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Home >> Infiniti >> 2016 >> Q50 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 169 (Automatic Transmission (Symptom Diagnosis & Removal And Installation) (Except Hybrid)) >> Unit Disassembly And Assembly >> Disassembly

Unit Disassembly And Assembly: Disassembly

WARNING: This page is about a different car, the 2018 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Never disassemble parts behind drum support. Refer to Cross-Sectional View .
  1. Drain ATF through drain plug.
  2. Remove torque converter by holding it firmly and turning while pulling straight out.
    G04075765Courtesy of NISSAN NORTH AMERICA, INC.
  3. Remove tightening bolts (SYMBOL ) for converter housing and transmission case.
    GNSJSDIA1913Z-913Courtesy of NISSAN NORTH AMERICA, INC.
  4. Remove converter housing from transmission case.
    CAUTION: Be careful not to scratch converter housing.
  5. Remove O-ring from input clutch assembly.
    G04075768Courtesy of NISSAN NORTH AMERICA, INC.
  6. Remove tightening bolts (SYMBOL ) for oil pump assembly and transmission case.
    GNSJPDIA1108Z-108Courtesy of NISSAN NORTH AMERICA, INC.
  7. Attach the sliding hammers [SST: ST25850000 (J-25721-A)] (A) to oil pump assembly SYMBOL and extract it evenly from transmission case.
    GNSJPDIA1109Z-109Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : Sliding hammer attachment position
    CAUTION:
    • Fully tighten the sliding hammer screws.
    • Make sure that bearing race is installed to the oil pump assembly edge surface.
  8. Remove O-ring SYMBOL from oil pump assembly.
    GNSJPDIA1110Z-110Courtesy of NISSAN NORTH AMERICA, INC.
  9. Remove bearing race SYMBOL from oil pump assembly.
    GNSJPDIA1111Z-111Courtesy of NISSAN NORTH AMERICA, INC.
  10. Remove seal ring SYMBOL from oil pump assembly.
    GNSJSDIA1721Z-721Courtesy of NISSAN NORTH AMERICA, INC.
  11. Remove under drive sun gear SYMBOL from under drive carrier assembly.
    GNSJPDIA1112Z-112Courtesy of NISSAN NORTH AMERICA, INC.
  12. Remove needle bearing SYMBOL from under drive sun gear.
    GNSJPDIA1113Z-113Courtesy of NISSAN NORTH AMERICA, INC.
  13. Remove needle bearing SYMBOL from under drive carrier assembly.
    GNSJPDIA1114Z-114Courtesy of NISSAN NORTH AMERICA, INC.
  14. Remove front brake component part (retaining plates, drive plates and driven plate) from transmission case by using a wire (A) with its tip bent like a hook.
    GNSJPDIA1115Z-115Courtesy of NISSAN NORTH AMERICA, INC.
  15. Remove snap ring SYMBOL from transmission case using a flat-bladed screwdriver.
    GNSJPDIA1116Z-116Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • Be careful not to scratch transmission case and 1st one-way clutch.
    • Be careful not to damage snap ring.
  16. Remove input clutch assembly (with 1st one-way clutch, under drive carrier assembly, front brake hub, front carrier assembly, and rear internal gear) SYMBOL from transmission case.
    GNSJPDIA1117Z-117Courtesy of NISSAN NORTH AMERICA, INC.
  17. Remove 1st one-way clutch SYMBOL from front brake hub.
    GNSJPDIA1118Z-118Courtesy of NISSAN NORTH AMERICA, INC.
  18. Remove under drive carrier assembly (with front brake hub) SYMBOL from front carrier assembly.
    GNSJPDIA1119Z-119Courtesy of NISSAN NORTH AMERICA, INC.
  19. Remove needle bearing SYMBOL from front carrier assembly.
    GNSJPDIA1120Z-120Courtesy of NISSAN NORTH AMERICA, INC.
  20. Remove seal rings SYMBOL from input clutch assembly.
    GNSJPDIA1121Z-121Courtesy of NISSAN NORTH AMERICA, INC.
  21. Remove mid carrier assembly and rear carrier assembly as a unit.
    G04075780Courtesy of NISSAN NORTH AMERICA, INC.
  22. Remove mid carrier assembly from rear carrier assembly.
    G04075781Courtesy of NISSAN NORTH AMERICA, INC.
  23. Remove needle bearing (front side) from mid carrier assembly.
    G04075782Courtesy of NISSAN NORTH AMERICA, INC.
  24. Remove needle bearing (rear side) from mid carrier assembly.
    G04075783Courtesy of NISSAN NORTH AMERICA, INC.
  25. Remove bearing race from rear carrier assembly.
    G04075784Courtesy of NISSAN NORTH AMERICA, INC.
  26. Remove needle bearing from rear carrier assembly.
    G04075785Courtesy of NISSAN NORTH AMERICA, INC.
  27. Remove mid sun gear assembly, rear sun gear assembly, and high and low reverse clutch hub as a unit.
    G04075786Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Be careful to remove then with bearing race and needle bearing.
  28. Remove high and low reverse clutch assembly from direct clutch assembly.
    G04075787Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Make sure that needle bearing is installed to the high and low reverse clutch assembly edge surface.
  29. Remove direct clutch assembly from reverse brake.
    G04075788Courtesy of NISSAN NORTH AMERICA, INC.
  30. Remove needle bearing from drum support.
    G04075789Courtesy of NISSAN NORTH AMERICA, INC.
  31. Remove snap ring SYMBOL from joint connector SYMBOL .
    GNSJPDIA07Z-007Courtesy of NISSAN NORTH AMERICA, INC.
  32. Push joint connector SYMBOL .
    GNSJPDIA08Z-008Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Be careful not to damage connector.
  33. Remove oil pan mounting bolts (SYMBOL ).
    GNSJPDIA1073Z-073Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : Front
  34. Remove oil pan SYMBOL and oil pan gasket.
  35. Remove magnets SYMBOL from oil pan.
    GNSJPDIA09Z-009Courtesy of NISSAN NORTH AMERICA, INC.
  36. Disconnect output speed sensor connector SYMBOL .
    GNSJPDIA1104Z-104Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Be careful not to damage connector.
  37. Disengage terminal clips (SYMBOL ).
  38. Remove control valve & TCM mounting bolts and clip SYMBOL from the control valve & TCM.
    GNSJPDIA1105Z-105Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : Front

