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Home >> Nissan-Datsun >> 2002 >> Altima SE, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle >> Disassembly >> Disassembly

Automatic Transaxle: Disassembly: Disassembly

  1. Drain ATF through drain plug.
  2. Remove torque converter.
    Fig 1: Removing Torque Converter
    G01982510Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Check torque converter one-way clutch using check tool as shown at left.
    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: Inserting Check Tool Into Groove Of Bearing Support Built Into One-Way Clutch Outer Race
      G01982511Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Remove A/T fluid charging pipe and fluid cooler tube.
    Fig 3: Removing A/T Fluid Charging Pipe And Fluid Cooler Tube
    G01982512Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Set manual shaft to position P.
  6. Remove park/neutral position (PNP) switch.
    Fig 4: Setting Manual Shaft To Position P
    G01982513Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Remove oil pan using power tools, and oil pan gasket.
    • Do not reuse oil pan bolts  .
  8. Check foreign materials in oil pan to help determine causes of malfunction. If the 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.
  9. Remove control valve assembly according to the following procedures.
    1. Remove control valve assembly mounting bolts as shown in Fig 6.
      Fig 6: View Of Control Valve Assembly
      G01982515Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove snap ring from terminal body.
      Fig 7: Removing Snap Ring From Terminal Body
      G01982516Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Push terminal body into transmission case and draw out terminal cord assembly.
      Fig 8: Pushing Terminal Body Into Transmission Case And Draw Out Terminal Cord Assembly
      G01982517Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Remove manual valve from control valve assembly.
    Fig 9: Removing Manual Valve From Control Valve Assembly
    G01982518Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove return spring from servo release accumulator piston.
    Fig 10: Removing Return Spring From Servo Release Accumulator Piston
    G01982519Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove servo release accumulator piston with compressed air.
    Fig 11: Removing Servo Release Accumulator Piston With Compressed Air
    G01982520Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove O-rings from servo release accumulator piston.
  14. Remove N-D accumulator piston and return spring with compressed air.
    Fig 12: Removing O-Rings From Servo Release Accumulator Piston
    G01982521Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Remove O-rings from N-D accumulator piston.
  16. Check accumulator pistons and contact surface of transmission case for damage.
    Fig 13: Checking Accumulator Pistons And Contact Surface Of Transmission Case For Damage
    G01982522Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Check accumulator return springs for damage and free length.
  18. Remove lip seals.
    Fig 14: Removing Lip Seals
    G01982523Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove L & R oil tube and oil sleeve.
    Fig 15: Removing L & R Oil Tube And Oil Sleeve
    G01982524Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Remove converter housing according to the following procedures.
    1. Remove converter housing mounting bolts using power tools.
    2. Remove converter housing by tapping it lightly.
      Fig 16: Removing Converter Housing Mounting Bolts
      G01982525Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove O-ring from differential oil port.
      Fig 17: Removing O-Ring From Differential Oil Port
      G01982526Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Remove final drive assembly from transmission case.
    Fig 18: Removing Final Drive Assembly From Transmission Case
    G01982527Courtesy of NISSAN MOTOR CO., U.S.A.
  22. Remove differential side bearing outer race and side bearing adjusting shim from transmission case.
    Fig 19: Removing Differential Side Bearing Outer Race And Side Bearing Adjusting Shim From Transmission Case
    G01982528Courtesy of NISSAN MOTOR CO., U.S.A.
  23. Remove differential side bearing adjusting shim from transmission case.
    Fig 20: Removing Differential Side Bearing Adjusting Shim From Transmission Case
    G01982529Courtesy of NISSAN MOTOR CO., U.S.A.
  24. Remove differential side bearing outer race from converter housing.
    Fig 21: Removing Differential Side Bearing Outer Race From Converter Housing
    G01982530Courtesy of NISSAN MOTOR CO., U.S.A.
  25. Remove oil seal with screwdriver from converter housing.
    • Be careful not to damage case. 
      Fig 22: Removing Oil Seal With Screwdriver From Converter Housing
      G01982531Courtesy of NISSAN MOTOR CO., U.S.A.
  26. Remove differential lubricant tube from converter housing.
    Fig 23: Removing Differential Lubricant Tube From Converter Housing
    G01982532Courtesy of NISSAN MOTOR CO., U.S.A.
  27. Remove oil pump according to the following procedures.
    1. Remove O-ring from input shaft.
      Fig 24: Removing O-Ring From Input Shaft
      G01982533Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove oil pump assembly, baffle plate and gasket from transmission case.
      Fig 25: Removing Oil Pump Assembly, Baffle Plate And Gasket From Transmission Case
      G01982534Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove thrust washer and bearing race from oil pump assembly.
      Fig 26: Removing Thrust Washer And Bearing Race From Oil Pump Assembly
      G01982535Courtesy of NISSAN MOTOR CO., U.S.A.
  28. Remove brake band according to the following procedures.
    1. Loosen lock nut, then back off anchor end pin.
      • Do not reuse anchor end pin. 
        Fig 27: Loosening Lock Nut, Then Back Off Anchor End Pin
        G01982536Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove brake band and strut from transmission case.
      Fig 28: Removing Brake Band And Strut From Transmission Case
      G01982537Courtesy 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. 

