One side slowly dropping?

[justdee]

I have a question for you experienced travelers.
Our new 310RL is parked on our new concrete parking pad and it is pretty much 100% level, front to back, side to side. When I park the RV and use Auto Level, all seems fine for the first few days. The trailer is level front to back and side to side, but I've noticed that after a week or so, it will settle a bit and the left side slowly drops. I measured it yesterday and the left side is now an inch and half lower than the right side. It doesn't seem to go any lower than that and will maintain that slope. It was parked without moving for over two months, so it didn't continue to sink. I recently moved it a few feet forward, then reversed it back to it's current position. I used auto level again, all was good. Now, three weeks later, it has gone down that 1.5" on the left side again.
Odd, normal, or something wrong?

 

[Oregon_Camper]

Guess I have never paid attention to that while ours is in our barn over the Winter. You might start an email with Alliance, just to document your issue. If I were to have this issue, I think I'd just relevel each time, especially if I never saw any hydraulic fluid leaking from lines/pump.

 

[Fishfnatic]

I have a question for you experienced travelers.
Our new 310RL is parked on our new concrete parking pad and it is pretty much 100% level, front to back, side to side. When I park the RV and use Auto Level, all seems fine for the first few days. The trailer is level front to back and side to side, but I've noticed that after a week or so, it will settle a bit and the left side slowly drops. I measured it yesterday and the left side is now an inch and half lower than the right side. It doesn't seem to go any lower than that and will maintain that slope. It was parked without moving for over two months, so it didn't continue to sink. I recently moved it a few feet forward, then reversed it back to it's current position. I used auto level again, all was good. Now, three weeks later, it has gone down that 1.5" on the left side again.
Odd, normal, or something wrong?

You might want to check your hydraulic pump area. I found a slow leak on pump block in mine and am waiting for fitting. It was tightened and still leaked. Alliance asked me if it was creeping down .It had been leaking awhile but did not see it as it was leaking slowly down to battery compartment. I also have creaking and popping and think it is jacks settling from leak even though it seems to be staying level. Have paper towel there for now. Something else to worry about on trip this week.

 

[BryanValRox]

I have a question for you experienced travelers.
Our new 310RL is parked on our new concrete parking pad and it is pretty much 100% level, front to back, side to side. When I park the RV and use Auto Level, all seems fine for the first few days. The trailer is level front to back and side to side, but I've noticed that after a week or so, it will settle a bit and the left side slowly drops. I measured it yesterday and the left side is now an inch and half lower than the right side. It doesn't seem to go any lower than that and will maintain that slope. It was parked without moving for over two months, so it didn't continue to sink. I recently moved it a few feet forward, then reversed it back to it's current position. I used auto level again, all was good. Now, three weeks later, it has gone down that 1.5" on the left side again.
Odd, normal, or something wrong?

This would fall into the something’s wrong category.
In order to sink, the “hydraulic lock” within the system needs to bleed off. The bleed off can only be the result of a few things.
Specifically,
1. a external fluid leak at a line, manifold or cylinder connection
2. a internal cylinder leak
3. a solenoid valve that is bleeding by its seat
From a ease of logistics point of view, I would check the adjustments on the Solenoid valves first. There is a small set screw in the end of each valve that needs to be Seated properly. Head out to the Lippert site and search their documents section for the leveling system installation instructions. It contains the adjust procedure.
If those are found to be set properly, I would than move to inspecting the entire system for leaks.

 

[BryanValRox]

This is the manual I am referring to.

https://lci-support-doc.s3.amazonaws.com/manuals/leveling-and-stabilization/ccd-0001530.pdf

It appears that you would need to check 3 override set screws.
1 at the front landing gear(not sure which side it is on) and two at the manifold/pump assembly.
You basically just make sure they are fully seated with “lite” turn of the Allen wrench.(Counterclockwise I believe)

 

[justdee]

Thank you fellas. I will take a look. Like I said, it doesn't continue to drop past that 1.5" mark. Seems to settle there and stay put. We leave for our first road trip Thursday. It's just a five night trip. I will try to remember to measure once it is leveled and then again before we leave to see what it has done.
Then it will be parked again for a month before our next trip. We are scheduled to attend the Texas Allie Rally in early May, do you think there will be reps there to take a look if it still persists?
The email to Alliance I can do tonight.

 

[justdee]

I could not find any leaks anywhere. I should have taken a picture of the monitor before I manually adjusted it.
The left side was down as well as the rear.
This shows its current state after I manually leveled it, first by raising the left side, then raising the front just a tad. I'll check it again tomorrow.
Maybe it's just out of calibration?
This, according to a 2' builders bubble level, is as perfectly level has I can get with the bubble level.

