01/04/2024 14:05:03

Subframe Assembly - Rear (3DU) (Remove and Replace)

Correction code 30010202 5.04 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so.NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

  • 1099645-00-B Fixture, Subframe, Model 3
  • 1130279-00-A Lifting Sling, Drive Unit, Model 3 (NA, APAC)
  • 1130481-00-A Adapter, Subframe, Body Shop, Model 3
  • 1096075-00-A Tool, Hub Puller, Hydraulic
  • 1498673-00-A KIT, CABLE AXLE REMOVER, MS/MX/M3
  • 1140311-00-A Lever Lock, HV Connector, Model 3

Remove

  1. Remove the rear subframe assembly. See Subframe Assembly - Rear (3DU) (Remove and Install).
  2. Disconnect the electrical harness from the inverter low voltage connector.
  3. Release the clip that attaches the low voltage electrical harness to the inverter.
  4. Release the clip, disconnect the rear drive unit inlet hose from the inverter coolant coupling, and then plug the coupling.
  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.
  6. Remove the bolt that attaches the HV harness bracket to the inverter.
  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.
  8. Fully raise the handle on the rear drive unit HV connector.
  9. Remove the rear drive unit HV connector from the rear drive unit HV header.
  10. Remove the LH and RH coil springs from the rear lower aft links.
  11. 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.
  12. Release the clip and remove the grommet that attach the rear LH ABS wheel speed sensor cable to the rear LH knuckle and subframe bracket.
  13. 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.
  14. Remove and discard the nut, and remove the washer that attach the LH halfshaft to the hub assembly.
  15. Remove the bolt that attaches the LH rear brake rotor to the hub.
    Informational PurposesAn informational icon, calling your attention
    Note
    Remove the lug nut previously installed for early production vehicles.
  16. 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.
  17. Use the hub puller to free the LH rear halfshaft from the hub splines.
    Informational PurposesAn informational icon, calling your attention
    Note
    The halfshaft is removed at a later step.
  18. Remove the lug nuts (x5) and the lug nuts (x5) from the LH rear rotor studs, and then remove the hub puller from the rotor.
  19. Install the bolt that attaches the LH rear brake rotor to the hub.
    5 Nm (3.7 lbs-ft)
    Informational PurposesAn informational icon, calling your attention
    Note
    Reinstall the lug nut previously installed for early production vehicles.
  20. Remove the bolt and nut that attach the LH rear damper to the LH lower aft link, and then remove the damper from the rear subframe.
  21. Remove the bolt and nut that attach the LH lower aft link to the knuckle.
  22. Remove the bolt and nut that attach the LH lower fore link to the rear subframe.
  23. Remove the nut and bolt that attach the LH upper aft link to the rear subframe.
  24. Remove the nut and bolt that attach the LH toe link to the rear subframe.
  25. With an assistant, remove the bolt and nut that attach the LH upper fore link to the rear subframe.
    Informational PurposesAn informational icon, calling your attention
    Note
    With the help of an assistant, separate the knuckle assembly from the rear subframe.
  26. With an assistant, separate the LH halfshaft from the hub, and then remove the LH hub and knuckle assembly from the rear subframe.
  27. 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.
    Figure 1. Axle removed from drive unit for demonstration purposes
  28. 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.
  29. Install a halfshaft plug into the opening of the gearbox.
  30. Remove the nut and bolt that attach the LH lower control arm to the rear subframe, and then remove the control arm from the rear subframe.
  31. Repeat step 11 through step 30 for the RH side of the rear subframe.
  32. Release the clip that attaches the rear drive unit ground harness to the rear subframe.
  33. Disconnect the electrical harness from the resolver connector.
  34. Disconnect the electrical harness from the oil pump connector.
  35. Attach the drive unit sling special tool to the rear drive unit.
  36. Position the drive unit sling tool special tool underneath the gantry, and then attach the special tool to the gantry.
  37. Raise the drive unit sling tool so that there is a slight tension on the cables.
  38. Remove the bolt and nut that attach the LH mount of the rear drive unit to the subframe.
  39. Remove the bolt and nut that attach the RH bushing of the rear drive unit to the subframe.
  40. Remove the bolt and nut that attach the rear bushing of the rear drive unit to the subframe.
  41. Raise the drive unit sling tool to lift the rear drive unit out of the rear subframe.
  42. Release the clips that attach the subframe electrical harness to the bottom and top of the rear subframe, and then remove the electrical harness from the rear subframe.
    Figure 2. Top view of the rear subframe
    Figure 3. Bottom view of the rear subframe
  43. With an assistant, release the straps, and then remove the rear subframe from the subframe lifting tool.

