Community Forums

travelrider7 · 03-19-2025, 10:19 PM

I have a 20 year old Country Coach and I'm not happy with various aspects of the ride (sway, proposing, elephant walking, etc). As one measure to improve the ride, a suspension shop recommended motion control valves but they recommended only putting them on the rear air springs, and so that's what I did.

Now, my HWH air leveling is working fast on the front and painfully slow in the rear. I am having to dump the bags manually and do so by repeatedly resetting the HWH and dumping again and again until I get the coach all the way down. Then I can level, but I'm having to manually level. It seems the HWH system is thoroughly "confused" by these motion control valves.

Any thoughts? I know what's causing it, but I don't know the cure as I am very happy with the results of having the motion control valves on the motorhome. Would adding them to the front and therefore slowing down the front dump equally help the HWH system? Is there a way these can be installed that utilizes them for drive mode but bypasses them for leveling (I doubt it, but I thought I'd ask)?

Looking for suggestions and whether or not anyone else has had this experience and how you ended up dealing with it.

Thanks!

jacwjames · 03-20-2025, 11:54 AM

what kind of motion control valves did you install.

Here is a site that has the installation instructions for theirs.

https://sourcerv.com/valves
You could call them and ask if they recommend installing on all 4 corners.

Jzack · 03-20-2025, 02:55 PM

Yes, you could by-pass them with two "T" fittings and an electric solenoid valve for each side. Just flip the switch for the solenoid when it comes time to level. But I'd call the manufacturer of the MCUs first to see if they have any ideas. You can't be the first customer to have this problem.

azpete · 03-21-2025, 08:53 AM

there are some systems that just dont play well with other systems.
slowing air flow to just front or rear would definitely effect the operation of hwh.
i dont know if adding the motion devices to the other two corners would help, but it seems that at least it would equalize the air flow.

dons2346 · 03-21-2025, 09:16 AM

II have the Source Engineering motion valves (4) on my coach and have no problem dumping air or leveling. I usually do not dump if not staying in one spot veryy long. I pull in and let the HWH system level the coach and then turn the system off

travelrider7 · 03-21-2025, 09:58 PM

Quote:

Originally Posted by dons2346

II have the Source Engineering motion valves (4) on my coach and have no problem dumping air or leveling. I usually do not dump if not staying in one spot veryy long. I pull in and let the HWH system level the coach and then turn the system off

Do you have them on all four corners?
Does your air dump quickly or slowly?

If I'm not mistaken, the Source Engineering ones are designed to only restrict flow in one direction. Is that correct?