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Home › Mazda › 2003 › B2300 Base, Automatic › Repair and Diagnosis › Transmission › Automatic Trans › Automatic Transmission - Service, Removal & Installation › Automatic Transmission Removal/Installation › Removal Note

Removal Note

NOTE:
  • If the transmission is to be removed for a period of time, support the engine with a safety stand and a wood block.
NOTE:
  • When the battery has been disconnected and reconnected, some abnormal drive symptoms can occur while the vehicle relearns its adaptive strategy. The customer needs to be notified that they may experience slightly different upshifts either soft or firm and this is a temporary condition and will eventually return to normal operating condition.
  1. Disconnect the negative battery cable.
  2. Place the selector lever in NEUTRAL position.
  3. Raise and support the vehicle.
  4. If transmission disassembly is required; drain the transmission fluid. See AUTOMATIC TRANSMISSION OIL PAN (GASKET & OIL STRAINER) REMOVAL/INSTALLATION 
  5. Vehicles equipped with 4WD, remove the transfer case. See REMOVAL & INSTALLATION - TRANSFER CASE .
  6. To maintain initial propeller shaft balance, mark the propeller shaft yoke and axle flange, so they may be installed in their original positions.
    Fig 1: Marking Propeller Shaft Yoke & Axle Flange
    G01924655Courtesy of MAZDA MOTORS CORP.
  7. Remove the four propeller shaft bolts.
  8. Remove the propeller shaft; See PROPELLER SHAFT REAR (4X2) REMOVAL/INSTALLATION or see PROPELLER SHAFT REAR (4X4) REMOVAL/INSTALLATION .
  9. Remove the starter motor; See STARTER MOTOR - 2.3L , STARTER MOTOR - 3.0L or STARTER MOTOR - 4.0L .
    10. NOTE:
    • On 2.3L engines, it may be necessary to gain access to the flexplate nuts through the wheel well.
    NOTE:
    • Mark the torque converter and the flexplate for proper alignment at reinstallation.
    Fig 2: Removing Torque Converter-To-Flexplate Nuts
    G01924656Courtesy of MAZDA MOTORS CORP.
  10. Remove the four torque converter to flexplate nuts.
    1. Rotate the crankshaft/flexplate assembly for access to all the torque converter nuts.
  11. Disconnect the shift cable.
    1. Disconnect the shift cable from the manual control lever.
    2. Disconnect the shift cable from the bracket.
    Fig 3: Disconnecting Shift Cable
    G01924657Courtesy of MAZDA MOTORS CORP.
  12. Remove the transmission wiring harness.
    1. Disconnect the Heated Oxygen Sensor (HO2S) connector.
    2. Disconnect the digital Transmission Range (TR) sensor connector.
    3. Disconnect the transmission connector.
    Fig 4: Removing Transmission Wiring Harness
    G01924658Courtesy of MAZDA MOTORS CORP.
  13. Remove the three-way catalytic converter; See THREE-WAY CATALYTIC CONVERTER REMOVAL/INSTALLATION - 2.3L for 2.3L engine, THREE-WAY CATALYTIC CONVERTER REMOVAL/INSTALLATION - 3.0L for 3.0L engine or THREE-WAY CATALYTIC CONVERTER REMOVAL/INSTALLATION - 4.0L for 4.0L engine.

    Remove the rear engine cover plate.

    Fig 5: Removing Rear Engine Cover Plate
    G01924659Courtesy of MAZDA MOTORS CORP.
    14. CAUTION:
    • Care should be taken not to damage the cooler lines.
    Fig 6: Disconnecting Transmission Cooler Lines
    G01924660Courtesy of MAZDA MOTORS CORP.
  14. Disconnect the transmission cooler lines; see AUTOMATIC TRANSMISSION COOLER TUBES REMOVAL/INSTALLATION  .
  15. Remove the transmission mount nuts.
    Fig 7: Removing Transmission Mount Nuts
    G01924661Courtesy of MAZDA MOTORS CORP.
    16. CAUTION:
    • Do not allow the transmission to hang freely.
  16. Position a jack under the transmission.
  17. Raise and support the transmission.
  18. Remove the transmission mount.
    1. Remove the transmission mount-to-extension housing bolts.
    2. Remove the transmission mount.
    Fig 8: Removing Transmission Mount
    G01924662Courtesy of MAZDA MOTORS CORP.
  19. Remove the crossmember.
    1. Remove the eight crossmember bolts (four each side).
    2. Remove the crossmember.
    Fig 9: Removing Crossmember
    G01924663Courtesy of MAZDA MOTORS CORP.
  20. Remove the transmission upper fill tube.
    1. Remove the bolt.
    2. Disconnect the transmission upper fill tube.
    Fig 10: Removing Transmission Upper Fill Tube
    G01924664Courtesy of MAZDA MOTORS CORP.
    21. NOTE:
    • Lower the jack to gain access to the transmission-to-engine bolts.
    Fig 11: Removing Lower Screws
    G01924665Courtesy of MAZDA MOTORS CORP.
  21. Remove the lower screws.
  22. Remove the HO2S connector bracket from the transmission.
    Fig 12: Removing HO2S Connector Bracket
    G01924666Courtesy of MAZDA MOTORS CORP.
  23. On 4x4 models remove the vent tube assembly.
    Fig 13: Remove The Vent Tube Assembly
    G01924667Courtesy of MAZDA MOTORS CORP.
  24. Remove the six transmission-to-engine bolts.
    Fig 14: Removing Transmission-To-Engine Bolts
    G01924668Courtesy of MAZDA MOTORS CORP.
    25. WARNING:
    • The torque converter is heavy and may result in injury if it falls out of the transmission. Secure the torque converter in the transmission.
    Fig 15: Installing Torque Converter Holding Tool
    G01924669Courtesy of MAZDA MOTORS CORP.
  25. Install the torque converter holding tool T979-7902-A or equivalent before lowering the transmission from the vehicle.
    26. WARNING:
    • Secure the transmission to the transmission jack with a safety chain.
  26. Lower the transmission.
  27. Perform Transmission Fluid Cooler Back Flushing/Cleaning; See AUTOMATIC TRANSMISSION POWER FLUSHING  .
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