    Bolt symbol

    Length mm (in)

    Number of bolts

    SYMBOL

    43 (1.69)

    3

    SYMBOL

    40 (1.57)

    2

    SYMBOL

    54 (2.13)

    6

    SYMBOL

    50 (1.97)

    2

    SYMBOL *

    50 (1.97)

    1

    *: Reamer bolt

  39. Remove the control valve & TCM SYMBOL from transmission case.
    GNSJSDIA1823Z-823Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: When removing, never with the manual valve notch and manual plate height. Remove it vertically.
  40. Remove joint connector SYMBOL from the control valve & TCM using a flat-bladed screwdriver SYMBOL .
    GNSJSDIA1718Z-718Courtesy of NISSAN NORTH AMERICA, INC.
  41. Disconnect TCM connector SYMBOL .
    GNSJSDIA1813Z-813Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Be careful not to damage connector.
  42. Remove rear extension assembly (2WD) or adapter case assembly (AWD) according to the following procedures.
    1. 2WD 
      1. Remove tightening bolts for rear extension assembly and transmission case.
        GNSJSDIA5919Z-919Courtesy of NISSAN NORTH AMERICA, INC.

        SYMBOL

        : Bolt
      2. Tap rear extension assembly using a soft hammer.
        G04075808Courtesy of NISSAN NORTH AMERICA, INC.
        CAUTION: Be careful not to damage rear extension.
      3. Remove rear extension assembly from transmission case. (With needle bearing.)
        G04075809Courtesy of NISSAN NORTH AMERICA, INC.
      4. Remove bearing race from output shaft.
        G04075692Courtesy of NISSAN NORTH AMERICA, INC.
      5. Remove output shaft from transmission case by rotating left/right.
        G04075815Courtesy of NISSAN NORTH AMERICA, INC.
      6. Remove parking gear SYMBOL from output shaft SYMBOL .
        GNSJPDIA0029Z-029Courtesy of NISSAN NORTH AMERICA, INC.
      7. Remove seal rings SYMBOL from output shaft.
        GNSJPDIA0030Z-030Courtesy of NISSAN NORTH AMERICA, INC.
    2. AWD 
      1. Remove tightening bolts for adapter case assembly and transmission case.
        GNSJSDIA9110Z-110Courtesy of NISSAN NORTH AMERICA, INC.

