Grid Filament Repair
- To repair grid, turn system off and disconnect negative battery cable. Gently clean area to be repaired with steel wool. Wipe area clean with denatured alcohol. Be sure to clean 1/4" (6 mm) beyond each side of break.
- With glass at room temperature of 70-90°F (20-32°C), position masking tape along both sides of grid line at damaged area. See Fig 1
. Apply grid repair material to grid and carefully remove masking tape. Holding heat gun 1-2" (25-50 mm) from repair area, apply heat at 500-700°F (260-370°C) for 2-3 minutes. If heat gun is not available, allow repair area to air dry for at least 24 hours.
- Test defogger operation to verify repair. If repair appears discolored, apply a coating of tincture of iodine. Allow iodine to dry for 30 seconds and carefully wipe off excess.
Courtesy of GENERAL MOTORS CORP.