        Fig 29: Leaving Clip In Position After Removing Brake Band
        G01982538Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check brake band facing for damage, cracks, wear or burns.
      Fig 30: Checking Brake Band Facing For Damage, Cracks, Wear Or Burns
      G01982539Courtesy of NISSAN MOTOR CO., U.S.A.
  29. Remove input shaft assembly (high clutch) and reverse clutch according to the following procedures.
    1. Remove input shaft assembly (high clutch) with reverse clutch.
      Fig 31: Removing Input Shaft Assembly (High Clutch) With Reverse Clutch
      G01982540Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove input shaft assembly (high clutch) from reverse clutch.
      Fig 32: Removing Input Shaft Assembly (High Clutch) From Reverse Clutch
      G01982541Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove needle bearings from high clutch drum and check for damage or wear.
      Fig 33: Removing Needle Bearings From High Clutch Drum And Check For Damage Or Wear
      G01982542Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove high clutch hub and front sun gear from transmission case.
      Fig 34: Removing High Clutch Hub And Front Sun Gear From Transmission Case
      G01982543Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Remove front sun gear and needle bearing from high clutch hub and check for damage or wear.
    6. Remove bearing race from front sun gear and check for damage or wear.
      Fig 35: Removing Bearing Race From Front Sun Gear
      G01982544Courtesy of NISSAN MOTOR CO., U.S.A.
  30. Remove needle bearing from transmission case and check for damage or wear.
    Fig 36: Removing needle bearing from transmission case
    G01982545Courtesy of NISSAN MOTOR CO., U.S.A.
  31. Apply compressed air and check to see that low and reverse brake operates.
    Fig 37: Applying Compressed Air
    G01982546Courtesy of NISSAN MOTOR CO., U.S.A.
  32. Remove low one-way clutch and front planetary carrier assembly according to the following procedures.
    1. Remove snap ring with flat-bladed screwdriver.
      Fig 38: Removing Snap Ring With Flat-Bladed Screwdriver
      G01982547Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove low one-way clutch with a hook made of wire.
      Fig 39: Removing Low One-Way Clutch With Hook Made Of Wire
      G01982548Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove snap ring with flat-bladed screwdriver.
      Fig 40: Removing Snap Ring With Flat-Bladed Screwdriver
      G01982549Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove front planetary carrier with low and reverse brake piston and retainer.
      Fig 41: Removing Front Planetary Carrier With Low And Reverse Brake Piston And Retainer
      G01982550Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Remove low and reverse brake spring retainer.
      • Do not remove return springs from spring retainer. 
        Fig 42: Removing Low And Reverse Brake Spring Retainer
        G01982551Courtesy of NISSAN MOTOR CO., U.S.A.
    6. Check that low one-way clutch rotates in the direction of the clockwise arrow and locks in the opposite direction.
      Fig 43: Checking Low One-Way Clutch Rotates In Direction Of Clockwise
      G01982552Courtesy of NISSAN MOTOR CO., U.S.A.
    7. Remove needle bearing, low and reverse brake piston and retainer from front planetary carrier.
    8. Check front planetary carrier, low one-way clutch and needle bearing for damage or wear.
      Fig 44: Checking Front Planetary Carrier, Low One-Way Clutch And Needle Bearing For Damage Or Wear
      G01982553Courtesy of NISSAN MOTOR CO., U.S.A.
    9. Check clearance between planetary gears and planetary carrier with feeler gauge.

      Standard clearance: 0.20 - 0.70 mm (0.0079 - 0.0276 in) 

      Allowable limit: 0.80 mm (0.0315 in) 

      Replace front planetary carrier if the clearance exceeds allowable limit.

