Transfer Case

Remove transfer case fluid fill plug. See Fig 1 . Check fluid level at transfer case fill plug hole. Fluid should be level with bottom of fill plug hole. See Fig 2 . Fill the transfer case to the proper level with appropriate fluid. See RECOMMENDED FLUIDS  and FLUID CAPACITIES  .

Fig 1: Identifying Fluid Fill & Drain Plugs

Courtesy of FORD MOTOR CO.

Fig 2: Viewing Transfer Case Fluid Levels

Courtesy of FORD MOTOR CO.