Install

  1. With an assistant, install the new rear subframe onto the subframe lifting tool, and then attach the straps.
  2. Install the clips that attach the electrical harness to the rear subframe.
    Figure 4. Top view of the rear subframe
    Figure 5. Bottom view of the rear subframe
  3. With an assistant, position the rear drive unit above the rear subframe, and then lower the drive unit sling tool to install the rear drive unit into the rear subframe.
  4. Install and hand-tighten the bolt and nut that attach the rear bushing of the rear drive unit to the subframe.
  5. Install and hand-tighten the bolt and nut that attach the RH bushing of the rear drive unit to the subframe.
  6. Install and hand-tighten the bolt and nut that attach the LH mount of the rear drive unit to the subframe.
  7. Lower the drive unit sling tool to release the tension on the cables.
  8. Remove the drive unit sling tool from the gantry.
  9. Remove the drive unit sling tool from the rear drive unit.
  10. Tighten the bolts and nuts that attach the rear bushing, RH bushing, and LH mount of the rear drive unit to the rear subframe.
    80 Nm (59.0 lbs-ft)
  11. Connect the electrical harness to the oil pump connector.
  12. Connect the electrical harness to the resolver connector.
  13. Fasten the clip that attaches the rear drive unit ground harness to the rear subframe.
  14. Install the LH lower aft link to the rear subframe, and then install and hand-tighten the nut and bolt that attach the LH lower aft link to the rear subframe.
  15. Remove the halfshaft plug from the gearbox, and then install the LH halfshaft to the rear drive unit.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    When installing the halfshaft to the drive unit:
    • Take care not to damage or displace the oil seals.
    • Make sure that the opening of the snap rings are facing towards the bottom of the drive unit.
    • Carefully push the halfshaft into the drive unit until there is an audible "click" from the halfshaft stub contacting the pinion shaft.
    • There will be a slight pulling sensation on the halfshaft as the halfshaft circlip locks into place.
    • Pull on the inner halfshaft cup to confirm that the circlip is locked into place. If the halfshaft detaches from the drive unit then reinstall the halfshaft and then test that it is fully seated.
    • Set the LH halfshaft temporarily on the lower aft link.
  16. With an assistant, install the halfshaft into the LH hub and knuckle assembly.
    Informational PurposesAn informational icon, calling your attention
    Note
    Make sure that the splines for the halfshaft line up.
  17. With an assistant, install and hand-tighten the bolt and nut that attach the LH upper fore link to the rear subframe.
  18. With an assistant, install and hand-tighten the nut and bolt that attach the LH toe link to the rear subframe.
  19. With an assistant, install and hand-tighten the nut and bolt that attach the LH upper aft link to the rear subframe.
  20. With an assistant, install and hand-tighten the bolt and nut that attach the LH lower fore link to the rear subframe.
  21. With an assistant, install and hand-tighten the bolt and nut that attach the LH lower aft link to the knuckle.
  22. With an assistant, install and hand-tighten the bolt and nut that attach the LH rear damper to the lower aft link.
  23. Install the washer, and install a new nut to attach the halfshaft to the LH rear hub.
    300 Nm (221.2 lbs-ft)
  24. Install the rear LH ABS wheel speed sensor to the LH rear knuckle, and then install a new bolt to secure the sensor to the knuckle.
    5 Nm (3.7 lbs-ft)
  25. Install the grommet and fasten the clip that attach the rear LH ABS wheel speed sensor cable to the rear LH knuckle and subframe bracket.
  26. Connect the subframe electrical harness to the LH rear ABS wheel speed sensor connector, and then fasten the clip that attaches the sensor connector to the subframe.
  27. Repeat step 14 through step 26 for the RH side of the rear subframe.
  28. Install the LH and RH coil springs onto the rear lower aft links.
  29. Fully raise the handle on the rear drive unit HV connector of the rear drive unit to HV battery harness.
  30. Install the HV connector special tool onto the rear drive unit HV connector.
  31. Use both hands to firmly connect the rear drive unit HV connector of the rear drive unit to HV battery harness to the rear drive unit HV header.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Make sure that the connector fits the header squarely and tightly, and that both retention pins enter the handle.
  32. Remove the HV connector special tool from the rear drive unit HV connector.
  33. While pressing the rear drive unit HV connector onto the rear drive unit HV header, fully lower the handle.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Make sure that the handle does not bind as it is lowered.
  34. Slide the release to lock the rear drive unit HV connector handle in the secured position.
  35. Verify that the rear drive unit HV connector is fully seated, and compare both sides of the connector that it is properly secured in place.
    Informational PurposesAn informational icon, calling your attention
    Note
    An improperly seated connector might lead to connector damage and rear drive unit problems later on.
  36. Install the bolt that attaches the HV harness bracket to the inverter.
    6 Nm (4.4 lbs-ft)
  37. Connect the rear drive unit inlet hose to the inverter coolant coupling, and then fasten the clip.
  38. Fasten the clip that attaches the rear drive unit inlet hose to the HV harness bracket.
  39. Connect the electrical harness to the inverter low voltage connector.
  40. Fasten the clip that attaches the low voltage electrical harness to the inverter.
  41. Install the rear subframe to the vehicle. See Subframe Assembly - Rear (3DU) (Remove and Install).
  42. Refer to the Alignment Requirement tables to determine whether an EPAS alignment check (EC) or four wheel alignment check (AC) is necessary. If performed, add the alignment check/adjust as a separate activity. See Alignment Requirement - Suspension.