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Section 240 (Automatic Transmission): Disassembly: Disassembly

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain ATF through drain plug.
  2. Remove torque converter.
    Fig 1: Removing Torque Converter
    G02161042Courtesy 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: Checking Torque Converter One-Way Clutch Using Check Tool
    G02161043Courtesy 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
    G02161044Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Set manual shaft to position P.
  6. Remove park/neutral position (PNP) switch.
    Fig 4: Identifying Park Neutral Position Switch, Control Cable And Manual Shaft
    G02161045Courtesy 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.
    • If frictional material is detected, replace radiator after repair of A/T. Refer to  RADIATOR  (with QR25DE), or  RADIATOR  (with VQ35DE). 
    Fig 5: Cleaning Oil Pan
    G02161046Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove control valve assembly according to the following procedures.
    1. Remove control valve assembly mounting bolts I, X  and bullet.
      Fig 6: Identifying Control Valve Assembly Mounting Bolts
      G02161047Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove snap ring from terminal body.
      Fig 7: Removing Snap Ring From Terminal Body
      G02161048Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Push terminal body into transmission case and draw out terminal cord assembly.
      Fig 8: Drawing Out Terminal Cord Assembly While Pushing Terminal Body Into Transmission Case
      G02161049Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Remove manual valve from control valve assembly.
    Fig 9: Removing Manual Valve From Control Valve Assembly
    G02161050Courtesy 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
    G02161051Courtesy 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
    G02161052Courtesy 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 N-D Accumulator Piston And Return Spring With Compressed Air
    G02161053Courtesy 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: Identifying Accumulator Pistons And Contact Surface Of Transmission Case For Damage
    G02161054Courtesy 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
    G02161055Courtesy 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
    G02161056Courtesy 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: Identifying Converter Housing Mounting Bolts
      G02161057Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove O-ring from differential oil port.
      Fig 17: Removing O-Ring From Differential Oil Port
      G02161058Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Remove final drive assembly from transmission case.
    Fig 18: Removing Final Drive Assembly From Transmission Case
    G02161059Courtesy 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
    G02161060Courtesy 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
    G02161061Courtesy 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
    G02161062Courtesy 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
    G02161063Courtesy of NISSAN MOTOR CO., U.S.A.
  26. Remove differential lubricant tube from converter housing.
    Fig 23: Removing Differential Lubricant Tube From Converter Housing
    G02161064Courtesy 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
      G02161065Courtesy 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
      G02161066Courtesy 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
      G02161067Courtesy 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
      G02161068Courtesy 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
      G02161069Courtesy 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: Securing Brake Band With Clip
      G02161070Courtesy 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
      G02161071Courtesy 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
      G02161072Courtesy 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
      G02161073Courtesy 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
      G02161074Courtesy 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
      G02161075Courtesy 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 Front Sun Gear, Needle Bearing And Bearing Race From High Clutch Hub
      G02161076Courtesy 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
    G02161077Courtesy 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 For Checking Operation Of Low And Reverse Brake
    G02161078Courtesy 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
      G02161079Courtesy 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
      G02161080Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove snap ring with flat-bladed screwdriver.
      Fig 40: Removing Snap Ring
      G02161081Courtesy 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
      G02161082Courtesy 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
      G02161083Courtesy 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: Identifying Lock And Unlock Direction Of Low One-Way Clutch
      G02161084Courtesy 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: Removing Needle Bearing, Low And Reverse Brake Piston And Retainer From Front Planetary Carrier
      G02161085Courtesy 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
      G02161086Courtesy 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
      G02161087Courtesy 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
      G02161088Courtesy 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: Removing Needle Bearings From Rear Planetary Carrier Assembly
      G02161089Courtesy 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
      G02161090Courtesy 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
    G02161091Courtesy of NISSAN MOTOR CO., U.S.A.
  35. Remove overrun clutch hub from transmission case.
    Fig 51: Removing Overrun Clutch Hub From Transmission Case
    G02161092Courtesy 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
    G02161093Courtesy of NISSAN MOTOR CO., U.S.A.
  37. Remove forward clutch assembly from transmission case.
    Fig 53: Removing Forward Clutch Assembly From Transmission Case
    G02161094Courtesy of NISSAN MOTOR CO., U.S.A.
  38. Remove needle bearing from transmission case.
    Fig 54: Removing Needle Bearing From Transmission Case
    G02161095Courtesy 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: Identifying Output Shaft Assembly Side Cover Bolts
      G02161096Courtesy 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
      G02161097Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove adjusting shim.
      Fig 57: Removing Adjusting Shim
      G02161098Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove output shaft assembly.
      Fig 58: Removing Output Shaft Assembly
      G02161099Courtesy 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: Separating Output Shaft Assembly From Side Cover
      G02161100Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Remove needle bearing.
      Fig 60: Removing Needle Bearing
      G02161101Courtesy 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: Unlocking Idler Gear Lock Nut Using Pin Punch
      G02161102Courtesy 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
      G02161103Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove idler gear with puller.
      Fig 63: Removing Idler Gear With Puller And Adjusting Shim From Reduction Pinion Gear
      G02161104Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Remove reduction pinion gear.
    6. Remove adjusting shim from reduction pinion gear.
  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 64: Removing Return Spring From Parking Shaft
    G02161105Courtesy 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 65: Removing Parking Actuator Support From Transmission Case
    G02161106Courtesy of NISSAN MOTOR CO., U.S.A.
  46. Remove side oil seal with screwdriver from transmission case.
    Fig 66: Removing Side Oil Seal With Screwdriver From Transmission Case
    G02161107Courtesy of NISSAN MOTOR CO., U.S.A.
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