Grid Wire, Back Window Glass

NOTE: There are two methods for repairing terminal separation from back window glass and/or grid breaks. Method 1 involves soldering the terminal to the glass and Method 2 uses an epoxy adhesive.

Method 1

 CAUTION: Do not use scrapers, sharp instruments or abrasive cleaners on the interior surface of the tailgate back window glass (42006), as this may cause damage to grid lines.

Any break in the grid longer than 25mm (1 inch) cannot be serviced. The rear window must be replaced. For breaks less than 25mm (1 inch) long, use the following procedure:

Surface Preparation

1. The vehicle should be brought inside and permitted to come to room temperature of 16°C (60°F) or above.

2. Clean entire grid line repair area with Ultra-Clear Spray Glass Cleaner E4AZ-19C507-AA or equivalent meeting Ford specification ESR-M14P5-A to remove all dirt, wax, grease, oil or other foreign matter. It is important that repair area be clean and dry.

Mixing

The bottle of Rear Window Defroster Repair D8AZ-19562-AA or equivalent meeting Ford specification ESB-M4J58-A and touch-up paint must be at room temperature. Shake bottle for at least one minute for thorough mixing. Shake frequently during use.

Application

1. Mark location of break on outside of tailgate back window glass.

2. Using cellulose tape, mask off area directly above and below grid break. The break area should be at the center of the mask and tape gap must be no wider than existing grid line.

   
   
   
   
   

3. NOTE: If the brown layer of the grid is not broken or missing, apply only the grid repair compound to the break. If both brown and silver layers of grid are broken or missing, apply a coating of the brown touch-up paint across break area first. Two coats may be necessary to obtain proper color. Allow touch-up paint to dry, then apply three coats of grid repair compound, allowing three to five minutes drying time between coats. The coating of grid repair compound should extend at least 6.35mm (1/4 inch) on both sides of break area.

   Apply the repair coating in several smooth continuous strokes (allowing three to five minutes drying time between coats) across the break area using the brush applicator in the cap. Extend the service coating at least 6.35mm (1/4 inch) on both sides of the break area.

4. Allow to dry for five minutes, then remove mask.

5.  CAUTION: Be careful not to damage the grid line with the razor blade.

   After removing mask, check outside appearance of grid repair. If repair compound is visible above or below grid, this excess should be removed. This can be done by placing a single-edge razor blade on the glass parallel to grid and scraping gently toward grid.

Curing

The repair coating will air dry in approximately one minute and can be energized within three to five minutes. Optimum hardness and adhesion occurs after approximately 24 hours. At that time, the repair area may be cleaned with a mild window cleaner.

Method 2

NOTE: This method requires a repair kit number 50-25-0584-0029 available from:

• Marketing East Company
• No. 10 Liberty Street item>North Andover, MA 01845
• Att'n: Sales
• Phone: (508) 689-9565

Contact the manufacturer for the latest ordering information.

Terminal Repair

1. Following the manufacturer's instructions, clean the repair area.

2. Following the manufacturer's instructions, apply conductive cement to the repair area.

   
   
   
   
   

3. Following manufacturer's instructions, position and hold the pigtail terminal on the conductive cement.

4. Following manufacturer's instructions, apply heat to the repair area.

   
   
   
   
   

5. After allowing sufficient cure time, according to manufacturer's instructions, reconnect the heated back window switch and light connector to the pigtail terminal and retest the system.

Grid Line Repair

NOTE: This procedure should only be used for grid line breaks of less than 1 inch.

1. Following manufacturer's instructions, clean and mask the repair area.

2. Following manufacturer's instructions, apply conductive cement to the repair area.

   
   
   
   
   

3. Following manufacturer's instructions, apply heat to the repair area.

   
   
   
   
   

4. After allowing sufficient cure time, according to manufacturer's instructions, retest the system.