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Home >> Infiniti >> 2012 >> G37 IPL, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (Automatic Transmission) >> 7AT: Re7R01A >> Unit Disassembly And Assembly >> Transmission Assembly >> Disassembly

Transmission Assembly: Disassembly

WARNING: This page is about a different car, the 2011 Nissan 370Z. 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.
    Fig 1: Identifying Torque Converter
    G07100618Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Remove tightening bolts for converter housing and transmission case.
  4. Remove converter housing from transmission case.
    CAUTION: Be careful not to scratch converter housing.
    Fig 2: Identifying Converter Housing Bolts
    G07100619Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Remove O-ring from input clutch assembly.
    Fig 3: Identifying O-Ring
    G07100620Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Remove tightening bolts for oil pump assembly and transmission case.
    Fig 4: Locating Oil Pump Assembly Bolts
    G07100621Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Attach the sliding hammers (SST: ST25850000) (A) to oil pump assembly (1) and extract it evenly from transmission case.
    Fig 5: Attaching Sliding Hammers To Oil Pump Assembly
    G07100622Courtesy of NISSAN MOTOR CO., U.S.A.
    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 (1) from oil pump assembly.
    Fig 6: Identifying O-Ring
    G07100623Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove bearing race (1) from oil pump assembly.
    Fig 7: Identifying Bearing Race
    G07100624Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Remove seal ring (1) from oil pump assembly.
    Fig 8: Identifying Seal Ring
    G07100625Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove under drive sun gear (1) from under drive carrier assembly.
    Fig 9: Identifying Drive Sun Gear
    G07100626Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove needle bearing (1) from under drive sun gear.
    Fig 10: Removing Needle Bearing
    G07100627Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove needle bearing (1) from under drive carrier assembly.
    Fig 11: Identifying Needle Bearing
    G07100628Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Remove front brake retaining plates, front brake drive plates and front brake driven plates from transmission case by using a wire (A) with its tip bent like a hook.
    Fig 12: Removing Front Brake Retaining Plates
    G07100629Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Remove snap ring (1) from transmission case using a flat-bladed screwdriver.
    CAUTION:
    • Be careful not to scratch transmission case and 1st one-way clutch.
    • Be careful not to damage snap ring.
      Fig 13: Identifying Snap Ring
      G07100630Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Remove input clutch assembly (with 1st one-way clutch, under drive carrier assembly, front brake hub, front carrier assembly, and rear internal gear) (1) from transmission case.
    Fig 14: Identifying Rear Internal Gear
    G07100631Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Remove 1st one-way clutch (1) from front brake hub.
    Fig 15: Identifying 1St One-Way Clutch
    G07100632Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Remove under drive carrier assembly (with front brake hub) (1) from front carrier assembly.
    Fig 16: Identifying Front Brake Hub
    G07100633Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove needle bearing (1) from front carrier assembly.
    Fig 17: Identifying Needle Bearing
    G07100634Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Remove seal rings (1) from input clutch assembly.
    Fig 18: Identifying Seal Rings
    G07100635Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Remove mid carrier assembly and rear carrier assembly as a unit.
    Fig 19: Identifying Mid Carrier Assembly In Rear Carrier Assembly
    G07100636Courtesy of NISSAN MOTOR CO., U.S.A.
  22. Remove mid carrier assembly from rear carrier assembly.
    Fig 20: Identifying Mid Carrier Assembly
    G07100637Courtesy of NISSAN MOTOR CO., U.S.A.
  23. Remove needle bearing (front side) from mid carrier assembly.
    Fig 21: Identifying Needle Bearing
    G07100638Courtesy of NISSAN MOTOR CO., U.S.A.
  24. Remove needle bearing (rear side) from mid carrier assembly.
    Fig 22: Identifying Needle Bearing
    G07100639Courtesy of NISSAN MOTOR CO., U.S.A.
  25. Remove bearing race from rear carrier assembly.
    Fig 23: Identifying Bearing Race In Rear Carrier Assembly
    G07100640Courtesy of NISSAN MOTOR CO., U.S.A.
  26. Remove needle bearing from rear carrier assembly.
    Fig 24: Identifying Needle Bearing In Rear Carrier Assembly
    G07100641Courtesy of NISSAN MOTOR CO., U.S.A.
  27. 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 race and needle bearing.
    Fig 25: Identifying High And Low Reverse Clutch Hub
    G07100642Courtesy of NISSAN MOTOR CO., U.S.A.
  28. 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 26: Identifying High And Low Reverse Clutch Assembly
    G07100643Courtesy of NISSAN MOTOR CO., U.S.A.
