Transfer Case
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1989 Dodge Ramcharger, 1989 Dodge Ram Wagon, 1989 Dodge Ram Van, 1989 Dodge Pickup, and 1989 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
Raise vehicle. Position drain pan under transfer case. Remove drain and fill plugs and drain lubricant completely. Install drain plug. Tighten plug to 40 ft. lbs. (54 N.m). Remove drain pan. Fill transfer case to bottom edge of fill plug opening with lubricant. Lower vehicle.