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Home >> Tesla >> 2012 >> Model S >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Front Drive Unit -- Model S >> Front Inverter >> Inverter Air Leak Test - Front Drive Unit >> Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inverter Air Leak Test - Front Drive Unit: Procedure

  1. Remove the front drive unit, refer to DRIVE UNIT - FRONT (1ST GENERATION) (REMOVE AND INSTALL) .
  2. Remove the coolant hoses from the front drive unit.
    G14982477Courtesy of TESLA, INC.
  3. Remove the acoustic cover from the inverter.
  4. Remove the bolt that attaches the inverter breather cover to the inverter, and then remove the cover from the inverter (torque 6 N.m)
    G14982478Courtesy of TESLA, INC.
  5. Remove and discard the breather from the inverter.
  6. Insert the breather plug into the inverter breather hole.
    G14982479Courtesy of TESLA, INC.
  7. Insert the logic plug into the inverter low voltage connector.
    G14982480Courtesy of TESLA, INC.
  8. Insert the HV input plug and HV input adapter into the inverter HV connectors.
    G14982481Courtesy of TESLA, INC.
  9. Connect the pack enclosure leak tester to the HV input adapter.
  10. Close both valves on the pack enclosure leak tester, and then connect a compressed air supply line.
  11. Fully close the regulator, and then open the inlet valve.
  12. Set the regulator to 1 psi.
  13. Open the outlet valve, and allow at least 1 minute for the pressure to stabilize to 1 psi.
  14. Close the inlet valve, record the starting pressure displayed, and then start a 60-second timer.
  15. After 60 seconds record the ending pressure displayed.
  16. Subtract the ending pressure from the starting pressure, and if:
    • The difference is greater than 0.2 psi, check the hose, adapter, and plug fittings, close the outlet valve and open the inlet valve, check the regulator pressure, and then retest from step 12. If the difference is still greater than 0.2 psi, escalate a Toolbox session.
    • The difference is 0.2 psi or less, continue the procedure.
  17. Disconnect the air supply from the pack enclosure leak tester.
  18. Open the inlet valve, and then disconnect the pack enclosure leak tester from the HV input adapter on the lower inverter HV connector.
  19. Remove the HV input plug and HV input adapter from the inverter HV connectors.
    G14982482Courtesy of TESLA, INC.
  20. Remove the logic plug from the inverter low voltage connector.
    G14982483Courtesy of TESLA, INC.
  21. Remove the breather plug from the breather hole.
    G14982484Courtesy of TESLA, INC.
  22. Install a new breather into the inverter breather hole.
  23. Install the inverter breather cover onto the inverter, and then install the bolt that attaches the cover to the inverter (torque 5 N.m).
    G14982485Courtesy of TESLA, INC.
  24. Install the acoustic cover over the inverter.
  25. Install the coolant hoses to the front drive unit.
    G14982486Courtesy of TESLA, INC.
  26. Install the front drive unit, refer to DRIVE UNIT - FRONT (1ST GENERATION) (REMOVE AND INSTALL) .
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