      Fig 45: Checking Clearance Between Planetary Gears And Planetary Carrier With Feeler Gauge
      G01982554Courtesy of NISSAN MOTOR CO., U.S.A.
  33. Remove rear planetary carrier assembly and rear sun gear according to the following procedures.
    1. Remove rear planetary carrier assembly from transmission case.
      Fig 46: Removing Rear Planetary Carrier Assembly From Transmission Case
      G01982555Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove rear sun gear from rear planetary carrier.
      Fig 47: Removing Rear Sun Gear From Rear Planetary Carrier
      G01982556Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove needle bearings from rear planetary carrier assembly.
    4. Check rear planetary carrier, rear sun gear and needle bearings for damage or wear.
      Fig 48: Checking Rear Planetary Carrier, Rear Sun Gear And Needle Bearings For Damage Or Wear
      G01982557Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Check clearance between pinion washer and rear planetary carrier with feeler gauge.

      Standard clearance: 0.20 - 0.70 mm (0.0079 - 0.0276 in) 

      Allowable limit: 0.80 mm (0.0315 in) 

      Replace rear planetary carrier if the clearance exceeds allowable limit.

      Fig 49: Checking Clearance Between Pinion Washer And Rear Planetary Carrier With Feeler Gauge
      G01982558Courtesy of NISSAN MOTOR CO., U.S.A.
  34. Remove rear internal gear and forward clutch hub from transmission case.
    Fig 50: Removing Rear Internal Gear And Forward Clutch Hub From Transmission Case
    G01982559Courtesy of NISSAN MOTOR CO., U.S.A.
  35. Remove overrun clutch hub from transmission case.
    Fig 51: Removing Overrun Clutch Hub From Transmission Case
    G01982560Courtesy of NISSAN MOTOR CO., U.S.A.
  36. Remove needle bearing from overrun clutch hub and check for damage or wear.
    Fig 52: Removing Needle Bearing From Overrun Clutch Hub And Checking For Damage Or Wear
    G01982561Courtesy of NISSAN MOTOR CO., U.S.A.
  37. Remove forward clutch assembly from transmission case.
    Fig 53: Removing Forward Clutch Assembly From Transmission Case
    G01982562Courtesy of NISSAN MOTOR CO., U.S.A.
  38. Remove needle bearing from transmission case.
    Fig 54: Removing Needle Bearing From Transmission Case
    G01982563Courtesy of NISSAN MOTOR CO., U.S.A.
  39. Remove output shaft assembly according to the following procedures.
    1. Remove side cover bolts.
      • Do not mix bolts A and B. 
      • Always replace bolts A as they are self-sealing bolts. 
        Fig 55: Removing Side Cover Bolts
        G01982564Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove side cover by lightly tapping it with a soft hammer.
      • Be careful not to drop output shaft assembly. It might come out when removing side cover. 
        Fig 56: Removing Side Cover By Lightly Tapping It With Soft Hammer
        G01982565Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove adjusting shim.
      Fig 57: Removing Adjusting Shim
      G01982566Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove output shaft assembly.
      Fig 58: Removing Output Shaft Assembly
      G01982567Courtesy of NISSAN MOTOR CO., U.S.A.
      • If output shaft assembly came off with side cover, tap cover with a soft hammer to separate.
        Fig 59: Removing Output Shaft Assembly
        G01982568Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Remove needle bearing.
      Fig 60: Removing Needle Bearing
      G01982569Courtesy of NISSAN MOTOR CO., U.S.A.
  40. Disassemble reduction pinion gear according to the following procedures.
    1. Set manual shaft to position P to fix idler gear.
    2. Unlock idler gear lock nut using a pin punch.
      Fig 61: Setting Manual Shaft To Position P To Fix Idler Gear
      G01982570Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove idler gear lock nut.
      • Do not reuse idler gear lock nut. 
        Fig 62: Removing Idler Gear Lock Nut
        G01982571Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove idler gear with puller.
      Fig 63: Removing Idler Gear With Puller
      G01982572Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Remove reduction pinion gear.
    6. Remove adjusting shim from reduction pinion gear.
      Fig 64: Removing Adjusting Shim From Reduction Pinion Gear
      G01982573Courtesy of NISSAN MOTOR CO., U.S.A.
  41. Remove return spring from parking shaft with screwdriver.
  42. Draw out parking shaft and remove parking pawl from transmission case.
  43. Check parking pawl and shaft for damage or wear.
    Fig 65: Checking Parking Pawl And Shaft For Damage Or Wear
    G01982574Courtesy of NISSAN MOTOR CO., U.S.A.
  44. Remove parking actuator support from transmission case.
  45. Check parking actuator support for damage or wear.
    Fig 66: Checking Parking Actuator Support For Damage Or Wear
    G01982575Courtesy of NISSAN MOTOR CO., U.S.A.
  46. Remove side oil seal with screwdriver from transmission case.
    Fig 67: Removing Side Oil Seal With Screwdriver From Transmission Case
    G01982576Courtesy of NISSAN MOTOR CO., U.S.A.