  29. Remove direct clutch assembly from reverse brake.
    Fig 27: Identifying Direct Clutch Assembly
    G07100644Courtesy of NISSAN MOTOR CO., U.S.A.
  30. Remove needle bearing from drum support.
    Fig 28: Identifying Needle Bearing
    G07100645Courtesy of NISSAN MOTOR CO., U.S.A.
  31. Remove snap ring (1) from joint connector (A).
    Fig 29: Identifying Snap Ring
    G07100646Courtesy of NISSAN MOTOR CO., U.S.A.
  32. Push joint connector (A).
    CAUTION: Be careful not to damage connector.
    Fig 30: Identifying Joint Connector
    G07100647Courtesy of NISSAN MOTOR CO., U.S.A.
  33. Remove oil pan mounting bolts.
    Fig 31: Identifying Oil Pan Mounting Bolts
    G07100648Courtesy of NISSAN MOTOR CO., U.S.A.
  34. Remove oil pan (2) and oil pan gasket.
  35. Remove magnets (1) from oil pan.
    Fig 32: Identifying Magnets
    G07100649Courtesy of NISSAN MOTOR CO., U.S.A.
  36. Disconnect output speed sensor connector (A).
    CAUTION: Be careful not to damage connector.
  37. Disengage terminal clips.
    Fig 33: Identifying Terminal Clips
    G07100650Courtesy of NISSAN MOTOR CO., U.S.A.
  38. Remove control valve & TCM mounting bolts and clip (1) from the control valve & TCM.
    Fig 34: Identifying Control Valve & TCM Mounting Bolts And Clip
    G07100651Courtesy of NISSAN MOTOR CO., U.S.A.
    BOLT SPECIFICATION

    Bolt symbol Length mm (in) Number of bolts
    A 43 (1.69) 3
    B 40 (1.57) 2
    C 54 (2.13) 6
    D 50 (1.97) 2
    E(1) 50 (1.97) 1
    (1) Reamer bolt
  39. Remove the control valve & TCM (1) from transmission case.
    CAUTION: When removing, never with the manual valve notch and manual plate height. Remove it vertically.
    Fig 35: Identifying Control Valve & TCM
    G07100652Courtesy of NISSAN MOTOR CO., U.S.A.
  40. Remove joint connector (1) from the control valve & TCM using a flat-bladed screwdriver (A).
    Fig 36: Identifying Joint Connector
    G07100653Courtesy of NISSAN MOTOR CO., U.S.A.
  41. Disconnect TCM connector (A).
    CAUTION: Be careful not to damage connector.
    Fig 37: Identifying TCM Connector
    G07100654Courtesy of NISSAN MOTOR CO., U.S.A.
  42. Remove tightening bolts for rear extension assembly and transmission case.
    Fig 38: Identifying Rear Extension Assembly Bolts
    G07100655Courtesy of NISSAN MOTOR CO., U.S.A.
  43. Tap rear extension assembly using a soft hammer.
    CAUTION: Be careful not to damage adapter case.
    Fig 39: Tapping Rear Extension Assembly
    G07100656Courtesy of NISSAN MOTOR CO., U.S.A.
  44. Remove rear extension assembly from transmission case. (With needle bearing.)
    Fig 40: Identifying Rear Extension Assembly
    G07100657Courtesy of NISSAN MOTOR CO., U.S.A.
  45. Remove bearing race from output shaft.
    Fig 41: Identifying Bearing Race In Output Shaft
    G07100658Courtesy of NISSAN MOTOR CO., U.S.A.
  46. Remove output shaft from transmission case by rotating left/right.
    Fig 42: Identifying Output Shaft In Transmission Case
    G07100659Courtesy of NISSAN MOTOR CO., U.S.A.
  47. Remove parking gear (1) from output shaft (2).
    Fig 43: Removing Parking Gear
    G07100660Courtesy of NISSAN MOTOR CO., U.S.A.
  48. Remove seal rings (1) from output shaft.
    Fig 44: Removing Seal Rings
    G07100661Courtesy of NISSAN MOTOR CO., U.S.A.
  49. Remove needle bearing from transmission case.
    Fig 45: Identifying Needle Bearing
    G07100662Courtesy of NISSAN MOTOR CO., U.S.A.
  50. Remove output speed sensor (1) from transmission case.
    Fig 46: Removing Output Speed Sensor
    G07100663Courtesy of NISSAN MOTOR CO., U.S.A.
    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.
  51. Remove reverse brake snap ring (fixing plate) with 2 flat-bladed screwdrivers.
    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.
