A Unit
    G02382678Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Loosen lock nut and remove band servo anchor end pin from transmission case.
    Fig 13: Removing Band Servo Anchor End Pin From Transmission Case
    G02382679Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Remove brake band from transmission case.
    Fig 14: Removing Brake Band From Transmission Case
    G02382680Courtesy of NISSAN MOTOR CO., U.S.A.
    • 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 in the figure at left. 

      Leave the clip in position after removing the brake band. 

    • Check brake band facing for damage, cracks, wear or burns. 
    Fig 15: Securing Brake Band With Clip
    G02382681Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Remove mid carrier assembly and rear carrier assembly as a unit.
    Fig 16: Removing Mid Carrier Assembly & Rear Carrier Assembly As Unit
    G02382682Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Remove mid carrier assembly from rear carrier assembly.
    Fig 17: Removing Mid Carrier Assembly From Rear Carrier Assembly
    G02382683Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Remove needle bearing (front side) from mid carrier assembly.
    Fig 18: Removing Needle Bearing (Front Side) From Mid Carrier Assembly
    G02382684Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove needle bearing (rear side) from mid carrier assembly.
    Fig 19: Removing Needle Bearing (Rear Side) From Mid Carrier Assembly
    G02382685Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Remove bearing race from rear carrier assembly.
    Fig 20: Removing Bearing Race From Rear Carrier Assembly
    G02382686Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Remove needle bearing from rear carrier assembly.
    Fig 21: Removing Needle Bearing From Rear Carrier Assembly
    G02382687Courtesy 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: Be careful to remove then with bearing races and needle bearing.
    Fig 22: Removing Mid Sun Gear Assembly & Rear Sun Gear Assembly
    G02382688Courtesy 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: Removing High & Low Reverse Clutch Assembly From Direct Clutch Assembly
    G02382689Courtesy of NISSAN MOTOR CO., U.S.A.
  24. Remove direct clutch assembly from reverse brake.
    Fig 24: Removing Direct Clutch Assembly From Reverse Brake
    G02382690Courtesy of NISSAN MOTOR CO., U.S.A.
  25. Remove needle bearing from drum support edge surface.
    Fig 25: Removing Needle Bearing From Drum Support
    G02382691Courtesy of NISSAN MOTOR CO., U.S.A.
  26. Remove snap ring from A/T assembly harness connector.
    Fig 26: Removing Snap Ring From A/T Assembly Harness Connector
    G02382692Courtesy of NISSAN MOTOR CO., U.S.A.
  27. Push A/T assembly harness connector.
    CAUTION: Be careful not to damage connector.
    Fig 27: Pushing A/T Assembly Harness Connector
    G02382693Courtesy of NISSAN MOTOR CO., U.S.A.
  28. Remove oil pan and oil pan gasket, refer to "REMOVAL ".
  29. Disconnect A/T fluid temperature sensor 2 connector.
    CAUTION: Be careful not to damage connector.
    Fig 28: Disconnecting A/T Fluid Temperature Sensor 2 Connector
    G02382694Courtesy of NISSAN MOTOR CO., U.S.A.
  30. Straighten terminal clip to free terminal cord assembly and A/T fluid temperature sensor 2 harness.
    Fig 29: Removing Terminal Cord Assembly & A/T Fluid Temperature Sensor 2 Harness
    G02382695Courtesy of NISSAN MOTOR CO., U.S.A.
  31. Disconnect revolution sensor connector.
    CAUTION: Be careful not to damage connector.
    Fig 30: Disconnecting Revolution Sensor Connector
    G02382696Courtesy of NISSAN MOTOR CO., U.S.A.
  32. Straighten terminal clips to free revolution sensor harness.
    Fig 31: Removing Revolution Sensor Harness
    G02382697Courtesy of NISSAN MOTOR CO., U.S.A.
  33. Remove bolts A, B and C from control valve with TCM.
    CONTROL VALVE WITH TCM BOLTS SPECIFICATIONS TABLE

    Bolt symbol Length mm (in) Number of bolts
    A 42 (1.65) 5
    B 55 (2.17) 6
    C 40 (1.57) 1
    Fig 32: Identifying Control Valve & TCM Bolts
    G02382698Courtesy of NISSAN MOTOR CO., U.S.A.
  34. Remove control valve with TCM from transmission case.
    CAUTION: When removing, be careful with transmission assembly terminal connector and the manual valve notch and manual plate height. Remove it vertically.
    Fig 33: Removing Control Valve & TCM From Transmission Case
    G02382699Courtesy of NISSAN MOTOR CO., U.S.A.
  35. Remove A/T fluid temperature sensor 2 with bracket from control valve with TCM.
    Fig 34: Removing A/T Fluid Temperature Sensor 2 With Bracket From Control Valve With TCM
    G02382700Courtesy of NISSAN MOTOR CO., U.S.A.
  36. Remove bracket from A/T fluid temperature sensor 2.
    Fig 35: Removing Bracket From A/T Fluid Temperature Sensor 2
    G02382701Courtesy of NISSAN MOTOR CO., U.S.A.
