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Old 09-12-2019, 12:55 AM   #1
Winnebago Camper
Join Date: Jan 2018
Posts: 14
Gray Tank Valve Stuck

On our recent trip, the gray tank valve stuck. Fortunately i was able to find an RV tech who solved the problem so we were not delayed en route. What he found was interesting. The cable instead of directly attached to the valve, made a large loop creating a lot of play and friction. There was a small amount of corrosion that ordinarily would have been a problem if the cable took a straight o route to the valve. This is a new trailer, and the tech noticed the coverings over the valves had been taped as though work had been done or something replaced. The valve has alway been hard to open and close, so the redundant cable would explain the problem. We were able to free the cable with lubricant and get it to work (I plan to keep it lubricated), but i am thinking I should have the valve and cable replaced. The TT is now out of warranty, but I donít want to press my luck, have it happen again, and be somewhere where it will be difficult to fix it. I canít image that this is the original design and someone replaced the cable with what was available at the time-we bought the trailer new.
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Old 09-12-2019, 05:30 AM   #2
Just Trying to Help
Join Date: Aug 2015
Posts: 216

Cable-operated valves should have guidelines for the "entry angle" and bend radius of the cable. Thus, a correctly-installed cable could include a loop of what appears to be "extra" cable. See page 2 of this link for an example of installation guidelines:
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
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Old 09-12-2019, 06:54 PM   #3
Winnebago Camper
Join Date: Jan 2018
Posts: 14
Thanks for the info. I don’t have a picture or any measurements to know if the cable is within the guidelines, and I don’t want to undo the tape to take a look. The tech did secure the cable at several points to limit movement. I will keep the cable well lubricated at the exit point and take my chances, but if i notice increasing resistance, relook.
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