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New Member
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Aug 27, 2008, 06:10 PM
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Knockout Plug
My Uncle replaced my garbage disposal and forgot to remove the knockout plug. I tried to knock it with a screwdriver a couple of times but it didn't budge. Can I remove it without having to take the whole thing apart? If I knock it out, is it okay for it to stay in there. I have read some instructions saying to remove it and others that don't mention removing it at all.
Thanks!
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Home Improvement & Construction Expert
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Aug 27, 2008, 06:34 PM
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You must remove the hose from the dishwasher or air gap. You do have a dishwasher don't you. You don't remove the plug if you don't have a dishwasher.
Stick a screwdriver in the inlet pipe to the disposal and smack it with a hammer. You don't have to remove the disposal. Remove the plug (from top side) with something like a pair of needle nose pliers or ice tongs. You must remove it if you knock it out. It's a metal plug about the size of a quarter, will ruin disposal if disposal is run with plug inside.
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Plumbing Expert
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Aug 27, 2008, 06:43 PM
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I agree with Harold. Don't be afraid to give the plug a good whack with the hammer. It may also be a plastic plug. If you are certain that the power is off and you have a small enough hand, you can reach in and grab the knocked out plug with your fingers.
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Plumbing Expert
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Aug 27, 2008, 06:44 PM
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Hey harold, I'm also a lefty. Leftys are always right.
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New Member
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Aug 27, 2008, 06:58 PM
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Thanks everyone, I will give it a try!
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New Member
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Jul 25, 2012, 03:50 PM
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My knock out went through, but I can't seem to find it, will it cause damage?
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Home Improvement & Construction Expert
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Jul 25, 2012, 04:20 PM
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If it is metal, definitely. If the disposal has been installed, turn it on and then off as quickly as you can. If it is in the disposal you will hear it. If you used a sharp pointed instrument to knock it out you may have gone through it rather than knocking it out if it is plastic. Stick a screw driver in tube and feel around. Shine flashlight in tube.
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Senior Plumbing Expert
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Jul 25, 2012, 04:31 PM
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Yeah, that knockout has a tendency to get stuck under the blades of the disposal grinder so as Hkstroud suggested, get a flashlight and shine it into the disposal... should be able to find the knockout quickly that way.
Mark
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Eternal Plumber
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Jul 25, 2012, 04:48 PM
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Great advice from all the experts, If you can't locate the plug under the cutter blades you'll find it stuck in between the table and the wall. Good luck, Tom
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New Member
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Dec 1, 2012, 11:23 AM
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Thank you so much! I've been having the same problem with a house that I've been renting. The landlord went as far to to replace the diswasher instead of repairing the old one. When I ran the first load I didn't have the heart to tell them that this one wouldn't drain either. Sure enough, I just knocked out the knockout plug about 15 minutes ago and this dishwasher is working like a champ. Now I get to rub in my boyfriend's face when he gets home :)
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Eternal Plumber
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Dec 1, 2012, 11:53 AM
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Hi caty and welcome to The Plumbing Page at AskMeHelpDesk.com
Kudos and congratulations girl! Good job. You did run a high loop air gap.(see image) on the discharge hose didn't you? Rub your boyfriends nose in that when he gets home. Good luck, bTom
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New Member
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Dec 1, 2012, 12:30 PM
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Thank you! I disconnected the hose coming from the dishwasher that was attached to the disposal, knocked out the plug, and reattached the hose and tightened the clamp. Do I need to attach the hose to the top of the cabinet or brace it somehow, or is it just like that in the picture?
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Eternal Plumber
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Dec 1, 2012, 12:50 PM
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You attach the hose up as high as you can. Secure it with a 1 1/2 pipe strap or anything that will keep it secure. Good luck, Tom
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