Last April, while doing our routine prep week chores before a camping trip, I lifted the propane tank cover to see if the gas regulator showed green (indicating that my active tank had propane) and I noticed the faint smell of propane. I know that the first places to look for gas leaks in this area are the pigtail hoses that connect the tanks to the regulator, especially at the connection points. These thermoplastic hoses become hard and stiff and often develop small leaks after a few years. To find the leak, I used a small spray bottle filled with soapy water using liquid dish soap and spritzed the hoses and connections. (See Airstream Life‘s video, Detecting a propane leak.*)
The leak was revealed by profuse bubbling at the QCC ACME Type 1 (green) fitting that connects the hose to the tank. Since our OEM hoses were eight years old, I decided to replace them both. The trick was to find the correct replacement hoses. Our OEM hoses were Model A4 made by Marshall Gas Controls in 2006. Propane pigtail hoses are available with different fittings at the regulator end, such as male inverted flare and male pipe thread fittings (See The RV Doctor article, “Propane Pigtails Needed.”) Our OEM regulator (Marshall Automatic Regulator, Model 250) accepts a 1/4 inch MNPT (Male National Pipe Thread) fitting. I found that the easiest and best way to find my correct replacement pigtail hose (and not have to buy an adapter) was to take my OEM hose to our local RV supply store, San Diego Trailer Supply, which assured me they would have the right hose or make me one! They matched my OEM pigtail with one off the shelf, a Marshall Excelsior MER426-15, a 15″ pigtail with 1/4″ MNPT fitting. My OEM hoses were 12″ long, but some believe the 15″ hose would be subject to less stress (See “It’s as easy as bungee jumping.”) The hose on the left in the photo below is the OEM hose.
I gathered my tools, which included a 9/16″ wrench (an adjustable wrench would also work just fine) and PTFE thread seal tape (yellow coded for gas line). (I did not use the pipe thread sealant seen in the photo above.) I then wrapped the 1/4″ male pipe threads with 4 full wraps of the seal tape, wrapping clockwise.
The new pigtails were then attached to the tanks and regulator.
The job was finished by placing and securing the propane tank cover.
This job was done by using just three tools: soapy water sprayer, wrench, and seal tape.
This job is one of many routine tasks covered in the hot-off-the press new book, Airstream Life’s (Nearly) Complete Guide To Airstream Maintenance, by Rich Luhr, Editor of Airstream Life magazine. Rich says, “You can keep your Airstream investment in excellent running condition for the rest of your life with just a little knowledge and a few tools. Most Airstream maintenance is simply a matter of inspecting, cleaning, lubricating, and easy adjustments — and this book will teach you how to do all of those things.” In writing this book, Rich says, “I wanted to defuse the myths, clarify the facts, and point people to easy and correct options.” This spiral-bound book has 219 pages packed with information, is well illustrated and the perfect size to keep in our Airstream, along with our traveling toolkit.
Now that I have my current Airstream maintenance in hand, I can go back to my ongoing summer reading, Promises To Keep: On Life and Politics, by Joe Biden…**
… and to photographing the ongoing cactus blooms in our backyard as seen in my post, “A Peruvian Apple Cactus interlude“, History Safari Expresso.
*This is a link to a YouTube video.
**This is a link to a CBS NEWS video.