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Home >> Nissan-Datsun >> 2004 >> Frontier Base, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - RL4R01A >> Overhaul >> Disassembly

Automatic Transmission - RL4R01A: Overhaul: Disassembly

  1. Removing torque converter by holding it firmly and turning while pulling straight out.
    Fig 1: Removing Torque Converter By Holding
    G00770533Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Check torque converter one-way clutch.
    1. Insert Tool into spline of one-way clutch inner race.
    2. Hook bearing support unitized with one-way clutch outer race with suitable wire.
    3. Check that one-way clutch inner race rotates only clockwise with Tool while holding bearing support with wire.
    Fig 2: Inserting Tool Into Spline Of One-Way Clutch Inner Race
    G00770534Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Remove PNP switch from transmission case.
    Fig 3: Removing PNP Switch From Transmission Case
    G00770535Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Separate the oil pan and transmission case.
    1. Drain ATF from drain plug.
    2. Raise oil pan by placing wooden blocks under converter housing and adapter case.
    3. Remove oil pan and gasket.
      • Always place oil pan straight down so that foreign particles inside will not move. 
      • Always replace oil pan bolts as they are self-sealing bolts. 
    Fig 4: Removing Oil Pan And Gasket
    G00770536Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Check foreign materials in oil pan to help determine cause 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 buildup. Varnish can cause valves, servo, and clutches to stick and may inhibit pump pressure.
    • If frictional material is detected, replace radiator after repair of A/T.  Refer to RADIATOR .
    Fig 5: Identifying Fluid In Oil Pan
    G00770537Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Place transmission into Tool with the control valve facing up.
    Fig 6: Placing Transmission Into Tool With Control Valve Facing Up
    G00770538Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Remove torque converter clutch solenoid valve and overdrive cancel solenoid valve connectors.
    Fig 7: Removing Torque Converter Clutch Solenoid Valve And Overdrive Cancel Solenoid Valve Connectors
    G00770539Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Remove oil strainer.
    Fig 8: Removing Oil Strainer
    G00770540Courtesy of NISSAN MOTOR CO., U.S.A.
    1. Remove oil strainer from control valve assembly.

      Then remove O-ring from oil strainer.

