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Transfer Case Vent: Installation

  1. Inspect the condition of the PTU  vent hole.
    • By hand, insert the new PTU  vent into the PTU  cover and measure the distance between the PTU  cover and the vent as indicated.
    • If the measurement is less than specification, install a new PTU  .
      Fig 1: Measuring Distance Between PTU Cover And Vent
      G06098392Courtesy of FORD MOTOR CO.
    2. NOTE: Do not apply silicone sealant to the Power Transfer Unit (PTU) vent hole as it may cause damage to the PTU internal components.
    Fig 2: Applying Bead Of Silicone Gasket And Sealant To Transfer Case Vent
    G06098393Courtesy of FORD MOTOR CO.
  2. Apply a bead of silicone gasket and sealant to the PTU  vent where indicated.
    3. NOTE: Drive the PTU  vent in until the Vent Tube Installer bottoms out against the PTU  rear cover boss.
    Fig 3: Identifying Vent Tube Installer
    G06098394Courtesy of FORD MOTOR CO.
  3. Using the Vent Tube Installer, install the PTU  vent.
  4. Measure the depth of the PTU  vent.
    • If the vent is too high, repeat Step  3.
      Fig 4: Measuring Depth Of Transfer Case Vent
      G06394124Courtesy of FORD MOTOR CO.
    5. NOTE: Make sure the Power Transfer Unit (PTU) vent boot is correctly aligned or damage to the components may occur.
    NOTE: Use a soapy water solution to lubricate the PTU  breather boot.
    Fig 5: Identifying Power Transfer Unit (PTU) Vent Boot
    G06098396Courtesy of FORD MOTOR CO.
  5. Install the PTU  vent boot.
  6. Install the PTU  . For additional information, refer to POWER TRANSFER UNIT (PTU) .
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