|
|
Post by halcareric on Jun 21, 2022 9:00:06 GMT -5
Is it normal for ONLY one front jack to come up at a time when we're hitched up to do a pull test? Seems when we want to raise the FRONT jacks up a few inches, we can ONLY get ONE jack up, then the other front jack comes up. I want BOTH jacks to raise up at the same time, which makes COMMON sense.
Is there an issue we need to look into??
Thanks.
Durango Gold 391RKF
|
|
|
|
Post by jetzen on Jun 21, 2022 17:13:07 GMT -5
Hydraulic jacks raise and lower (not necessarily level) in sequence... so do the hydraulic slides.
The short version:
That is the way they are mechanically/electronically programed.
Hydraulic fluid will fill the line and ram of the shortest run first until pressure is sensed, then the next shortest run
on the jacks should be short run first, long run last.
On the slides short ram first then the long ram.
There is more to it than just that but that is its normal operation.
|
|
senior
Weekender RV’er
2022 KZ280TH
Posts: 80
|
Post by senior on Jun 22, 2022 7:36:59 GMT -5
You might get the other one to come up if you only need a couple inches by stepping on the one that comes up 1st, that may be enough resistance to get the 2nd one moving.
|
|
|
|
Post by halcareric on Jun 26, 2022 9:03:35 GMT -5
Thanks for the replies.. Just seems odd for "these" to do it when I've watched other brands of 5th wheels with the same jacks operate different as far as the fronts go. I've driven semi's and know the importance of doing a "tug test". Even if those jaws "look" like they're closed does NOT mean it's locked. Doing the tug test with one jack still down isn't wise in my view. If these are "designed" like this, it's a poor design.
|
|
|
|
Post by nvguy on Jun 26, 2022 22:57:54 GMT -5
This is long shot, but I would cycle the landing gear all the way up to all the way down. Could be some air trapped in the slower ram or the slower ram has tighter seals and takes a bit more pressure to move it.
|
|
|
|
Post by Chuck on Jun 30, 2022 10:45:04 GMT -5
Our front jacks have always rised 1st on the right an then on the left, same going down, 1st on left closest to me an 2nd on right. I also spent many mile in semi's an do tug test, I was sort of un-easy at 1st when we did a tug but back 1st then pull lightly forward watching to make sure trailer dozen't slide off hitch ... I have dropped a 53ft box trailer only one time an it's no fun, dropping your 5th wheel on the rails of a pickup is even worse an really no fun ... I also put a lock on my hitch once hooked, one never knows if some horse's behind pulls your pin just for fun Ugh !!!! |
|
|
|
Post by halcareric on Jun 30, 2022 17:53:41 GMT -5
@ Chuck
Well thats just another poor design of LCI's to add to my list then. I also put a lock on the hitch. I do a visual anytime we stop just to double check all is good.
Thanks.
|
|
|
|
Post by Edd505 on Jun 30, 2022 19:56:14 GMT -5
@ Chuck Well thats just another poor design of LCI's to add to my list then. I also put a lock on the hitch. I do a visual anytime we stop just to double check all is good. Thanks. Poor design, it's hydraulics and it will always go to the least resistance, closest. Wheres your pump mounted tot he right side, it builds pressure and moves to the left side, same with the slides. The locks to stop people that think it's funny to see someone have a problem, the lock stops that "practical joker." I physically look at the jaws to see they are closed around the king pin, simple to see with the B&W. |
|
