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Liftgate Window Glass: Installation

CAUTION: After installing the new urethane installed glass, the vehicle should not be driven until the urethane adhesive has cured. The curing time at temperatures above 13°C (55°F) and relative humidity above 50% is 12-24 hours. (Refer to the Essex drive away chart for the cure times as the temperatures and humidity vary.) Inadequate curing of the urethane adhesive may adversely affect the strength of the urethane adhesive bond.
  1. Dry-fit the new liftgate window glass by centering it side to side and by adjusting the setting blocks (if equipped) to get the correct position top to bottom. Make alignment marks with tape or non-staining grease pencil on both the glass and the vehicle body.
    2. CAUTION: Care must be taken to avoid scratching the pinch weld.
    Fig 1: Triming The Remaining Urethane Adhesive On The Pinch Weld
    G03456675Courtesy of FORD MOTOR CO.
  2. Trim the remaining urethane adhesive on the pinch weld using only the full-cut method, leaving a level bead around the entire pinch weld.
  3. Use the wool applicator to apply Urethane Metal Primer Essex U-413 meeting Ford specification WSB-M2G234-C to any exposed metal on the pinch weld. Allow six to ten minutes to dry.
  4. If reinstalling the original liftgate window glass, remove any excess urethane adhesive.
  5. If installing a new liftgate window glass, clean the inside of the glass surface with an alcohol-free cleaner to make sure the ceramic-coated area is clean.
    6. CAUTION: Wipe off the Urethane Glass Prep immediately after each application because it flash dries.
  6. If installing a new liftgate window glass, apply Urethane Glass Prep Essex U-401 meeting Ford specification WSB-M2G314-B twice around the glass surface to be prepped.
    7. CAUTION: Apply using deliberate strokes, making sure not to overlap the applied area.
  7. If installing a new liftgate window glass, apply Urethane Glass Primer Essex U-402 meeting Ford specification WSB-M5B280-C to the same area that was prepped in the previous step. Allow five to ten minutes to dry.
  8. If equipped, install Norton Foam Sealant 565 Black Foam Tape meeting Ford specification WSB-M3G77A to the pinch weld area.
    • Start at the bottom center of the pinch weld.
      Fig 2: Install Norton Foam Sealant 565 Black Foam Tape To Pinch Weld Area
      G03456676Courtesy of FORD MOTOR CO.
  9. Cut the urethane adhesive applicator to specification.
    Fig 3: Cutting Urethane Adhesive Applicator Tip
    G03456677Courtesy of FORD MOTOR CO.
    10. CAUTION: If vehicle is to be driven within 24 hours of urethane adhesive application, Urethane Adhesive Essex U-216 meeting Ford specification WSB-M2G316-B must be used due to its one hour cure time.
    Fig 4: Applying Bead Of Adhesive To Pinch Weld
    G03456678Courtesy of FORD MOTOR CO.
  10. Apply a bead of Urethane Adhesive Essex 400-HV or Essex U-216 meeting Ford specification WSB-M2G316-B to the pinch weld on top of the existing urethane.
    11. CAUTION: Open the windows to prevent the liftgate window glass from being pushed out by air pressure if a door is closed.
  11. Install the liftgate window glass.
  12. After the glass is set, check for water leaks and add urethane adhesive where needed.
  13. Install the high mounted stoplamp.
  14. Install the wiper motor. For additional information, refer to WIPERS AND WASHERS .
  15. Connect the two rear window defrost electrical connectors.
    Fig 5: Connecting Rear Window Defrost Electrical Connector
    G03456679Courtesy of FORD MOTOR CO.
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