cman12
Boise,ID
New Member
Joined: 05/07/2008
View Profile
 Offline
|
I have a 1994 Atwood G6A-7 waterheater. I need to replace the drain plug that cracked. It is not the standard 1/2" (91857)drain plug that Atwood now uses. I contacted Atwood and they can' t find information for that far back, yet.
The original plug is slightly smaller than 1/2". Has anybody encountered this and what is the fix?
|
robatthelake
Vancouver Island
Senior Member
Joined: 08/24/2003
View Profile
Offline
|
Drive over to a plumbing supply shop and borrow a micrometer Tool to measure the Threads! Or Just try several Brass or Plastic plugs until You find the size that fits!
Rob & Jean 90 Southwind John Deere/Oshkosh/Freightliner Class A Ford 460/ Toad 92 Tracker 2 wd 5sp Convert Still running Great!
" Everything in it"Still" Works"
|
nbounder
Arizona mountains
Senior Member
Joined: 11/26/2006
View Profile
Offline
|
I'd do like Rob said, except I'd ask the plumber dude at the shop to supply you with the replacement. Any good plumber should be able to look at it once and know 'zactly what you need.
Joe
|
dougrainer
Carrolton
Senior Member
Joined: 06/11/2007
View Profile
Offline
|
In almost 30 years as a RV tech, I have NEVER seen a drain plug on an Atwood that does NOT use the 1/2 inch plug. I HAVE seen various modifications to install petcocks and such. I would bet the original plastic plug is either stripped out and you need to remove the plastic that is stuck on the inside threads OR someone has installed a insert that is slightly smaller and that is what you are seeing. Long shot is someone screwed up the original threads on the tank and have used some type of threaded insert that is smaller than the original 1/2 inch threads. Doug
|
cman12
Boise,ID
New Member
Joined: 05/07/2008
View Profile
Offline
|
dougrainer wrote: someone has installed a insert that is slightly smaller and that is what you are seeing. Long shot is someone screwed up the original threads on the tank and have used some type of threaded insert that is smaller than the original 1/2 inch threads. Doug
This could be the case. Now I just need to find the replacement (didn't have time today).
1/2" plug vs my cracked original.
* This post was
edited 05/27/08 09:53pm by cman12 *
|
|
|
SteveB
Rhode Island
Senior Member
Joined: 12/14/2001
View Profile
Offline
|
cdman,
I had a '94 Dutchman with an Atwood water heater and it used the standard 1/2" plug. Chances are that someone modified the original in some way as doug stated. The old plug looks like it might be a metric straight thread.
SteveB
'01 Dodge Ram 3500 CTD HO 6sp, Reese 15K Pro w/ Kwik Slide, Prodigy
'04 Jayco Jayflight 28.5RKS
|
robatthelake
Vancouver Island
Senior Member
Joined: 08/24/2003
View Profile
Offline
|
Now that I have seen the plug , I'm thinking that You will need to run a 1/2 " Tap into the Tank to correct the Cross threading that appears to have caused the original plug to distort! Be Very careful and That Should fix the problem!
|
cman12
Boise,ID
New Member
Joined: 05/07/2008
View Profile
Offline
|
I took the plug to hydraulic supply company. They have both Imperial and Metric plugs. They measured the plug(diameter,threads etc) and didn't find anything that would fit.
Rob, The poor picture doesn't really help but there is no visable cross-threading on the plug. But retapping might be my only option without replacing the tank.
I ran across one other person that has this odd size plug and needs a new one too.
|
Troubleshooter
Anchorage, AK
Senior Member
Joined: 05/02/2002
View Profile
|
I have run across some Nylon plugs that have a short taper on them, and some that have a long taper.
You might try your local ACE, Home Depot, or the like, and see if you can locate a 1/2" Nylon plug made by Watts, P/N PL-1189.
I use them in our Atwood water heater, and they seem to work for us.
Only One Old Fellow's Opinion
Bill
2002 Discovery 3126E CAT
2004 Saturn VUE
Mountain Master Tow Brake
|
SteveB
Rhode Island
Senior Member
Joined: 12/14/2001
View Profile
Offline
|
cdman,
Could it be a screw thread? 9/16-18; 9/16-24; 5/8-18 UNF?
Steve
|
|
|
