grey dump valves stuck open

[brycliff]

2015 Cedar Creek Hathaway edition. When I purchased this and got it home I started to remove the sewer cap to connect sewer line, water started spraying out! I found all 3 dump valve handles pulled in the open position. Only the black water valve handle moved, the two grey were stuck tight. I have been trying for over 3 months to get them free using WD40, 4in1 oil and pounding on the handle. The dealer says I have to bring the trailer back for 3 days to get the cables replaced I have several posts here about replacing the valve, but this is a problem with the cable. The handle is frozen right where it goes into the bracket.

[edt]

Mine is in parked to never be moved don't care about grey but had to replace black cable was kinked


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[brycliff]

We are gate attendants at a US Army Corps of Engineers RV park and live in ours for the duration of a 2 year contract. The Corps provides a site with 50A electric, water and sewer. The trailer has not moved since we brought it here, but our contract here is finished Oct 1 and we will have to go to the next then.

[dieselguy]

It's pretty easy to replace just the cable even if you have to buy the whole valve to get the cable. A phillips screw driver an allen wrench and a couple of crescent wrenches is about all the tools you need. Take part of the belly pan down below the tanks, remove the phillips head screw and set screw from the valve itself, remove the handle and lock nut. Tie and tape a pull string to the end of the cable assy and pull it out. Pull the new cable assy in with the aid of the pull string and reassemble.

[Jim34RL]

You can buy a twist on gate valve for the entire dump line such as a Valterra T58 twist on valve. This will allow you to move to the dealer and have them fix stuck dump valves.

I have one on my unit just as a back-up in case one of the dump valves leak. We also use this valve to extend the gray water tank capacity between the shower tank and the galley tank when needed.

See link attached:
Amazon.com: Valterra T58 Twist-On Waste Valve: Automotive