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Old 04-07-2021, 07:54 PM   #1
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Black waste valve replacement

I have 1997 Holiday Rambler Motorhome that has a waste valve that is not working properly. The cable is working and I can see the slide working, but the valve is not shutting off. It is so far under the floor I can't reach the valve. It looks as if it is under rear bedroom. My question is, has anyone cut, an access hole under the bed to access the valve for replacement? There is carpet and plywood under that, I don't know if there metal under that. Seems the easiest way to access the valve and I can re-cover the hole, but I don't know how the floor is constructed. Any help would be greatly appreciated. Without cutting a lot of water lines and drain lines I can't see how to get to it.
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Old 04-07-2021, 11:44 PM   #2
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Black waste valve replacement

Originally Posted by Travelmax View Post
I have 1997 Holiday Rambler Motorhome that has a waste valve that is not working properly. .......It is so far under the floor I can't reach the valve....... Without cutting a lot of water lines and drain lines I can't see how to get to it.
Iím not clear on what you mean. You canít reach it because access is blocked by many other RV parts, or you canít reach it because it is too far under for you to reach it (without crawling way under the coach)?
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Old 04-08-2021, 03:56 AM   #3
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1) Sometimes there is a hatch on the passenger side, inside a storage compartment. It's used for access to the Ford in-tank fuel pump, but also for access to the waste valves. The hatch can be a bit hard to see. There may not be one in your model.

2) The white panel in the wet bay can be removed, and you may be able to get access that way. See this post for an example.

It would be unusual for HR to have provided no way to access the waste valves. I would not cut through the floor under almost all circumstances.
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Old 04-08-2021, 08:24 AM   #4
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I would not cut through the floor without first seeing what is directly below as you could cut electrical wires, plumbing lines, or even a structural member.
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Old 04-08-2021, 10:15 AM   #5
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May be wrong but I can't imagine the valve not being accessible from underneath. The OP, or a friend, needs to get on under there and see what things look like. Run the rear of the motorhome up on ramps or jack it up a tad (use good jack stands) if needed.

I would not cut a hole in the floor as I'm pretty sure that is not necessary for this repair.
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Old 04-08-2021, 11:06 AM   #6
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In a worse case scenario, add a new valve (bayonet connection) at the sewer drain.
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Old 04-09-2021, 05:32 AM   #7
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Use an add-on shut off valve. They are only about $25 and quick to install. That gives you plenty of time to decide whether or not to make the repair.
May your smiles be many and the miles be plenty.

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ace, replace, replacement, valve

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