First and Hopefully, Only Complaint

memtb wrote:
We’ve only had our “C” (Ford 450 chassis) for a year....but have a repetitive problem. When leveling (HWH system), on uneven terrain (we boondock).....we get enough frame “Flex” that the door jambs, and we cannot open or close! Does anyone else experience this issue?
We can solve the problem, by driving up on blocks....but that kinda defeats the reason to have a leveling system!

That should never happen if your HWH system is functioning so as to be "complying with the requirements of geometry". Trying to twist the coach structure is a no-no for many reasons.

Whether leveling side-to-side or front-to-back - the lift should ALWAYS be the same amount and at two corner points so the supporting frame under the coach is not twisted.

For example:

For side-to-side - always correct by lifting both the front and rear tires on the right or left side by the exact same amount.

For front-to-back - always correct by lifting both front tires or both rear tires by the exact same amount.

Doing the above keeps the frame under the coach from twisting.

I use this approach all the time but with wooden blocks. The principle should be the same with a properly designed and operating automatic system.

Where an automatic system really shines is if coach leveling requires both side-to-side adjustment AND front-to-back adjustment. It was a challenge at first, but I finally figured out to handle this complex leveling situation using wooden blocks ... and hopefully our coach structure hasn't been compromised over the years from twisting at campsites.

My 28-year-old RV has HWH kick-down jacks, but they are all independently operated.

But yes, the RV does flex from them.

Steve

Didn’t know anything about the HWH, when we bought....a selling feature for us! Now wish that it came without....I’d have put on a Bigfoot System.....have one on our 5er and love it. But, can’t blame the HWH for this! We can get it level by using manual mode and a little “jockeying” the rig around a bit (can’t get “auto” to function properly).....verifying with a level, but have the door issues!
It appears, though “not” proven.....that it is frame flex!

Our HWH is manual and always moves two jacks at once. Supposed n to prevent that twisting. It does NOT. I sight down the side, see how racked it is, and try to adjust. Coach door still works though. At this point I'm usually frustrated since I want to run one jack but HWH runs two. And, ours are kickdown, so by then the jack I had to pull to vertical manually now needs it again.
Our system's one PITA. I truly hope you work yours out and it does well for you.

My TT will do that sometimes.
I will look at the door gaps to see which way it's out a bit, then tweak one of the jacks to "twist the unit so it opens ok.

Do you level side to side before front to back ?

If your HWH system is automatic, have you calibrated the HWH level sensor.

Said another way, when you automatically level, ARE you level?

Sensor adjustment is quick and easy and only requires a screwdriver.