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-   -   Kwikee Level Best 3000 Jack Issues (https://www.irv2.com/forums/f101/kwikee-level-best-3000-jack-issues-499340.html)

DryCreek 03-05-2021 05:48 PM

Quote:

Originally Posted by Astontibs (Post 5655016)
If you buy the fittings, they are 3/8" 37 degree flare plugs. They cost about a dollar each.

Are you sure that they're not 1/4"?
They look smaller than 3/8" on my 2006 Winnebago Sightseer.
Tomorrow, the wife and I are going to pull one of them off. Next week my wife will run it into town and see if the local hydraulic shop can rebuild it. They say that if they can get the seals, they can rebuild it. But, they won't know until they get it apart.

DryCreek 03-08-2021 06:21 PM

OK, so time for our update.
While we were out taking care of business the other day, we happened to be passing through Cleburne Texas. On that route is a shop specializing in hydraulic components - Hundley Hydraulic. Way back when I had a very old tractor, I saw them quite frequently to have my lift and dump cylinder rebuilt as they each failed. So, we dropped in and explained what we had. The guy said that they probably could rebuild them, but they'd have to see them to be sure. So, the next day I set to removing one jack cylinder to send in for evaluation. My wife was assisting, so I suggested maybe remove both front ones since they were hemorrhaging the worst. Well, when it was all said and done, we had all four off and in the bed of the truck.

So, the wife drives them all the way in to Cleburne and the guy who unloaded them instantly recognized them. He said, oh, more motor home levelers. What company are you with? My wife laughed and said no company (she could have used our LLC ranch name though), just two old folks tired of leaky jack cylinders.
He showed my wife some that they had already finished rebuilding. My wife panicked when they quoted approximately $400 each, and she called me. I explained to her that the absolute cheapest I could find a single new cylinder for was $1,175, she suddenly thought four rebuilds wasn't so steep after all!

Will keep y'all updated as we go into the install mode.

Hey, does anyone know if you can drain the reservoir? I am seriously considering draining and replacing the fluid. I wonder if the PO may have used the incorrect fluid or introduced some other contaminant at some time. Why else would all four jack seals start leaking so profusely?

DryCreek 04-02-2021 08:13 AM

Rebuild complete, Install complete
 
Hundley Hydraulics was able to rebuild all four of the cylinders. One needed a new piston rod, they were able to take care of that too.

Total cost was $1,428. Installation went very well, taking us a little over 2 hours. The next step was to fill the reservoir as we cycled the jacks up and down to fill and vent the system. It took more fluid than I had provisioned for. Expect to use a gallon and a half if you drain the reservoir and refill it and all of the cylinders and lines.

Astontibs 04-20-2021 08:19 AM

Quote:

Originally Posted by DryCreek (Post 5661116)
Are you sure that they're not 1/4"?
They look smaller than 3/8" on my 2006 Winnebago Sightseer.
Tomorrow, the wife and I are going to pull one of them off. Next week my wife will run it into town and see if the local hydraulic shop can rebuild it. They say that if they can get the seals, they can rebuild it. But, they won't know until they get it apart.

I bought them in person at the local hydraulic shop so mine are 3/8". Dry Creek, glad to hear you got yours all worked out.
Update, I bought one new cylinder on EBay for $954 with shipping. I am just about ready to dewinterize my coach so I will probably be replacing the one I think is bad and getting the bad one rebuilt. I wish I had a hydraulic shop in driving distance as the shipping is a killer. SO far, I think we have identified three locations that rebuild cylinders. When I get a chance, I think I will start a thread just for rebuild shops so people have a ready source.

DryCreek 04-22-2021 07:35 PM

Quote:

Originally Posted by Astontibs (Post 5719833)
SO far, I think we have identified three locations that rebuild cylinders. When I get a chance, I think I will start a thread just for rebuild shops so people have a ready source.

That's a great idea.

I would certainly recommend the shop that did ours. They have never disappointed us in the past.

johnbell47 04-24-2021 03:08 PM

Mine are 1/4 inch flare, same as lots of air conditioning access ports. home Depot has caps and plugs, if you want to get fancy. I just taped mine up to keep the dirt out. Speaking of dirt, I fought with my jacks for two weeks after the previous owner rebuilt the cylinders and couldn't get the jacks to work, he thought bleeding or pump. The pump ran ok but I could not get the things to bleed and they barely went up and down and damn sure wouldn't lift the couch. After all of two weeks of fiddling, I found that the pick up screen in the reservoir was stopped up with junk. Cleaned it and now we work! You do have to take the pump off, and there are lots of lines and wires, so be sure to tag everything! I used key tags from Walmart. Not a piece of cake but sure was cheap.

Astontibs 04-25-2021 11:09 AM

I was wrong about the size, it is 1/4" sorry for the confusion.
Well good news bad news on my coach. I did verify that the left front jack was leaking internally. I replaced it with the new one that I bought and everything optested satisfactory. I went to look at both front jacks to make sure I had no leaks and I noticed a puddle of ATF on the right front jack. Thinking it was an old spill, I wiped everything dry and verified all the lines were tight. I then cycled the front jacks again and got a fresh puddle of ATF on the right front jack. It looked to be coming from the weld where the cylinder was repaired. I wiped everything dry again and pushed the button to stow the jacks. I ran over to the right front jack and kept my eye on the weld as the jack retracted. At the very end when the jack is fully retracted and right when the pressure spikes for a second prior to the pump shutting down I saw a drop of ATF come right through the weld. NOT HAPPY!! I have the Dover NASCAR race in 3 weeks and I want operating jacks. Needless to say the jack is sitting in a shipping box right now ready to call Custom Cylinders first thing in the morning to ship it back to them for repair. I certainly hope they will cover the shipping.