    2. Check oil strainer screen for damage.
    Fig 9: Checking Oil Strainer Screen
    G00770541Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove control valve assembly.
    1. Straighten terminal clips to free terminal cords, then remove terminal clips.
      Fig 10: Removing Terminal Clips
      G00770542Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove bolts A  and B  , and remove control valve assembly from transmission.
      Fig 11: Bolts Specifications Chart
      G00770543Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 12: Removing Control Valve Assembly From Transmission
      G00770544Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove manual valve from control valve assembly.
  10. Remove terminal cord assembly from transmission case while pushing on stopper.
    • Be careful not to damage cord. 
    • Do not remove terminal cord assembly unless it is damaged. 
    Fig 13: Removing Terminal Cord Assembly From Transmission Case
    G00770545Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove converter housing.
    1. Remove converter housing bolts.
    2. Remove traces of sealant.
      • Be careful not to scratch converter housing. 
    Fig 14: Removing Converter Housing Bolts
    G00770546Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove O-ring from input shaft.
    Fig 15: Removing O-Ring From Input Shaft
    G00770547Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove oil pump assembly.
    1. Attach Tool to oil pump assembly and extract it evenly from transmission case.
      Fig 16: Attaching Tool To Oil Pump Assembly
      G00770548Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove O-ring from oil pump assembly.
    3. Remove traces of sealant from oil pump housing.
      • Be careful not to scratch pump housing. 
      Fig 17: Removing O-Ring From Oil Pump Assembly
      G00770549Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove needle bearing and thrust washer from oil pump assembly.
    Fig 18: Removing Needle Bearing And Thrust Washer From Oil Pump Assembly
    G00770550Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Remove input shaft and oil pump gasket.
    Fig 19: Removing Input Shaft And Oil Pump Gasket
    G00770551Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Remove brake band and band strut.
    1. Loosen lock nut and remove band servo anchor end pin from transmission case.
      Fig 20: Removing Band Servo Anchor End Pin From Transmission Case
      G00770552Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove brake band and band strut from transmission case.
      Fig 21: Removing Brake Band And Band Strut From Transmission Case
      G00770553Courtesy 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 Fig 22. Leave the clip in position after removing the brake band.
      Fig 22: Checking Brake Band Facing
      G00770554Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check brake band facing for damage, cracks, wear and burns.
  16. Remove front side clutch and gear components.
    1. Remove clutch pack (reverse clutch, high clutch and front sun gear) from transmission case.
      Fig 23: Removing Front Side Clutch And Gear Components
      G00770555Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove front bearing race from clutch pack.
      Fig 24: Removing Front Bearing Race From Clutch Pack
      G00770556Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove rear bearing race from clutch pack.
    4. Remove front planetary carrier from transmission case.
      Fig 25: Removing Front Planetary Carrier From Transmission Case
      G00770557Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Remove front needle bearing from front planetary carrier.
    6. Remove rear bearing from front planetary carrier.
      Fig 26: Removing Rear Bearing From Front Planetary Carrier
      G00770558Courtesy of NISSAN MOTOR CO., U.S.A.
    7. Remove rear sun gear from transmission case.
    Fig 27: Removing Rear Sun Gear From Transmission Case
    G00770559Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Remove rear extension case.
    1. Remove rear extension case from transmission case.
    2. Remove rear extension gasket from transmission case.
      Fig 28: Removing Rear Extension Gasket From Transmission Case
      G00770560Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove oil seal from rear extension case.
      • Do not remove oil seal unless it is to be replaced. 
    Fig 29: Removing Oil Seal From Rear Extension Case
    G00770561Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Remove output shaft and parking gear.
    1. Remove governor valve assembly.
      Fig 30: Removing Governor Valve Assembly
      G00770562Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove rear snap ring from output shaft.
      Fig 31: Removing Rear Snap Ring From Output Shaft
      G00770563Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Slowly push output shaft all the way forward.
      • Do not use excessive force. 
      Fig 32: Removing Snap Ring From Output Shaft
      G00770564Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove snap ring from output shaft.
    5. Remove output shaft and parking gear as a unit from transmission case.
      Fig 33: Removing Output Shaft And Parking Gear
      G00770565Courtesy of NISSAN MOTOR CO., U.S.A.
    6. Remove parking gear from output shaft.
    7. Remove needle bearing from transmission case.
    Fig 34: Removing Needle Bearing From Transmission Case
    G00770566Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove rear side clutch and gear components.
    1. Remove front internal gear
      Fig 35: Removing Front Internal Gear
      G00770567Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove bearing race from front internal gear.
      Fig 36: Removing Bearing Race From Front Internal Gear
      G00770568Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove needle bearing from rear internal gear.
      Fig 37: Removing Needle Bearing From Rear Internal Gear
      G00770569Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Remove rear internal gear, forward clutch hub and overrun clutch hub as a set from transmission case.
      Fig 38: Removing Rear Internal Gear, Forward Clutch Hub And Overrun Clutch Hub
      G00770570Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Remove needle bearing from overrun clutch hub.
    6. Remove overrun clutch hub from rear internal gear and forward clutch hub.
      Fig 39: Removing Overrun Clutch Hub From Rear Internal Gear And Forward Clutch Hub
      G00770571Courtesy of NISSAN MOTOR CO., U.S.A.
    7. Remove thrust washer from overrun clutch hub.
      Fig 40: Removing Thrust Washer From Overrun Clutch Hub
      G00770572Courtesy of NISSAN MOTOR CO., U.S.A.
    8. Remove forward clutch assembly from transmission case.
    Fig 41: Removing Forward Clutch Assembly From Transmission Case
    G00770573Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Remove band servo and accumulator components.
    1. Remove band servo retainer from transmission case.
      Fig 42: Removing Band Servo Retainer From Transmission Case
      G00770574Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Apply compressed air to oil hole until band servo piston comes out of transmission case.
      • Hold piston with a rag and gradually direct air to oil hole. 
      Fig 43: Applying Compressed Air To Oil Hole
      G00770575Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove return springs.
    4. Remove springs from accumulator pistons A, B, C  and D. 
    5. Apply compressed air to each oil hole until piston comes out.
      • Hold piston with a rag and gradually direct air to oil hole. 
      Fig 44: Removing Springs From Accumulator Pistons
      G00770576Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 45: Accumulator Pistons Chart
      G00770577Courtesy of NISSAN MOTOR CO., U.S.A.
    6. Remove O-ring from each piston.
    Fig 46: Removing O-Ring From Each Piston
    G00770578Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Remove throttle wire components if necessary.
    1. Remove throttle wire from A/T assembly.
      Fig 47: Removing Throttle Wire From A/T Assembly
      G00770579Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove throttle lever shaft E-ring.
      Fig 48: Removing Throttle Lever Shaft E-Ring
      G00770580Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Remove return spring.
    4. Remove throttle lever.
    5. Remove throttle lever shaft retaining pin and throttle lever shaft.
    Fig 49: Removing Throttle Lever Shaft Retaining Pin And Throttle Lever Shaft
    G00770581Courtesy of NISSAN MOTOR CO., U.S.A.
  22. Remove manual shaft components, if necessary.
  1. Hold width across flats of manual shaft (outside the transmission case) and remove lock nut from shaft.
    Fig 50: Removing Lock Nut From Shaft
    G00770582Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Remove retaining pin from transmission case.
    Fig 51: Removing Retaining Pin From Transmission Case
    G00770583Courtesy of NISSAN MOTOR CO., U.S.A.
  3. While pushing detent spring down, remove manual plate and parking rod from transmission case.
    Fig 52: Removing Manual Plate And Parking Rod From Transmission Case
    G00770584Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Remove manual shaft from transmission case.
    Fig 53: Removing Manual Shaft From Transmission Case
    G00770585Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Remove spacer and detent spring from transmission case.
    Fig 54: Removing Spacer And Detent Spring From Transmission Case
    G00770586Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Remove oil seal from transmission case.
Fig 55: Removing Oil Seal From Transmission Case
G00770587Courtesy of NISSAN MOTOR CO., U.S.A.
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