Place a suitable drain pan beneath the extension housing. Clean the area
around the transfer extension housing seal.
Matchmark the driveshaft to the rear axle flange. Disconnect the driveshaft
and pull it rearward from the unit.
Remove the extension housing seal using tool T74P–77248–A or
equivalent, remove the extension housing seal.
To install:
Fig. 2: Extension housing seal installation
To install, lubricate the inside diameter of the oil seal and install the
seal into the extension housing using tool T74P–77052–A. Check
to ensure that the oil seal drain hole faces downward. Install the remaining
components in the reverse of removal. Make sure the marks on the driveshaft
made during removal are in alignment.