        SYMBOL

        : Bracket

        SYMBOL

        : Bolt
      2. Tap adapter case assembly using a soft hammer.
        G04075811Courtesy of NISSAN NORTH AMERICA, INC.
        CAUTION: Be careful not to damage adapter case.
      3. Remove adapter case assembly from transmission case. (With needle bearing)
        G04075812Courtesy of NISSAN NORTH AMERICA, INC.
      4. Remove bearing race from output shaft.
        G04075692Courtesy of NISSAN NORTH AMERICA, INC.
      5. Remove output shaft from transmission case by rotating left/right.
        G04075815Courtesy of NISSAN NORTH AMERICA, INC.
      6. Remove gasket from transmission case.
        G04075813Courtesy of NISSAN NORTH AMERICA, INC.
      7. Remove parking gear SYMBOL from output shaft SYMBOL .
        GNSJPDIA0029Z-029Courtesy of NISSAN NORTH AMERICA, INC.
      8. Remove seal rings SYMBOL from output shaft.
        GNSJPDIA0030Z-030Courtesy of NISSAN NORTH AMERICA, INC.
  43. Remove needle bearing from transmission case.
    G04075818Courtesy of NISSAN NORTH AMERICA, INC.
  44. Remove output speed sensor SYMBOL from transmission case.
    GNSJSDIA1321Z-321Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : Bolt
    CAUTION:
    • Never subject it to impact by dropping or hitting it.
    • Never disassemble.
    • Never allow metal filings, etc. to get on the sensor's front edge magnetic area.
    • Never place in an area affected by magnetism.
  45. Remove reverse brake snap ring (fixing plate) with 2 flat-bladed screwdrivers.
    G04075820Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • Be careful not to scratch transmission case and reverse brake retaining plate.
    • Be careful not to damage snap ring.
    NOTE: Press out snap ring from the transmission case oil pan side gap with a flat-bladed screwdriver, and remove it using a another screwdriver.
  46. Remove reverse brake retaining plate from transmission case.
  47. Remove N-spring from transmission case.
    G04081861Courtesy of NISSAN NORTH AMERICA, INC.
  48. Remove reverse brake component part (drive plates, driven plates, and dish plates) from transmission case.
    G04075822Courtesy of NISSAN NORTH AMERICA, INC.
  49. Remove snap ring (fixing spring retainer) using a flat-bladed screwdriver.
    G04075823Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • Be careful not to scratch transmission case and spring retainer.
    • Be careful not to damage snap ring.
  50. Remove reverse brake spring retainer and reverse brake return spring from transmission case.
    G04075824Courtesy of NISSAN NORTH AMERICA, INC.
  51. Remove seal rings from drum support.
    G04075925Courtesy of NISSAN NORTH AMERICA, INC.
  52. Remove needle bearing from drum support edge surface.
    G04075924Courtesy of NISSAN NORTH AMERICA, INC.
  53. Remove reverse brake piston SYMBOL from transmission case with compressed air. Refer to Oil Channel .
    GNSJSDIA1819Z-819Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : Reverse brake pressure hole
    CAUTION: Care should be taken not to abruptly blow air. It makes pistons incline, as the result, it becomes hard to disassemble the pistons.
  54. Remove D-rings from reverse brake piston.
    G04121002Courtesy of NISSAN NORTH AMERICA, INC.
  55. Remove manual shaft retaining pin with pair of nippers.
    G04075830Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Be careful not to cut retaining pin.
  56. Remove manual plate SYMBOL from detent spring SYMBOL .
    GNSJPDIA1131Z-131Courtesy of NISSAN NORTH AMERICA, INC.
  57. Remove parking rod SYMBOL from manual plate.
  58. Install manual plate to detent spring.
  59. Use a pin punch [4 mm (0.16 in) dia. commercial service tool] to knock out retaining pin SYMBOL .
    GNSJPDIA1132Z-132Courtesy of NISSAN NORTH AMERICA, INC.
  60. Remove manual plate from manual shaft.
    G04075831Courtesy of NISSAN NORTH AMERICA, INC.
  61. Remove manual shaft from transmission case.
    G04075833Courtesy of NISSAN NORTH AMERICA, INC.
  62. Remove manual shaft oil seals using a flat-bladed screwdriver.
    G04075834Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Be careful not to scratch transmission case.
  63. Remove detent spring SYMBOL from transmission case.
    GNSJPDIA1134Z-134Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : Bolt
  64. Remove needle bearing SYMBOL from rear extension (2WD) or adapter case (AWD).
    G04120872Courtesy of NISSAN NORTH AMERICA, INC.
  65. Remove parking actuator support from rear extension (2WD) or adapter case (AWD).
    G04075696Courtesy of NISSAN NORTH AMERICA, INC.
  66. Remove parking pawl (with return spring) and pawl shaft from rear extension (2WD) or adapter case (AWD).
    G04075697Courtesy of NISSAN NORTH AMERICA, INC.
  67. Remove return spring SYMBOL from parking pawl SYMBOL .
    G04075844Courtesy of NISSAN NORTH AMERICA, INC.
  68. Remove rear oil seal from rear extension SYMBOL or adapter case SYMBOL using a flat-bladed screwdriver (A).
    GNSJSDIA0157Z-157Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : 2WD

    SYMBOL

    : AWD
    CAUTION: Be careful not to scratch rear extension or adapter case.
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