Power Transfer Unit (PTU)
If you have a leak at the transmission to Power Transfer Unit (PTU) interface proceed with the following repair. Do not replace the PTU for this leak. The issue is that the stub shaft on the transmission has become dislodged from the transmission creating a leak path from the transmission, not the PTU.
Remove the PTU from the transmission. Inspect the stub shaft's interior differential seal to see if there seal lip damage or if it has been dislodged within the shaft prior to reinserting the shaft into the transmission. Follow Tech Connect instructions for replacing the axle seal if you find that the seal has been displaced within the stub shaft. Inspect the transmission differential seal for damage also.
The risk of pulling the shaft out again still exists during assembly of the transmission and PTU. If at anytime in the assembly process you pull the PTU back off the stub shaft it may come dislodged again. FCA design changes to increase retention of the shaft are in process.
