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The ceramic cooktop on my Jenn Air downdraft model JED8403bdb has cracked. I can't find instructions for replacing just the glass. Is this because it is best left to a professional? Any advice appreciated.

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  • Starlight26 Jul 08, 2008

    The cooktop is not under warranty. It appears the glass on the corner was scored by a sharp piece of metal or something like that. I am not really sure when or how it happened. When I noticed the scratch I was cleaning the cooktop - the entire corner is wobbling when you put pressure on it. I've read that it is not safe to use the cooktop when there is a crack as a boilover could cause electrical damage.

    The cost to replace the entire cooktop is $1500 (it is a downdraft unit). The cost to replace only the glass is about $300 with shipping if I do the work myself...much more if I need to get a repairman in.

    I would be very interested to get the link explaining the replacement process.

  • Starlight26 Jul 09, 2008

    Jeff - the part number for the glass top is definitely 74007072. I live in Ontario, which probably explains why my pricing is a little different. The model number I put in my post was incorrect - it should have read 8430, not 8403. This is an electric downdraft cooktop installed in an island with a granite countertop. I did go to your link and printed it out. Is the procedure the same if the cooktop is not part of a stand alone range?

    I did not install the original unit. Looking at it from underneath, it does not appear there are any screws or clamps attaching the unit to the countertop - the glass part sits above the counter - the downdraft unit and element box are below. There are screws visible when you remove the downdraft center grate. If I unscrew these will the entire bottom part fall?

    Appreciate any advice you can offer!

  • Starlight26 Jul 09, 2008

    I found a service manual with good instructions through the Maytag Service Library ( I have to disconnect the downdraft from the unit then lift out the cooktop. It says there are twelve 1/4" hex screws securing the glass to the burner box. Doesn't sound too difficult. I found the glass through AP Wagner, a Canadian parts distributor. It is available for pick up at an outlet not too far from where I live so that at least saves me the shipping charge. Thank you for your help!

  • Jeff Rockwell
    Jeff Rockwell May 11, 2010

    Is your range still under warranty? How did this happen? The reason I ask is if the range is under warranty, and if this was caused by a design flaw (i.e., the cooktop just cracked for no apparent reason) this repair would be covered under warranty and you would not have the worry of deciding whether or not you wanted to attempt this on your own. If this was caused by you (even if it was an accident), or if the warranty has expired, the manufacturer will not cover the cost of repair. I can post a link to you, explaining, step-by-step, how to replace the cook top if you want to pursue a repair option on your own. In addition, these tops generally, aren't cheap. This is another deciding factor that you may want to consider. Please post back and let me know what you decide.


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You are correct in your assessment that leaving a cracked cooktop in place could present a potential hazard. Are you sure you have the correct model number posted? I ask because I found a JED8430 model number listed at with the glass top, item number 935927, listed for $215. There's also another one listed as item number 948440 for $226. The second glass top also requires 4 corner tapes (item number 696731). Of course, these prices did not include shipping. Something you may consider, though. If this is not your model number, then ignore the previous question.

Click on the following link for the step-by-step instructions I said I would offer you:

If the instructions are insufficient, please let me know. If you have any questions along the way, also let me know. I hope this helps you.


Posted on Jul 09, 2008

  • Jeff Rockwell
    Jeff Rockwell Jul 09, 2008

    Sorry, didn't realize you were in Canada. I wonder if repairclinic ships to you? Okay, my experience with these downdraft units that are installed in an island, require you to actually remove the unit to get to the remaining screws. There should be screws located around the perimeter of the cooktop along the sides of cabinet, and they may not be accessible unless you remove the unit. Removing may not be easy. You will have to remove the bottom panel and disconnect the downdraft vent line and any electrical connections. Once the unit is out, yes, the instructions should still apply.


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