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Gray Tank Dump Valve Replacement

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Randy Perry:
Yea, I'd rather fix these kinds of things myself. Just wasn't sure what I'd see behind the panel! Thanks Mike.


Randy

Tom and Pam Brown:
i have a 1999 marquis and have replace both valves and the elelctric solenoids as well.
It was a little tight but the valve comes apart easily the only trick is to make sure the gaskets seat properly.

I used a piece of wood to hold the cover from falling.  with all the water lines attached it was not really an issue.

I had to shim the bottom of the pipe to get a ratchet on it.

Really a very simple but tedious repair.  less than 1 hour

Tom and Pam Brown:
one other thing you will have to remove the gas struts to be able to get the door far enough out to gain access.
make sure you support the door well or a headache will ensue.

Joel Ashley:
Judging by the photo, Randy may not have to remove his door struts.  I'd run with Richard and Babs' idea first, as I've found debris jammed in the slot that receives the slide in these valves in the past, and if accessible, you can brush the stuff out.  Attempts to close the valve leak by pushing hard may have served to only compress the debris more firmly in the slot, so it could be well entrenched.  Could be the valve slide or slot has been damaged by debris and will indeed require replacement, but as the guys say, I don't think it's as tough to remove the panel as it is an inconvenience.  

As mentioned by Bruce, you may need to work with an adjustment nut on the cable or rod after cleaning or replacement.

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