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Home >> Tesla >> 2017 >> Model 3 Base >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Electric Motor Systems >> Rear Drive Unit -- Model 3 >> Rear Drive Unit Assembly >> Drive Unit - Rear - (3DU) Remove and Install >> Remove

Drive Unit - Rear - (3DU) Remove and Install: Remove

  1. Remove the rear subframe assembly. See SUBFRAME ASSEMBLY - REAR (REMOVE AND INSTALL) .
  2. Disconnect the electrical harness from the inverter low voltage connector.
    CAUTION: Move the low voltage connector away from the coolant manifold to prevent that coolant is spilled onto the connector during inverter removal.
    G14750254Courtesy of TESLA, INC.
  3. Release the clip that attaches the low voltage electrical harness to the inverter.
    G14750255Courtesy of TESLA, INC.
  4. Release the clip, disconnect the rear drive unit inlet hose from the inverter coolant inlet, and then plug the inlet.
    G14750256Courtesy of TESLA, INC.
  5. Release the clip that attaches the rear drive unit inlet hose to the HV harness bracket, and then remove the hose from the rear drive unit.
    G14750257Courtesy of TESLA, INC.
  6. Remove the bolt that attaches the HV harness bracket to the inverter.
    G14750258Courtesy of TESLA, INC.
  7. Slide the release to unlock the rear drive unit HV connector handle of the rear drive unit to HV battery harness from the secured position.
    G14750259Courtesy of TESLA, INC.
  8. Fully raise the handle on the rear drive unit HV connector.
    G14750260Courtesy of TESLA, INC.
  9. Remove the rear drive unit HV connector from the rear drive unit HV header.
  10. Release the clip that attaches the LH rear ABS wheel speed sensor connector to the subframe, and then disconnect the subframe harness from the connector.

    Tip: Use a mechanical pickup tool to hold the connector in place, and then release the connector clip with a screwdriver.

    G14750261Courtesy of TESLA, INC.
  11. Release the clip and remove the grommet that attach the rear LH ABS wheel speed sensor cable to the rear knuckle and bracket.
    G14750262Courtesy of TESLA, INC.
  12. Remove and discard the bolt that attaches the rear LH ABS wheel speed sensor to the knuckle, and then remove the sensor from the knuckle.
    G14750263Courtesy of TESLA, INC.
  13. Remove and discard the nut, and then remove the washer that attach the LH halfshaft to the hub assembly.
    G14750264Courtesy of TESLA, INC.
  14. Remove the bolt that attaches the LH rear brake rotor to the hub.
    G14750265Courtesy of TESLA, INC.
    NOTE: Remove the lug nut previously installed for early production vehicles.
  15. Install the hub puller onto the LH rear rotor, and then install and hand-tighten the puller washers (x5) and the lug nuts (x5) onto the rotor studs.
  16. Use the hub puller to free the LH rear halfshaft from the hub splines.
    NOTE: The LH rear halfshaft is removed in a later step.
  17. Remove the lug nuts (x5) and the puller washers (x5) from the LH rear rotor studs, and then remove the hub puller from the rotor.
  18. Install the bolt that attaches the LH brake rotor to the hub.

    5 N.m (3.7 ft-lbs) 

    G14750266Courtesy of TESLA, INC.
    NOTE: Reinstall the lug nut previously installed for early production vehicles.
  19. Remove the bolt and nut that attach the LH upper aft link to the knuckle.
    G14750267Courtesy of TESLA, INC.
  20. Remove the bolt and nut that attach the LH upper fore link to the knuckle.
    G14750268Courtesy of TESLA, INC.
  21. Remove the bolt and nut that attach the LH rear toe link to the knuckle.
    G14750269Courtesy of TESLA, INC.
  22. Remove the LH rear halfshaft from the knuckle and hub assembly.
  23. Position the axle remover cable around the inner joint of the LH rear drive unit halfshaft, and then use a cable tie to hold the axle remover cable in position.
    NOTE: Axle removed from drive unit for demonstration purposes
    G14750270Courtesy of TESLA, INC.
  24. Hook the axle remover slide hammer on the 2 axle remover cable loops, and then use the slide hammer to release the halfshaft from the drive unit.
  25. With assistance, remove the LH rear drive unit halfshaft from the rear drive unit, and then install a halfshaft plug into the opening of the gearbox.
  26. Repeat step  10 through step  25 on the RH side of the rear drive unit.
  27. Disconnect the electrical harness from the resolver connector.
    G14750271Courtesy of TESLA, INC.
  28. Disconnect the electrical harness from the oil pump connector.
    G14750272Courtesy of TESLA, INC.
  29. Attach the drive unit sling tool to the rear drive unit.
  30. Position the drive unit stand underneath the gantry.
  31. Attach the drive unit sling tool to the gantry.
  32. Raise the sling tool so that there is a slight tension on the cables.
  33. Remove the bolt and nut that attach the LH mount of the rear drive unit to the rear subframe.
    G14750273Courtesy of TESLA, INC.
    G14750274Courtesy of TESLA, INC.
  34. Remove the bolt and nut that attach the RH bushing of the rear drive unit to the rear subframe.
    G14750275Courtesy of TESLA, INC.
    G14750276Courtesy of TESLA, INC.
  35. Remove the bolt and nut that attach the rear bushing of the rear drive unit to the rear subframe.
    G14750277Courtesy of TESLA, INC.
  36. Raise the drive unit sling tool to lift the rear drive unit out of the rear subframe.
  37. Lower the rear drive unit into an empty crate or pallet.
  38. Remove the drive unit sling tool from the rear drive unit.
    G14750278Courtesy of TESLA, INC.
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