Isuzu I-280, I-350 2005-06

Transmission Removal & Installation


  1. Before servicing the vehicle, refer to the Precautions Section.
  3. Drain the transmission fluid.
  5. Remove or disconnect the following:

    Negative battery cable
    Dipstick and filler tube
    Rear driveshaft
    Front driveshaft, if equipped with 4WD
    Transfer case, if equipped with 4WD
    Range selector cable from selector lever
    Transmission main harness connector
    Engine wiring harness retainers
    Park/neutral switch connector
    Vent hose retainer
    Fuel line bracket retainers and position fuel line aside
    Transmission service access plug
    3 bolts securing the torque converter to the flywheel
    Transmission cooler lines from the transmission. Plug the lines and the ports in the transmission.

  7. Place a transmission jack under the transmission.
  9. Remove the transmission crossmember.
  11. Inspect for any other wiring, brackets etc. which may interfere with the removal of the transmission.
  13. Remove the transmission from the engine by pulling the transmission rearward to disengage it from the locator dowel pins on the back of the block. Carefully lower the transmission from the vehicle. Use care that the torque converter does not fall out of the front of the transmission.
    Use converter holding strap tool No. J-21366, to secure the torque converter to the transmission during removal and installation procedures.

    Click image to see an enlarged view

    Fig. Install Special tool 21366 to secure the torque converter to the transmission-Automatic transmission


To install:

Installation is the reverse of removal, but please note the following important steps.

  1. Make sure the torque converter is fully seated in the pump drive. If not, the transmission will not fit tightly to the rear of the engine block.
  3. Raise the transmission into position and remove the torque converter holding strap and carefully. Slide the transmission forward until the dowel pins are engaged.
  5. The torque converter should be flush with the flywheel and turn freely by hand.
  7. Install the transmission-to-engine bolts. Tighten the bolts to 37 ft. lbs. (50 Nm).
  9. Tighten the torque converter-to-flywheel bolts to 44 ft. lbs. (60 Nm).
  11. Refill the transmission with the proper amount and type of fluid.
  13. Connect the negative battery cable. Start the vehicle and allow to warm while checking for leaks. Road test the vehicle to check for shift quality.