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Home >> Tesla >> 2014 >> Model S Base, AWD >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Electric Motor Systems >> Rear Drive Unit -- Model S >> Rear Drive Unit Assembly >> Drive Unit - Rear - Large - Remove And Install >> Removal

Drive Unit - Rear - Large - Remove And Install: Removal

  1. Remove the rear subframe assembly. See Large RDU .
    NOTE: Before continuing, move the subframe fixture to the gantry.
  2. Disconnect the motor encoder.
    G14982627Courtesy of TESLA, INC.
  3. Release the wheel speed sensor harnesses from the grommets on the subframe.
    G14982628Courtesy of TESLA, INC.
  4. On both sides of the subframe, release the bolt that secures the upper link to the knuckle (torque 140 N.m).
  5. On both sides of the subframe, release the bolt that secures the toe link to the knuckle (torque 130 N.m).
  6. 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.
    G14982629Courtesy of TESLA, INC.
  7. Hook the axle remover slide hammer on the 2 axle remover cable loops, and then use the slide hammer to remove the halfshaft from the drive unit.
  8. Repeat the previous 2 steps to remove the RH rear drive unit halfshaft.
  9. Attach the drive unit sling to the gantry, and then install the bolts (x3) that attach the sling to the drive unit.
    NOTE: Secure the short bolt to the motor section of the drive unit.
  10. Loosen the nuts that secure the front and rear motor mounts to the subframe (torque 90 N.m).
    G14982630Courtesy of TESLA, INC.
  11. Loosen the bolts (x3) that secure the motor to the side motor mount. (torque 22 N.m).

    Tip: It might be helpful to only use the gantry bolt that secures to the motor. This allows the drive unit to be rotated to better align the bolt holes.

    G14982631Courtesy of TESLA, INC.

    Tip: When removing the bolts that secure the front and rear motor mounts, it might be helpful to use a screwdriver or small prybar to pry against the subframe. This helps to align the bolt holes in the motor mounts with the subframe so that the bolts can be easily removed.

  12. Remove the bolt that secures the front motor mount (torque 90 N.m).
  13. Remove the bolt that secures the rear motor mount (torque 90 N.m).
    CAUTION: While lifting the drive unit assembly in the next step, have an assistant brace a screwdriver or similar tool against the subframe and hold the stabilizer bar out of the way. Do not brace the tool against the motor mount.
    G14982632Courtesy of TESLA, INC.
  14. Carefully lift the drive unit assembly, making sure to clear the rear of the subframe.
    CAUTION: Do not damage the motor encoder plastic housing.