  37. Remove O-ring from A/T assembly harness connector.
    Fig 36: Removing O-Ring From A/T Assembly Harness Connector
    G02382702Courtesy of NISSAN MOTOR CO., U.S.A.
  38. Disconnect TCM connectors.
    CAUTION: Be careful not to damage connectors.
    Fig 37: Disconnecting TCM Connectors
    G02382703Courtesy of NISSAN MOTOR CO., U.S.A.
  39. Remove A/T assembly harness connector from control valve with TCM using flat blade screwdriver.
    Fig 38: Removing A/T Assembly Harness Connector From Control Valve With TCM
    G02382704Courtesy of NISSAN MOTOR CO., U.S.A.
  40. Disconnect TCM connector and park/neutral position switch connector.
    CAUTION: Be careful not to damage connectors.
    Fig 39: Disconnecting TCM Connector And Park/Neutral Position Switch Connector
    G02382705Courtesy of NISSAN MOTOR CO., U.S.A.
  41. Remove rear extension assembly (2WD models) or adapter case assembly (4WD models) according to the following procedures.
    1. 2WD models 
      1. Remove tightening bolts for rear extension assembly and transmission case.
      2. Remove bracket.
        Fig 40: Removing Tightening Bolts For Rear Extension Assembly & Transmission Case (2WD Models)
        G02382706Courtesy of NISSAN MOTOR CO., U.S.A.
      3. Tap rear extension assembly with soft hammer.
        Fig 41: Tapping Rear Extension Assembly
        G02382707Courtesy of NISSAN MOTOR CO., U.S.A.
      4. Remove rear extension assembly from transmission case. (With needle bearing)
        Fig 42: Removing Rear Extension Assembly From Transmission Case
        G02382708Courtesy of NISSAN MOTOR CO., U.S.A.
    2. 4WD models 
      1. Remove tightening bolts for adapter case assembly and transmission case.
      2. Remove bracket.
        Fig 43: Removing Tightening Bolts For Adapter Case Assembly & Transmission Case (4WD Models)
        G02382709Courtesy of NISSAN MOTOR CO., U.S.A.
      3. Tap adapter case assembly with soft hammer.
      4. Remove adapter case assembly from transmission case. (With needle bearing)
        Fig 44: Removing Adapter Case Assembly
        G02382710Courtesy of NISSAN MOTOR CO., U.S.A.
      5. Remove gasket from transmission case.
        Fig 45: Removing Gasket From Transmission Case
        G02382711Courtesy of NISSAN MOTOR CO., U.S.A.
  42. Remove bearing race from output shaft.
    Fig 46: Removing Bearing Race From Output Shaft
    G02382712Courtesy of NISSAN MOTOR CO., U.S.A.
  43. Remove output shaft from transmission case by rotating left/right.
    Fig 47: Removing Output Shaft From Transmission Case
    G02382713Courtesy of NISSAN MOTOR CO., U.S.A.
  44. Remove parking gear from output shaft.
    Fig 48: Removing Parking Gear From Output Shaft
    G02382714Courtesy of NISSAN MOTOR CO., U.S.A.
  45. Remove seal rings from output shaft.
    Fig 49: Removing Seal Rings From Output Shaft
    G02382715Courtesy of NISSAN MOTOR CO., U.S.A.
  46. Remove needle bearing from transmission case.
    Fig 50: Removing Needle Bearing From Transmission Case
    G02382716Courtesy of NISSAN MOTOR CO., U.S.A.
  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, etc., to get on the sensor's front edge magnetic area.
    • Do not place in an area affected by magnetism.
    Fig 51: Removing Revolution Sensor From Transmission Case
    G02382717Courtesy of NISSAN MOTOR CO., U.S.A.
  48. Remove reverse brake snap ring (fixing plate) using 2 flatbladed screwdrivers.
    NOTE: Press out snap ring from the transmission case oil pan side gap using a flat-bladed screwdriver, and remove it using another screwdriver.
    Fig 52: Removing Reverse Brake Snap Ring (Fixing Plate)
    G02382718Courtesy of NISSAN MOTOR CO., U.S.A.
  49. Remove reverse brake retaining plate from transmission case.
  50. Remove N-spring from transmission case.
    Fig 53: Removing N-Spring From Transmission Case
    G02382719Courtesy of NISSAN MOTOR CO., U.S.A.
  51. Remove reverse brake drive plates, driven plates and dish plate from transmission case.
    Fig 54: Removing Reverse Brake Drive Plates, Driven Plates & Dish Plate From Transmission Case
    G02382720Courtesy of NISSAN MOTOR CO., U.S.A.
  52. Remove snap ring (fixing spring retainer) from transmission case while compressing return spring, using Tool.
    1. Tool number: KV31102400 (J-34285 and J- 34285-87) 
    Fig 55: Removing Snap Ring (Fixing Spring Retainer) From Transmission Case
    G02382721Courtesy of NISSAN MOTOR CO., U.S.A.
