On certain 4WD vehicles, lubricant in the transfer case may leak, because the application of liquid sealant on the matching surfaces of the input axle case and the output axle case in the gearbox (transfer), which transmits power to the rear wheels, is inadequate. If left unfixed, in the worst case, the bearing which supports the output axle gets damaged because of the lack of lubricant, and the vehicle becomes stalled.
