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Old 11-14-2011, 09:17 PM   #1
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HWH Jacks---Problem Resolved

I have a DP coach and forever have had problems with the jacks retracting.

I bought new springs, this helped some, but I still had to go out and pry them up.

My RV tech said to spray them with WD-40. This helped some, but I still had to pry them up with my flat point shovel. My DW got very frustrated with this.

Let me point out that we normally volunteer in state and federal parks and tend to stay in a single place for 1-2-3 or 4 months.

I had downloaded everything I could find. All of the forum results I could search out.

Then one day I was re-reading a "Helpful Suggestions" PDF that I had down-loaded off of HWH's web site. It suggested that we spray the jacks with a hose periodically, as well as spraying them with WD-40.

WA-LA! This was the key, for me anyway. Now before I prepare to punch "Store" I go out and wash off the jacks the jack with a water spray, then punch the "Store" button. They will go right up!

I have used this procedure the past three times, and it works great!

Try it! You will like it!
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Old 11-15-2011, 05:31 AM   #2
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Hi MikeandClaudia,
Thanks for the tip. Do you use cold water or hot water? My thought would be cold water would work best.
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Old 11-15-2011, 07:24 AM   #3
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I just use a hose-end sprayer coming from the regular hose-bib. My theory is that it just washes away the grit, sand and dust that accumulates on the cylinders.
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Old 11-15-2011, 08:14 AM   #4
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My jacks were a retraction problem for 3 to 4 years. Tried all the fixes short of spring or cylinder replacement. WD-40 worked if I treated the jacks every couple of uses, but that was an irritation having to do it so often. So prior to replacing jacks, I decided to spray the jacks with some Trans-syn transmission fluid that I had on hand.

Wow! That worked great! I've only treated the jacks 3 times during the past year. Twice on our 5 month trip this summer and fall. One of those times they did not really need it- I just needed something to do.

Now the jacks store in a very reasonable time. No long waits for the sytem to store and shut down.

Just my 2 cents worth.
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Old 11-15-2011, 08:28 AM   #5
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Mike,
Do you have the link to the "helpful suggestions PDF"?

Thanks,
Mark
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Old 11-15-2011, 09:40 AM   #6
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I had the same problem. Mostly with 1 jack. Tried the WD thing and it worked for afew times. Then I had a brain fart. I put my jacks all the way down and coated them with Lucus motor honey, you know that real sticky stuff you can't get off your hands after you use it. Run the jacks back-up and WOW!!!!! Most of the product was wiped off but enough got past the wipe seal to lubricate it and they have work perfectly since.
Ron
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Old 11-15-2011, 10:40 AM   #7
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Quote:
Originally Posted by Brigadoon View Post
My jacks were a retraction problem for 3 to 4 years. Tried all the fixes short of spring or cylinder replacement. WD-40 worked if I treated the jacks every couple of uses, but that was an irritation having to do it so often. So prior to replacing jacks, I decided to spray the jacks with some Trans-syn transmission fluid that I had on hand.

Wow! That worked great! I've only treated the jacks 3 times during the past year. Twice on our 5 month trip this summer and fall. One of those times they did not really need it- I just needed something to do.

Now the jacks store in a very reasonable time. No long waits for the sytem to store and shut down.

Just my 2 cents worth.

My '02 Suncruiser is 10 YO this month. I have 85,000 miles on it and have been in over 300 campgrounds. I have never put anything on the jacks (as is the recommendation from HWH) and they have always worked perfectly.

YMMV
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Old 11-15-2011, 01:03 PM   #8
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hamguy,

I wished mine were trouble free such as yours. We have 61k miles on this one and had 23k miles on our previous mh (2003). The system on the '03 was trouble free. Not so with the '05. When it was 2 years old the shuttle valve went. Sometime after that the left rear jack would not fully retract. A few months later the right rear jack would not fully retract either. First I used a bar to apply some upward assistance to attain fully retraction. Then the front left jack started to not retract. At that point I called a local HWH tech who inspected the system and declared that the only cure was new cylinders. At several hundred dollars per cylinder plus labor. Hmmmm....

I called HWH. They gave me a couple of suggestions. I tried them with little effect. So they said I probably needed new cylinders. Hmmm...

Decided to do the wd40 thing. Worked but I had to get down on the ground to wipe off the rams and reapply the wd40 every other retraction. I stuck with that for a year and then it got real old.

So, since I was on the verge of buying new cylinders (or at least new springs), I decided I had nothing to loose by trying transmission fluid on the rams. Bingo- has been working like a charm for almost a year. Will continue to do so as long as it works.
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Old 11-15-2011, 01:22 PM   #9
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I have a similar problem with one jack and have learned that I can soak a paper towel in Transmission fluid and wrap it around the ram while I am storing the MH for longer periods of time. When it is time to move, I remove the paper towel along with any grit or dirt that may have splashed or blown onto the ram. The jacks all work well if I do this.
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Old 11-15-2011, 08:42 PM   #10
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I'll keep the water method in mind. To those who use other methods are you worried about dirt adhereing to the shafts from the oil you put on them and then the dirt scoring the seals when the jacks retract?
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Old 11-17-2011, 08:32 AM   #11
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If I've been sitting awhile, I wipe off the rams prior to treatment or retraction. I use a white paper towel and have been inspecting it after wiping and have not really found much dirt. I think the vast majority of the trans fluid is wiped off during retraction leaving only a thin film coating.
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Old 11-18-2011, 09:14 AM   #12
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Am I the only one with Zerk fittings on my jacks and grease them 2 times a year?
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Old 11-18-2011, 11:18 AM   #13
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Many years ago (too long to mention) while attending aircraft maintenance school, I learned to clean the polished surface of retraction mechanisms with the medium in which it operated. I periodically wipe the jack polished cylinders with trans fluid - which is used in the HWH hydraulic system.

My first experience with HWH jacks began in 1979, and I have never had a problem with slow or non-retracting jacks.


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