28/02/2024 10:45:15
Oil Pump - 3DU Small Rear Drive Unit (Remove and Replace)
Correction code 40304602
- 2024-02-28: Updated gearbox fluid.
Removal
- Activate Jack mode, see Jack Mode Activation.
- Open the LH front door.
- Lower the LH front window.
- On the touchscreen, touch Firmware Update. and make sure the installed firmware version is 2019.40.50 or later. If necessary, update the firmware, see
- Disconnect 12V powery, see Disconnect 12V Power.
- Raise the vehicle to a comfortable working height, see Raise Vehicle - 2 Post Lift.
-
Remove the subframe shear
plates by removing the nyloc nut (torque 35 Nm), clips (x2), and screws (x3)
(torque 6 Nm) that secure each shear plate to the subframe.
NoteDiscard the nyloc nut after removal.
- Remove the mid aero shield, see Panel - Aero Shield - Mid (Remove and Replace).
- Disconnect the electrical connector of the rear drive unit oil pump.
- Position an oil drain container under the rear drive unit drain plug.
- Remove the rear drive unit fill plug (torque 28 Nm), and then remove the rear drive unit drain plug (28 Nm) to drain the fluid into the oil drain container.
-
Install a flexible funnel to prevent fluid from spilling, and then remove
the oil filter.
NoteTesla recommends that the oil filter is replaced with a new one upon removal. Any oil filter with visible corrosion or leaks must be replaced.
- Remove the bolts (x2) (torque 5 Nm + 20 degrees) that attach the oil pump to the oil pump housing.
-
Remove the oil pump.
NoteCarefully insert a plastic wedge between the oil pump and the lower housing bracket and work the wedge between the lower housing bracket and the oil pump until the O-ring is visible. Then remove the oil pump by towards the front of the vehicle. Allow residual oil to drain.
- Inspect O-rings on removed parts: three O-rings on oil pump, one on each drain and fill plug and one on the oil filter.
Installation
Installation procedure is the reverse of removal, except for the following:
- Lubricate all O-rings on the new oil pump with new gearbox fluid before installing the pump. See Fluids for required gearbox fluid.
-
Install a new oil filter;
lubricate the O-ring on the filter with new gearbox fluid before installing
the filter. See Fluids for required gearbox
fluid.
NoteTesla recommends that the oil filter is replaced with a new one upon removal. Any oil filter with visible corrosion or leaks must be replaced.
- Inspect O-rings on the fill and drain plugs for any damage. Replace if damage is found.
- After installation of the drain plug, fill the rear drive unit with 2.4 qts (2400 ml) of new gearbox fluid. See Fluids for required gearbox fluid.
-
After connecting 12V:
- Connect a 12V charger to the battery.
- Redeploy the vehicle firmware using Toolbox 3, see Firmware Reinstall - Toolbox.
- Disconnect the 12V charger from the battery.
- Deactivate Jack mode, see Jack Mode Activation.