  53. Remove spring retainer and return spring from transmission case.
    Fig 56: Removing Spring Retainer & Return Spring From Transmission Case
    G02382722Courtesy of NISSAN MOTOR CO., U.S.A.
  54. Remove seal rings from drum support.
    Fig 57: Removing Seal Rings From Drum Support
    G02382723Courtesy of NISSAN MOTOR CO., U.S.A.
  55. Remove needle bearing from drum support edge surface.
    Fig 58: Removing Needle Bearing From Drum Support Edge Surface
    G02382724Courtesy of NISSAN MOTOR CO., U.S.A.
  56. Remove reverse brake piston from transmission case with compressed air. Refer to "OIL CHANNEL ".
    CAUTION: Care should be taken not to abruptly blow air. It makes pistons incline, as the result, it becomes hard to disassemble the pistons.
    Fig 59: Removing Reverse Brake Piston From Transmission Case With Compressed Air
    G02382725Courtesy of NISSAN MOTOR CO., U.S.A.
  57. Remove D-rings from reverse brake piston.
    Fig 60: Removing D-Rings From Reverse Brake Piston
    G02382726Courtesy of NISSAN MOTOR CO., U.S.A.
  58. Use a pin punch (4 mm dia. commercial service tool) to knock out retaining pin.
    Fig 61: Knocking Out Retaining Pin
    G02382727Courtesy of NISSAN MOTOR CO., U.S.A.
  59. Remove manual shaft retaining pin with pliers.
    Fig 62: Removing Manual Shaft Retaining Pin
    G02382728Courtesy of NISSAN MOTOR CO., U.S.A.
  60. Remove manual plate (with parking rod) from manual shaft.
    Fig 63: Removing Manual Plate (With Parking Rod) From Manual Shaft
    G02382729Courtesy of NISSAN MOTOR CO., U.S.A.
  61. Remove parking rod from manual plate.
    Fig 64: Removing Parking Rod From Manual Plate
    G02382730Courtesy of NISSAN MOTOR CO., U.S.A.
  62. Remove manual shaft from transmission case.
    Fig 65: Removing Manual Shaft From Transmission Case
    G02382731Courtesy of NISSAN MOTOR CO., U.S.A.
  63. Remove manual shaft oil seals using a flat-bladed screwdriver.
    CAUTION: Be careful not to scratch transmission case.
    Fig 66: Removing Manual Shaft Oil Seals
    G02382732Courtesy of NISSAN MOTOR CO., U.S.A.
  64. Remove detent spring and spacer from transmission case.
    Fig 67: Removing Detent Spring & Spacer From Transmission Case
    G02382733Courtesy of NISSAN MOTOR CO., U.S.A.
  65. Remove snap ring from transmission case, using suitable tool.
    Fig 68: Removing Snap Ring From Transmission Case
    G02382734Courtesy of NISSAN MOTOR CO., U.S.A.
  66. Remove servo assembly (with return spring) from transmission case.
    Fig 69: Removing Servo Assembly (With Return Spring) From Transmission Case
    G02382735Courtesy of NISSAN MOTOR CO., U.S.A.
  67. Remove return spring from servo assembly.
    Fig 70: Removing Return Spring From Servo Assembly
    G02382736Courtesy of NISSAN MOTOR CO., U.S.A.
  68. Remove O-rings from servo assembly.
    Fig 71: Removing O-Rings From Servo Assembly
    G02382737Courtesy of NISSAN MOTOR CO., U.S.A.
  69. Remove parking actuator support from rear extension (2WD models) or adapter case (4WD models).
    Fig 72: Removing Parking Actuator Support From Rear Extension (2WD Models) Or Adapter Case (4WD Models)
    G02382738Courtesy of NISSAN MOTOR CO., U.S.A.
  70. Remove parking pawl (with return spring) and pawl shaft from rear extension (2WD models) or adapter case (4WD models).
    Fig 73: Removing Parking Pawl (With Return Spring) And Pawl Shaft From Rear Extension (2WD Models) Or Adapter Case (4WD Models)
    G02382739Courtesy of NISSAN MOTOR CO., U.S.A.
  71. Remove return spring from parking pawl.
    Fig 74: Removing Return Spring From Parking Pawl
    G02382740Courtesy of NISSAN MOTOR CO., U.S.A.
  72. Remove needle bearing from rear extension (2WD models) or adapter case (4WD models).
    Fig 75: Removing Needle Bearing From Rear Extension (2WD Models) Or Adapter Case (4WD Models)
    G02382741Courtesy of NISSAN MOTOR CO., U.S.A.
  73. Remove rear oil seal from rear extension (2WD models) or adapter case (4WD models).
    CAUTION: Be careful not to scratch rear extension (2WD models) or adapter case (4WD models).
    Fig 76: Removing Rear Oil Seal From Rear Extension (2WD Models) Or Adapter Case (4WD Models)
    G02382742Courtesy of NISSAN MOTOR CO., U.S.A.
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