Peter M Novi , MI July 26, 2015 Appliance: KitchenAid 30" Electric Built-In Ceran Cooktop KECC508RPB00 Kitchenaid Cooktop Kecc508rpb00: Cracked glass cooktop with surface touch control. How to replace Asm -Glass,Kecc568rpb. (1) Put on leather work gloves (2) Lifted cooktop box out of countertop and using wood slats rested cooktop off surface (the thin 1/16 gasket that glass was resting on was in good shape so didn't need to replace (3) Unscrewed 8 screws on metal flange holding cooktop glass surface to cooktop box (4) glass cooktop and flange easily lifted off (5) there was a plastic three prong alignment pin glued to cooktop glass that probably was just there to keep box controls aligned during shipping. I pried the plastic alignment pin off the old broken glass cooktop using putty knife and put the alignment pins in the holes of the control box (probably not necessary as this part was not listed in the parts diagram of the cooktop). (6) the touch sensors on the control box are suspended on springs so that when glass cooktop is replaced they rest against the glass. (6) Placed glass cooktop on cooktop box the flanges of the replacement cooktop glass fit perfectly around the cooktop box.. (7) Put the 8 screws back (8) Gently lowered the cooktop back into the countertop opening by removing one slat at a time. 5 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes