Good Sam Club Open Roads Forum: Class C Motorhomes: Dewinterizing issue
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 > Dewinterizing issue

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AJR

Close to Madison Wisconsin

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Posted: 06/06/19 05:32pm Link  |  Quote  |  Print  |  Notify Moderator

First you are not looking for a plug. You are looking for a valve or two I think. If the low point drains are open.

If you put water into the fresh water tank and water is coming out someplace. There are only three valves that will let water out. The fresh water drain valve and the two low point drain valves. Well there could also be a real plumbing problem also.

I had an RV that had the two low point drain valves that were visible only from the outside under the rig behind the rear wheels. Not very convenient. They are used while winterizing the plumbing.

Most often the valve to drain the fresh water tank is next to the fresh water tank or sometimes external. Where ever that may be. That water tank is drained every fall while winterizing the system.

Learn how to do it yourself is a good suggestion.


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ragdogs

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Posted: 06/08/19 10:15am Link  |  Quote  |  Print  |  Notify Moderator

I took a look under the Moho. My levers etc are under my mattress in corner of Moho It drains/leaks when I turn the water pump on and it is coming out underneath. I am unable to attach the pic but it is two tubes/hoses directly under my bed area that drains the water tank when I put the pump on. I realize it is a valve or plug but I just can’t find it or figure it out.


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reinita

Lansing, Michigan

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Posted: 06/24/19 05:41pm Link  |  Quote  |  Print  |  Notify Moderator

To the OP, I am still learning how to do all of this. I often don’t even know what anything is called, so directions with proper terminology aren’t always useful. Ha!

I had a similar issue. Here are some things to check. This said, I am not familiar with your particular motorhome, but I do have a class C.

There should be a couple of drains under your unit. Mine are blue plastic. They look like long straws. One has (or should have) a screw-on cap.

If you think about where those tubes come from, look in one of your outside compartments on top of the drains (tubes). My motorhome has a lever that I can turn up or sideways. It is attached to one of the tubes. When it is turned sideways (or perpendicular), that blocks the flow of water from the fresh water tank. If it’s turned up and down (parallel) to the tubes, it lets the water out (drains the tanks).

Something else to check is whether the anode (it’s a metal rod that gets screwed into the hot water heater) is not screwed on. Depending on whether they bypassed the hot water heater when they winterized or not, water may be pouring out of your water heater if the anode is not in properly.

Hope that helps!


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bobndot

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Posted: 06/24/19 08:15pm Link  |  Quote  |  Print  |  Notify Moderator

ragdogs wrote:

I took a look under the Moho. My levers etc are under my mattress in corner of Moho It drains/leaks when I turn the water pump on and it is coming out underneath. I am unable to attach the pic but it is two tubes/hoses directly under my bed area that drains the water tank when I put the pump on. I realize it is a valve or plug but I just can’t find it or figure it out.


There might be a petcock (valve) that you can turn on/off next to the water pump.

The ends of the tubes:
If one has an open end and one has a capped end that can unscrewed, then the open end tube should have a valve somewhere above that tube. If your water pump is near that location, that would my guess for its location.

You would just to remove the cap off the capped tube to drain that one. That's usually the hot water drain. The other open ended tube is the cold line and it can sometimes also be the low point drain for your freshwater tank. If your system is designed that way , that line will take longer to drain than the capped line because of the volume of water being drained out of your water tank.

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