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-   -   Front jack issue - Buying decisions (http://www.thorforums.com/forums/f29/front-jack-issue-buying-decisions-12735.html)

RVStrayKatz 06-24-2018 03:33 PM

Front jack issue - Buying decisions
 
Hi all;

Just in the process of selecting / buying our DRV and have a little concern regarding the problems with the hydraulic leveling system, specifically the front jacks on what appears to be 2015 to 2018. I have read a little on the forms on this issue but to date have not seen a good writeup of what the exact problem is and what the fix involves. Some folks report that Lipert has replaced the components under warranty while others seem to have struggled to get the issue covered. If there are any owners who can fill in the blanks on this issue it would be much appreciated.

Thanks,
JM

juicesqueezer 06-24-2018 04:28 PM

We have a '14 and thought we had an issue with front jacks, but come to realize it was only low on hydraulic fluid. The level needs to be between 1/2 inch and 1/4 inch from the fill cap. Fixed our problem.
I believe that the biggest problems have been with leaks on either the lines themselves or the seals in the jacks.
Keep in mind, that many fifth wheels have hydraulic jacks as well.
Personally, I would not let that deter me from a purchase if all else is a plus. :thumb:

Bobi, Dick and Ruby McKee 06-24-2018 04:34 PM

JM There are thousands of the "problematic" legs on rigs. They are the ones with the large steel tube over the ram. They no longer use this system. We have the old system and have had no problems. For the three years we have had our rig I have talked to everyone I see with the "old" system and none have had any problems. With that being said we are headed to Roberts RV in Indiana to have ours rebuilt before we have any problems.

According to Robert the problem with the the rams is that when they weld the mount on to the tube if the welder is not careful the too much heat is applied and it warps the tube. The warped tube along with the cheapest seals they can find results in the cylinders leaking down.

Robert says he has rebuilt approximately 700 cylinders. He first, if the tube is warped, straightens the tube, hones the cylinder (which he says he has never fond factory hone marks in a tube) and then installs high quality seals. He has never had one fail after he rebuilt them.

Although we have had not problems, as I stated in a previous post, I prefer to do preventive maintenance rather scrambling to fix a problem. Dick

RVStrayKatz 06-24-2018 04:51 PM

Thanks for your reply Joe. Yes I couldn't agree more, we are committed to a DRV. We have had a 5th wheel now for several years and have learned a lot about the various companies, builds, and of course issues some minor and others major. Met some folks in NV this past winter that had to have the front jacks replaced, its a PIA when your full time. I'm big into preventive maintenance so if I can get a handle on what the problem is then i can head it off at the pass. Again , thanks for your reply.

Cheers

Cummins12V98 06-24-2018 07:52 PM

Quote:

Originally Posted by juicesqueezer (Post 127661)
We have a '14 and thought we had an issue with front jacks, but come to realize it was only low on hydraulic fluid. The level needs to be between 1/2 inch and 1/4 inch from the fill cap. Fixed our problem.
I believe that the biggest problems have been with leaks on either the lines themselves or the seals in the jacks.
Keep in mind, that many fifth wheels have hydraulic jacks as well.
Personally, I would not let that deter me from a purchase if all else is a plus. :thumb:

That's awfully high. I understand it to be 1/2" from top of container with everything retracted.

Probable does not matter.

Cummins12V98 06-24-2018 07:58 PM

The ones that have has issues are pictured first, the newer style are much better.

Mine have not been an issue and fulltiming 3 years. A friend that is a Machinist is going to rebuild this Summer.

https://i.imgur.com/OWx3gnnl.jpg
https://i.imgur.com/rR2c0QXl.jpg

juicesqueezer 06-25-2018 10:11 PM

Quote:

Originally Posted by Cummins12V98 (Post 127683)
That's awfully high. I understand it to be 1/2" from top of container with everything retracted.

Probable does not matter.

That came from the tech I called at the factory. Just repeating what he said to do and all is well now. No more issues!:bow:

rynosback 06-25-2018 10:29 PM

Quote:

Originally Posted by Cummins12V98 (Post 127686)
The ones that have has issues are pictured first, the newer style are much better.