johnbell47 04-26-2021 10:53 AM

Hope you get that little weld spot fixed in time! I wanted to make sure everybody heard me when I said that MY PICK UP SCREEN WAS STOPPED UP IN THE RESOVOIR! Simple fix that took a bunch of time and worry to find!! Honestly, I think that Kwikee screwed this one up, the screen was stuffed all the way up on the pick up tube, so it could only draw oil from the very end of the screen. This is where the factory folded the screen over and spot welded it to close the end. That makes the end of the screen almost occluded anyway, It had two wire ties holding it on. I left about 1/2 inch of screen shy of the end of the tube, so there would be more screen area. You do have to pull the pump to get to one of the tank screws though. I left that one out this time, so maybe I won't have to pull the tank next time. :angel:

Dive in 04-26-2021 06:55 PM

Custom Cylinders re-built two of mine last summer and ironically I had a weld leak on one of them also. Mine was a very small leak and fortunately didn't leave any puddles of ATF. I obviously wasn't happy however and contacted them right away. They offered to fix it and ship back to me no charge but I had to pay for freight back to them. I decided to wait until winter to deal with it and now it doesn't leak for some reason?!

Dav L 04-27-2021 07:12 PM

Quote:

Originally Posted by winno (Post 5378944)
Have replace all 4 levelers this past year. There is 4 bolts that mounts then to the frame, plus the switch wiring that will need to be unplug at the top of the leveler, when you get it down un screw switch from top remove the HYD fittings and remove foot pad install all on new leveler. I received them from the Winnebago itself they were around $800.00 ea. I did see were someone cut the top off and replaced the o rings on the piston then had to have it weld up, heat is not good on o rings.

The piston is collapsed to the bottom before the top is welded. Then it's cooled. The oring never gets warm. Heck, it could be welded in a gallon of water.

onebrit 05-06-2021 06:49 PM

Onebrit
 
Quote:

Originally Posted by Astontibs (Post 5449676)
Good news bad news:
Bad news: the directional control valve did not fix the problem
Good news: I figured out what it is and it all makes sense now.

The internal seals in my right front jack failed. That explains the debris in the system when this whole mess started. I finally figured it out whne I realized I could rasie the rear of the RV and I could raise the left side of the RV but I couldn't raise the front or the right side. TO make absolutely sure, I used my hydraulic bottle jack to raise the right front and dropped that jack. I let the bottle jack go and the front of the RV stayed in the air because the valves in the manifold were keeping the fluid from escaping. Then when I tried to raise the front, the front actually dropped. This tells me that the fluid that is trying raise the RV is escaping through the blown internal seals in the right front jack and going right back to the tank. It has been a long road troubleshooting this issue, but I am certain this is the case. I thank the earlier posters who turned me on to Custom Cylinders Inc. I just spoke with them and they said they could rebuild the jack for about $300. I have one camping trip left for the season and then I will pull that jack and ship it to them for repair.

Food for thought if an internal O'Ring/ seal fails the piston can drift just by allowing the fluid to transfer from one side to another with out any fluid going back to tank. This will happen when the bottle jack lifted the coach, the coach jack is extended and then bottle jack is lowered allowing full weight of coach to push the jack down to prove it is the internal piston seals blank off the return line with a cap and if the cylinder doesn't hold and drifts down you know the internal seals are bad.
And that's your problem solved.
Hope this helps
Onebrit :)

Astontibs 05-07-2021 06:08 AM

Quote:

Originally Posted by onebrit (Post 5741089)
Food for thought if an internal O'Ring/ seal fails the piston can drift just by allowing the fluid to transfer from one side to another with out any fluid going back to tank. This will happen when the bottle jack lifted the coach, the coach jack is extended and then bottle jack is lowered allowing full weight of coach to push the jack down to prove it is the internal piston seals blank off the return line with a cap and if the cylinder doesn't hold and drifts down you know the internal seals are bad.
And that's your problem solved.
Hope this helps
Onebrit :)

Onebrit,
Actually the two way valves in the manifold seal off the lines as good as any plug in the line would do. When I jacked it up manually and lowered the jack and then released the bottle jack, the bad cylinder didn't budge at all. If the valves in your manifold are leaking, you would ave bigger problems.

Astontibs 05-07-2021 06:21 AM

I got the cylinder back yesterday, installed it and for the first time in almost a year I have a fully functioning leveling system again. I will ship my spare to Custom Cylinders probably next week for repairs so I have a functioning cylinder at the ready should another one fail. This has been one helluva experience.

Gotlost33 08-04-2021 09:18 AM

Reporting back on Custom Cylinders here. We were actually passing pretty close through the Lexington area, so decided to just drop off the cylinders rather than deal with shipping. We had all 4 cylinders leaking and went ahead with doing all 4 at once.

Floor jack and a second set of hands was a big help getting the jacks off and back on, overall not nearly as bad as I expected. I thought we had made notes on everything during the removal to make the reconnect easier, but I didn't account for the connectors on the jacks (straight vs. 90-degree). The shop removed the connectors during the rebuild and repaint and gave them back in a ziplock. I didn't realize/plan for the different directionality and ended up having to swap a pair of elbows for straight connectors on the rear jacks after they were already bolted back in. Not too bad, but easier to do right beforehand.

Overall Custom Cylinders did a nice job. Dropped them off on the way north, and picked them up a week later while headed back south (not with MH). 2 months into a trip now with probably 15+ leveling cycles and jacks are running smooth with no leaks.


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