  52. Remove reverse brake retaining plate from transmission case.
    Fig 47: Identifying Reverse Brake Retaining Plate
    G07100664Courtesy of NISSAN MOTOR CO., U.S.A.
  53. Remove N-spring from transmission case.
    Fig 48: Identifying N-Spring
    G07100665Courtesy of NISSAN MOTOR CO., U.S.A.
  54. Remove reverse brake drive plates, driven plates, dish plates, and retaining plate transmission case.
    Fig 49: Identifying Reverse Brake Drive Plates
    G07100666Courtesy of NISSAN MOTOR CO., U.S.A.
  55. Remove snap ring (fixing spring retainer) using a flat-bladed screwdriver.
    CAUTION:
    • Be careful not to scratch transmission case and spring retainer.
    • Be careful not to damage snap ring.
      Fig 50: Identifying Snap Ring
      G07100667Courtesy of NISSAN MOTOR CO., U.S.A.
  56. Remove reverse brake spring retainer and reverse brake return spring from transmission case.
    Fig 51: Identifying Spring Retainer And Return Spring
    G07100668Courtesy of NISSAN MOTOR CO., U.S.A.
  57. Remove seal rings from drum support.
    Fig 52: Identifying Seal Rings
    G07100669Courtesy of NISSAN MOTOR CO., U.S.A.
  58. Remove needle bearing from drum support edge surface.
    Fig 53: Identifying Needle Bearing
    G07100670Courtesy of NISSAN MOTOR CO., U.S.A.
  59. Remove reverse brake piston (1) from transmission case with compressed air. Refer to "OIL CHANNEL ".
    Fig 54: Removing Reverse Brake Piston
    G07100671Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION: Care should be taken not to abruptly blow air. It makes pistons incline, as the result, it becomes hard to disassemble the pistons.
  60. Remove D-rings from reverse brake piston.
    Fig 55: Identifying D-Rings In Reverse Brake Piston
    G07100672Courtesy of NISSAN MOTOR CO., U.S.A.
  61. Remove manual shaft retaining pin with pair of nippers.
    CAUTION: Be careful not to cut retaining pin.
    Fig 56: Identifying Manual Shaft Retaining Pin
    G07100673Courtesy of NISSAN MOTOR CO., U.S.A.
  62. Remove manual plate (1) from detent spring (2).
  63. Remove parking rod (3) from manual plate.
  64. Install manual plate to detent spring.
    Fig 57: Identifying Manual Plate
    G07100674Courtesy of NISSAN MOTOR CO., U.S.A.
  65. Use a pin punch [4 mm (0.16 in) dia. commercial service tool] to knock out retaining pin (1).
    Fig 58: Identifying Retaining Pin
    G07100675Courtesy of NISSAN MOTOR CO., U.S.A.
  66. Remove manual plate from manual shaft.
    Fig 59: Identifying Manual Plate
    G07100676Courtesy of NISSAN MOTOR CO., U.S.A.
  67. Remove manual shaft from transmission case.
    Fig 60: Identifying Manual Shaft
    G07100677Courtesy of NISSAN MOTOR CO., U.S.A.
  68. Remove manual shaft oil seals using a flat-bladed screwdriver.
    CAUTION: Be careful not to scratch transmission case.
    Fig 61: Identifying Manual Shaft Oil Seals
    G07100678Courtesy of NISSAN MOTOR CO., U.S.A.
  69. Remove detent spring (1) from transmission case.
    Fig 62: Identifying Detent Spring
    G07100679Courtesy of NISSAN MOTOR CO., U.S.A.
  70. Remove needle bearing (1) from rear extension.
    Fig 63: Identifying Needle Bearing
    G07100680Courtesy of NISSAN MOTOR CO., U.S.A.
  71. Remove parking actuator support from rear extension.
    Fig 64: Identifying Parking Actuator Support
    G07100681Courtesy of NISSAN MOTOR CO., U.S.A.
  72. Remove parking pawl (with return spring) and pawl shaft from rear extension.
    Fig 65: Identifying Parking Pawl And Pawl Shaft
    G07100682Courtesy of NISSAN MOTOR CO., U.S.A.
  73. Remove return spring (1) from parking pawl (2).
    Fig 66: Identifying Return Spring And Parking Pawl
    G07100683Courtesy of NISSAN MOTOR CO., U.S.A.
  74. Remove rear oil seal from rear extension using a flat-bladed screwdriver.
    CAUTION: Be careful not to scratch adapter case.
    Fig 67: Identifying Rear Oil Seal
    G07100684Courtesy of NISSAN MOTOR CO., U.S.A.