Drivetrain - Transfer Case Fluid Leak

39 Transfer case leaks

39 10 05

2016880/6

August 3, 2010

Supersedes Technical Service Bulletin Group 39 number 10-04 dated July 1, 2010 for reasons listed below.





Affected Vehicles





Condition





Leaks in the area of the transfer case.

^ Oil leak between automatic transmission and transfer case (Figure 1, A).

^ Oil leak at front driveshaft output flange on transfer case (Figure 1, B).

Technical Background

^ Transfer case input shaft seal is damaged during installation.

^ The internal circlip of the output flange shaft has come loose, allowing the output flange to move out slightly, causing seal to leak.

Production Solution

^ Input shaft diameter reduced for safe installation.

^ Improved production assembly process.

Service

Internal transfer case repairs are not allowed.

1. Replace the transfer case input shaft seal (Figure 1, A). Refer to ElsaWeb for seal installation instructions.

2. Replace the complete transfer case assembly if the front driveshaft output flange seal is leaking (Figure 1, B). Refer to ElsaWeb for transfer case removal and installation instructions.





Warranty





Required Parts and Tools

Additional Information

All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.