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Old 01-15-2019, 04:08 PM   #1
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Stuck Jack

One of my jacks will only come halfway up. Passenger/rear. Any suggestions or recommendations?? I leave Thursday for ACA rally in the desert so I need to get this fixed.
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Old 01-15-2019, 05:00 PM   #2
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Who is the manufacturer of your "Jacks"? Are they electric or are they hydraulic? What have you done so far to attempt to fix, and what was the result?
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Old 01-15-2019, 05:05 PM   #3
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Search f104 stuck jack and you may get a quicker solution. If hydraulic, springs retract them (or not) and they can be pried up with a large lever. My auto-level system, on occasion, won't retract one jack, so I use manual UP.

A light coating of the shiny jack shafts with silicone spray really helped their operation, especially retraction, while not gumming up as any oily spray will. Per my engineer bro-in-law, longtime RVer with the same system, I use the dry silicone ( which HIS manual states) versus WD40 (many here state). WD40 is an oil spray.

They work much better now, w/o new springs, too.
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Old 01-15-2019, 05:08 PM   #4
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I have this happen once and a while. I extend them all and spray with WD40 don't wipe and retract. If it still doesn't go up I use a 2x4 with leverage to pressure it up with the Hwh in the on position. Then run them down and up again.
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Old 01-15-2019, 05:39 PM   #5
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Most likely culprit is weak springs. If youíve had them extended for any length of time in Indio they could be a bit crusty. HWH recommends spraying with WD40, while they are extended, to ďcleanĒ and then wipe off excess. The hydraulic fluid in the jack acts as a lubricant for the piston. After that, use the lever technique if necessary to force it up. If that doesnít work itís probably bent. Take a wad of cash to Quartzite where the solution awaits.
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Old 01-15-2019, 06:10 PM   #6
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I agree with the WD40 and 2X4 solution. Happens on occasion and this fixes it on my coach.
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Old 01-15-2019, 06:26 PM   #7
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Oh! And the HWH has to be in the STORE mode for the 2X4 or other lever to work. Still doesn't go up easy.
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Old 01-15-2019, 07:14 PM   #8
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I have one that occasionally stopped half way up and it's the only one that had new springs. For me it wasn't the springs. A good cleaning of the shaft with wd40 and problem solved.
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Old 01-16-2019, 02:34 PM   #9
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"Big D9; Your intent may be to help, but the nature of your questions reveals the reason why we discourage people who own other types of RV's from involving them-selves here. You obviously don't understand Alpine coach systems, so please don't offer advice on them.
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Old 01-16-2019, 06:22 PM   #10
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When I spray wd-40 on mine they go up for a while then in a couple weeks they stick again. For this reason I feel strongly that my shafts are not bent. I replaced all with new springs but same problem.


I heard that the seals get stiff and new seals are now the solution. My seals do not leak, so until they do, my solution works pretty darn good. I carry a $69 aluminum floor jack Harbor Freight and push the ones that are slow, up.
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Old 01-16-2019, 06:26 PM   #11
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Quote:
Originally Posted by Dudley do-right View Post
"Big D9; Your intent may be to help, but the nature of your questions reveals the reason why we discourage people who own other types of RV's from involving them-selves here. You obviously don't understand Alpine coach systems, so please don't offer advice on them.

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Old 01-17-2019, 12:53 AM   #12
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I have just the opposite problem. After driving for an hour or so I get an alarm and the HWH panel shows one jack down...always the same one. I hit the button once and then STOW and it comes right back up. Anyone have this happen, or ideas about the reason and the fix?
Thanks for any guidance.
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Old 01-17-2019, 08:31 AM   #13
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...help us help you--add your year and model of Alpine to the sig block so we know your coach when you post. Many older Alpines have this issue--often its the jack next to the radiator stack. Heat build up from the engine tends to expand the fluid in the jack and push it down a bit. Tip--always let the HWH system complete its auto store function before you start the engine to leave in the mornings. New springs may help but probably not.
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Old 01-17-2019, 09:55 AM   #14
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I use Corrosion-X for the sticky jack. Extend jack, clean it w/C-X & scrub the C-X off. I only have to do it every 18-24 months. On mine I can see where the annular mark is where the crud sticks. Might also try wiping off the seal lips when cleaning so treatment lasts longer.
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