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RV Doctor: Leaky Plastic RV Holding Tank

Repairing a plastic black-water holding tank at an RV park while on the road.

To have RV Doctor Gary Bunzer help cure what ails your RV, post questions in the comments section. Note that he can only diagnose and offer prescriptions for a select few conditions. Although every effort is made to ensure accuracy, not all responses will apply in every instance. Some situations will require additional inspection or testing. Before following instructions or procedures covered in this video series, you must satisfy yourself that products, equipment, and your personal safety won’t be compromised or jeopardized. When in doubt, work with an RV service facility. The advice offered by the RV Doctor is solely that of Gary Bunzer and not of RM Acquisition, LLC d/b/a Rand McNally. Likewise, products and manufacturers provided as examples don’t signify endorsement by Rand McNally.

  1. Shawn Fluhr

    I have a 2006 Winnebago Adventurer 38T Class A with true residential air, as they advertise, and although when the air is on the air always feels cool it will not keep up on a 85-100 plus day. The temp in the coach keeps rising all day and the air of course never shuts off. At night when the temp finally cools down outside and the sun goes down it will get the temp inside the coach down to the set temp by morning. I have cleaned the cond. fins checked the air filter ect. A friend of mine has the same camper and his works fine. We have talked to other Winn/ Itasca owners with similar problems and the dealers all tell them it is sealed and cant be serviced and there is nothing wrong with it. I realize it is probably a sealed unit but being in the auto industry I cant help but believe that it doesnt just need a top off of freon to perform properly. Any thoughts, Thanks, Shawn