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Old 07-05-2015, 10:42 AM   #1
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Winnebago Owners Club
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One rear jack wont retract

Hello All

My drivers side rear leveler wont retract all the way .It starts up but about 3/4 the way up I have to pry it up enough to get the alarm to turn off.
It has been doing it since I brought it ,so its nothing new .Just getting tired of it,finally.
Where would I start trying to fix this myself ,I am familiar with hydraulics so I know how it supposed to work .Valve energized,spring pushes oil out of cylinder back to tank. Just don't know where to start.
Or am I better off taking it to a shop.



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Old 07-05-2015, 12:01 PM   #2
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Perhaps a shot of silicone lubricant would help? We've had that issue in the past, and that has always done the job. I spray the jacks regularly each year to keep them functioning properly.

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Old 07-05-2015, 12:47 PM   #3
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You don't say what brand of levelers you have, but assuming they are HWH.

Do your springs have tapered or square ends? HWH came out with stronger springs to help the problem you describe. The stronger springs have tapered ends.

In the meantime, try wiping down the shaft of the problem jack with WD-40, then dry it off thoroughly before trying to retract. The WD-40 is meant as more of a cleaner than a lubricant. The shafts don't need lubrication. The part up inside the cylinder is completely surrounded by oil.

The other thing that can happen is the O-ring at the top of the shaft can get twisted or the shaft can get bent, which adds too much resistance for the springs to overcome to return the jack. The jack can be rebuilt to replace a twisted O-ring, but it will probably have to be replaced if the shaft is bent.

I think rebuilt jacks are available from HWH, or a local hydraulic shop (the kind that services hydraulic cylinders for construction or farm equipment) may be able to do it.
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Old 07-06-2015, 05:09 AM   #4
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My left rear will be balky from time to time. Good advise using WD40. I would add that I extend my jacks as far as I can without lifting the coach off the ground, then spray down the shafts and really wipe them down good. Any left over WD40 will be like a dirt magnet. A couple times a year I'll also use a Q-tip to get up inside. I've gotten an accumulated bunch of gunk out that way also.
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Old 07-06-2015, 09:43 AM   #5
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if you have good springs, the cylinder is going to need rebuilding. if its hwh, go online and request a rga. there is a section of the technical service where you can do that
do that, and its faster than waiting for a phone call. send it in and have it rebuilt.
if you can do the removal and reinstall its a cheaper way to go.
power gear may have a different process, but even then it will need new seals, if it can be rebuilt. some power gear cylinders can only be replaced.
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