 

[BryanValRox]

I could not find any leaks anywhere. I should have taken a picture of the monitor before I manually adjusted it.
The left side was down as well as the rear.
This shows its current state after I manually leveled it, first by raising the left side, then raising the front just a tad. I'll check it again tomorrow.
Maybe it's just out of calibration?
This, according to a 2' builders bubble level, is as perfectly level has I can get with the bubble level.
View attachment 2984

You could solve your problem in minutes, if you check those over ride screws, if one of those is not backed out all the way, you will experience the symptoms you are documenting.
Out of calibration doesn’t cause drop, it just causes an un level coach.

 

[Fishfnatic]

Thank you fellas. I will take a look. Like I said, it doesn't continue to drop past that 1.5" mark. Seems to settle there and stay put. We leave for our first road trip Thursday. It's just a five night trip. I will try to remember to measure once it is leveled and then again before we leave to see what it has done.
Then it will be parked again for a month before our next trip. We are scheduled to attend the Texas Allie Rally in early May, do you think there will be reps there to take a look if it still persists?
The email to Alliance I can do tonight.

we will be at rally too. Hopefully get to meet you

 

[Oregon_Camper]

............ We are scheduled to attend the Texas Allie Rally in early May, do you think there will be reps there to take a look if it still persists?

As of right now, Lippert is not a vendor. The Texas Rally has secured Morryde, but they don't work on the hydraulic system.

 

[justdee]

I'll check the over ride screws. I've just been on the go the last two weeks with family in town. Dropped them off at DFW last night, and now in full prep mode to get ready for the trip on Thursday. Like Santa, making my lists and checking them twice.
I wish I had written down the numbers the last time I did the auto level to compare them to what they were this afternoon. Now I'm second guessing myself, "maybe it wasn't perfectly level to begin with?"
For now, I KNOW what the numbers are on the system, so I have something to compare to by the time we hook up on Thursday.

 

[BryanValRox]

I'll check the over ride screws. I've just been on the go the last two weeks with family in town. Dropped them off at DFW last night, and now in full prep mode to get ready for the trip on Thursday. Like Santa, making my lists and checking them twice.
I wish I had written down the numbers the last time I did the auto level to compare them to what they were this afternoon. Now I'm second guessing myself, "maybe it wasn't perfectly level to begin with?"
For now, I KNOW what the numbers are on the system, so I have something to compare to by the time we hook up on Thursday.

For Safety reasons, I would suggest checking them with the trailer supported by the truck or adequate jack stands or blocking. With all of the legs retracted or at least not supporting any weight.
This way there won’t be a lot of pressure in the system and you won’t risk any further drop if you happen to turn the screw the wrong way while the system is supporting weight.
It can be done safely, just make sure things are supported properly.
Also for what it is worth, our 310 RL has been sitting for 3 months at this point and it is maintaining its level.

 

[BryanValRox]

This might help you, it mentions how to adjust your override screws.
Again, I would ensure your coach is supported by something adequate other than the jacks before checking for this.

 

[George]

Only slightly off topic but why does Lippert say that the leveling sensor should be mounted behind the rear axle? The frame is at the same angle back there as it is if you mounted it up front where it's accessible. 🤷🏼‍♂️

 

[justdee]

All good information and I apologize for not being up to date at the moment. We've been going full speed this morning getting supplies and prepping for the trip in the morning, but I do appreciate the great input.

 

[Lantley]

Only slightly off topic but why does Lippert say that the leveling sensor should be mounted behind the rear axle? The frame is at the same angle back there as it is if you mounted it up front where it's accessible. 🤷🏼‍♂️

I'm assuming because a longer level is more accurate than a short level.
The system is trying to determine level for the entire length of the trailer.
How can you determine the rear is level if there is no sensor in the rear.
Having just having a sensor in the front will determine the front is level but does not really give any data on the rear.
Of course you could assume that if the front is level the rear has to be level, But in reality that is not always correct
Using a torpedo level at the front edge of a 6' board will not be nearly as accurate as using a 6' level on a 6' board!

 

[justdee]

I have a feeling the system is not leaking but rather the auto level did not level to 0.0 F/R, 0.0 L/R and I was too ignorant to catch that.
24 hours later and it has not changed from yesterday when I manually leveled it using a bubble level. It is still at 0.0 F/R and 0.5 L/R. With the left side being the side requiring the extra lift. I did not measure with a tape today, but I will try to remember to do that in the morning.

 

[sheath]

If it is dropping and you don't find evidence of any leak then it may be solenoid bleed. There is a YouTube video on Alliance site for level system maintenance. There are screws on the top of the fifth solenoid that sometimes needs to be tighter. I haven't seen the video in a while, but it is super easy to check.

 

[mavenius]

Only slightly off topic but why does Lippert say that the leveling sensor should be mounted behind the rear axle? The frame is at the same angle back there as it is if you mounted it up front where it's accessible. 🤷🏼‍♂️

I believe it's to account for and avoid frame twist. In my rig, there is a sensor up front and another behind the rear axle. When the front one was loose (someone over tightened the screws into particle board) it would give me "out of stroke" errors because the two sensors didn't match.

 

[justdee]

While at the Texas Rally, the tech from Hoover RV recalibrated the leveling system. I believe that was the issue.