On my previous 2350 and current 2552, I installed an expansion tank that took care of the water pump noise--lot cheaper than replacing the pump. I also had the water backflow and black gunk in the 2350 water fill/overflow tubes. I replaced both tubes taking the sag out of each correcting those conditions.
newer 2350's don't have this problem... Was a major design change in location, location, location, as the real estate agents would say..
I will take this opportunity to address a problem that is illustrated with the discussion. The vent hose that you discussed which was filled with water. We found that the vent hose in our 2551 dipped down much as yours did before it vented next to the tank inflow valve. Because of its placement. hat vent hose will fill with water easily if there is any leakage when you add water to the tank. It if loads with water -- as ours did -- two things happen, one it can make adding water a pain, as there is no vent, in our case we had to slow the water flow down to allow the water intake to be its own vent, second if you drive with a full tank, it can act as a suction hose to pull water into the vent hose and out the side of the vehicle.We applied two solutions: like the photo shows we changed the water hose to eliminte the dip it had, now there is a down hill run to the tank for the water intake -- had to put a device to lift he hose in the middle of the hose, something form home depot from the plumbing area not sure what it is called. Next we replaced the vent hose with a longer hose that loops over the top of the intake hose so that the vent hose does not have a dip, I also carry a small hose that i use to blow into the vent hose before and after we fill if we are not on a fully flat surface.Now we fill the tak with as much water as will flow from the faucet.greg and kathy matthews2551 S
Good info I saw this tip and was planning on doing it as part of my summer projects starting next week. I had read Ron's previous info re water pumps and was looking to upgrade or do something,, saw this tip and thought might give it a try first. It seems you could extend the intake/outtake tubes to reduce the noise??? Not sure but could be a solutionFeedback on noisy water pumpsby Russ and Tiņa De MarisIn a story published a few issues ago, we posted information on how to quiet down a noisy RV water pump. Readers were quick to dip into their own experiences and shower us with advice. Here are a couple of comments that may give you further fodder for fixing your fixtures:Alan writes: "Yes, those darn pumps can be noisy! I discovered a solution out of need. I installed a valve in order to winterize the rig myself and discovered that I did not have enough room in the truck camper space allotted. What I did was create a loop with plastic tubing at the pump entry point and another at the exit of the pump in order to get the valve to fit. It worked just great and I found that the noise was reduced almost to the point I could not hear it."Adds reader Bruce Mitchell: "Several years ago I purchased a 5th wheel trailer. Whenever the water pump was running everything vibrated. It was so bad that it felt like you were standing on a foot massager. I took the trailer back to the manufacturer. They did everything that you mentioned in your article, to no avail. Out of frustration, I called SurFlow. They informed me that they had a Service Bulletin out on that very problem. They sent me a copy which I took back to the manufacturer. I had to do some talking but they finally followed SurFlow's advice and solved the problem."The pump was mounted on the plywood floor under the kitchen cabinets. It was mounted right next to an 8-inch square hole where the plumbing went through the floor. This was part of the problem as the hole allowed the floor to vibrate more. They moved the pump to the wall. The main issue and the subject of SurFlow's bulletin was that they recommend that no hard piping be connected directly to the water pump. They suggest at least 3 feet of soft hose between the pump and the hard piping. On mine they put approximately 18 inches on both the intake and outlet of the pump that connected to the hard piping. That totally took away the noise and vibration. They used a clear reinforced vinyl on my rig to connect to the water pump."SurFlow said that they have advised manufacturers of this, but I still see most RVs have the hard piping connected directly to the pump."
JJ Very good info on the pumps ,, question,, to get to the tank did you cut or are there some panels you can take off??,, I'm in storage and can not look at mind right now... Looking at your pics I think I can see you took them from inside the storage cabinet Ron D had some good info on pumps also and had looked at his solution,, question If working on the water pump (nice area to work in hehe ) I know some people have taken the bed platform off to get to that area,, wondering if that would be advisable... I have already prepared about 5 projects and was not going to do the water pump yet,(I have a list of things that I see like the hoses for the pumps) but may change my mind,,,If I keep adding projects I may have to keep the Beast here all summer yikes.. I'm getting out of storage next week to do my list of projects, BH is going out of town( new grandson coming) and knows not to be around when working and talking to myself hahadavid sparks2008 PC 2350 HoustonPS We finally got some good rain today thank goodness been dry here for about 6 weeks.Yipeeee
You asked what size accumulator tank I used and where I put it. I can't remember the size, but it was the largest of the 2 that Home Depot sells. I took out the bass speaker under the bed, built a cradle and strapped the tank in. The speaker was too loud when one person was listening to surround sound and the other was in bed, so it wasn't missed. Someone else asked about access to the pump--the bed board on my PC was cut in half--the head board piece was screwed down, the foot board piece was not so it was easy to gain access. The space on my current 2552 was more limited, so I had to use the smaller tank. Both tanks significantly reduced the pump noise and run time. Installation was simple and inexpensive--two things I like.