Mine have not been an issue and fulltiming 3 years. A friend that is a Machinist is going to rebuild this Summer.

https://i.imgur.com/OWx3gnnl.jpg
https://i.imgur.com/rR2c0QXl.jpg

If you are looking at a new DRV 2018 and above it has the newer jacks as Cummins stated. I added the cat additive to mine as a precaution and things have been good. Where are you buying your DRV?

RVStrayKatz 06-26-2018 01:35 AM

Thanks for the info as it is helpful for sure. Right now we are working with Whiskey Mountain RV is Mesa, AZ. We have been looking for a one or two year old KSSB4 or Dallas that hit as many of the must haves as possible. We are currently in a 5er and F350, we just ordered a new F350 so have to wait for that to arrive and then we will be in buying mode.

juicesqueezer 06-26-2018 02:36 AM

Quote:

Originally Posted by RVStrayKatz (Post 127949)
Thanks for the info as it is helpful for sure. Right now we are working with Whiskey Mountain RV is Mesa, AZ. We have been looking for a one or two year old KSSB4 or Dallas that hit as many of the must haves as possible. We are currently in a 5er and F350, we just ordered a new F350 so have to wait for that to arrive and then we will be in buying mode.

I have heard much about Whiskey Mountain. :thumb: I'm sure they will treat you right. Congrats on the new purchase Ford as well. When you get your new beauty, please post some photos! :popcorn:

Ultratravler 06-26-2018 03:36 AM

rynosback, what's the cat additive? Thanks.

Dave

mtntrek 06-26-2018 03:56 AM

Quote:

Originally Posted by Ultratravler (Post 127963)
rynosback, what's the cat additive? Thanks.
Dave

There are several additives commonly used for "stiction" popping noises presented by hydraulic system(s) ram seals.
https://www.lci1.com/assets/content/...ic_Systems.pdf

We've had just as good as results with periodic light coating of aerosol silicone which also protects the extended rams from weather. Spray, wipe down, retract, level. YMMV.

mtntrek 06-26-2018 04:14 AM

OP, BTW: As stated above the primary offending cylinders are not being used on current models. Also, many tow-able's with the self-leveling option use the same LCI products, so it shouldn't be a DRV Suites dis-qualifier. Exercising their engineering prowess the offending models did have some advantages, longer stroke being one. Many including the rebuilt product(s) seem to perform well.

rynosback 06-26-2018 05:35 AM

Quote:

Originally Posted by RVStrayKatz (Post 127949)
Thanks for the info as it is helpful for sure. Right now we are working with Whiskey Mountain RV is Mesa, AZ. We have been looking for a one or two year old KSSB4 or Dallas that hit as many of the must haves as possible. We are currently in a 5er and F350, we just ordered a new F350 so have to wait for that to arrive and then we will be in buying mode.

If you are looking at a used unit and buying a new truck. You might want to make sure that the rig has at least 2 inch risers. As every new truck is MUCH taller then older ones. DO NOT let the dealer tell you any different. Unless you like towing nose high with not much bed rail clearance.

rynosback 06-26-2018 05:38 AM

Quote:

Originally Posted by Ultratravler (Post 127963)
rynosback, what's the cat additive? Thanks.

Dave

Dave,
I used https://parts.cat.com/en/catcorp/1U-9891
Ryan

Cummins12V98 06-26-2018 10:55 PM

This pic was taken at the factory May of 2016, they changed somewhere around that time to the new style ram.

https://i.imgur.com/xT7DPE4l.jpg
https://i.imgur.com/KbsT4Dnl.jpg

RVStrayKatz 06-26-2018 11:22 PM

As soon as we get the new Rig we will post lots of photos for sure. Thanks to everyone for chiming in, looks as though this form will be very helpful as we take on new ownership of a DRV.

RVStrayKatz 06-26-2018 11:25 PM

Quote:

Originally Posted by Cummins12V98 (Post 128113)
This pic was taken at the factory May of 2016, they changed somewhere around that time to the new style ram.

https://i.imgur.com/xT7DPE4l.jpg
https://i.imgur.com/KbsT4Dnl.jpg

We are planning a factory tour in Oct of this year so I will be sure to ask about the hydraulic jack issues and what they have done to address these concerns.


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