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Old 08-11-2013, 09:08 AM   #1
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Hydraulic Jacks

I have equalizer leveling system on my MH they are manual they work good
only thing is they make a loud noise when extending or retracting. Could it be dry seals? I sprayed the cylinders with WD 40 but not make much difference. Would like suggestion as to what cause this and how to cure the prob.

Thanks in advance Joe
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Old 08-11-2013, 09:24 AM   #2
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Please,,, WD 40 is not a lubricant..WD 40 is only to loosen frozen nuts.. Find your brand of jacks, Look up the web site.. They Probably, recomend transmission fluid rubbed on the jack cylinders. The jacks might also have grease certs. Some owners also use spray silicone.
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Old 08-11-2013, 09:41 AM   #3
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Originally Posted by donhoward49 View Post
Please,,, WD 40 is not a lubricant..WD 40 is only to loosen frozen nuts.. Find your brand of jacks, Look up the web site.. They Probably, recomend transmission fluid rubbed on the jack cylinders. The jacks might also have grease certs. Some owners also use spray silicone.
Contrary to popular belief, HWH says to use WD40. 6 OF 14
  1. Is there something I can lubricate my jacks with to make them retract faster? How long should it take to completely retract my jacks?
    Lubricating a jack rod can help with retraction time but if lubrication is necessary, there is most likely a problem with the springs or the jack itself. The only thing HWH recommends to use is WD-40. Refer to the following link for jack maintenance information. [COLOR=rgb(0.000000%, 0.000000%, 100.000000%)]http://www.hwh.com/ml47149.pdf. [/COLOR]The following link gives detailed information about allowable jack retraction times. [COLOR=rgb(0.000000%, 0.000000%, 100.000000%)]http://www.hwh.com/mi9553.pdf [/COLOR]
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Old 08-11-2013, 09:51 AM   #4
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On our last MH, there were grease zerks on each leg that needed to be lubed. Did you check to see if there are any zerks on your system?
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Old 08-11-2013, 11:07 AM   #5
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I have Big Foot levelers and they recommend silicone spray on the cylinders.

WM
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Old 08-11-2013, 11:17 AM   #6
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Originally Posted by donhoward49 View Post
Please,,, WD 40 is not a lubricant..WD 40 is only to loosen frozen nuts.. Find your brand of jacks, Look up the web site.. They Probably, recomend transmission fluid rubbed on the jack cylinders. The jacks might also have grease certs. Some owners also use spray silicone.
donhoward

Please,,,???
WD-40 is recommended for RVA jacks!

Here is a quote from my RV manual:
"When jacks are fully extended, occasionally wipe dirt from the jack ram/rod. This will help lengthen life of jack. WD-40 will serve as a solvent as well as a lubricant".

Nuff said.

Mel
'96 Safari, RVA jacks
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Old 08-11-2013, 11:32 AM   #7
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Ok I was wrong.. Not the first time.
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Old 08-11-2013, 11:41 AM   #8
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If your jacks have springs, that is likely the source of the noise. My springs make a racket. Especially the one that rubs.
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Old 08-11-2013, 11:53 AM   #9
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Power Gear recommends silicone spray.
Once a week if near salt water.

I found out. Use it right after a Hurricane, also no matter how far away from salt water. :(
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Old 08-11-2013, 12:12 PM   #10
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Funny there are millions of hydraulic rams on equipment all across the nation and they never spray or wipe anything on them and some of them sits for years idle before being put in service again...just saying
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Old 08-11-2013, 12:14 PM   #11
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I found out. Use it right after a Hurricane, also no matter how far away from salt water. :(
Better yet, use it before the hurricane to make the salt water droplets run right off. Come to think of it, why is your RV in a hurricane to begin with?
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Old 08-11-2013, 12:27 PM   #12
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Could be an air bubble in the system. My Lippert Jacks call for silicon, not WD-40. According to this pdf, equalizer says WD-40.

Click here: http://equalizersystems.com/files/shared/service-documents/Required_Maintenance_Items_Hydraulic_Systems.pdf
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Old 08-12-2013, 08:27 AM   #13
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Come to think of it, why is your RV in a hurricane to begin with?
The National hurricane center had said it was going to come on shore around 250-350 miles North of my location. And will only be a category 1 where I was at. And they usually travel North after hitting land.

Only way to drive the MH out was going North through that area.
And there was no way to move South either.

The National hurricane center was wrong on the prediction.
Where it would land and on the category 1.

I was 25 miles West of Miami International
Peak Wind Miami International 67 mph at 8:30 AM, 92 mph at 7:56 AM

I had put the slide in and all awnings up. Then went to a friends S & B.

Wilma(Oct. 24th 2005) hit the area around 5 AM with high winds blowing transformers out all around, poles and tress down.
Wind didn't stop until around 2 PM.

The MH only lost one window awning ripped off, patio awning roll end twisted off from end cap. I had a no unroll lock on it. Both Max covers and one vent cover under the Max covers.
But it was still sitting on all 6 tires.

I didn't think about the jack rods until later as I had sprayed silicon on them as I do every winter about one month earler. The rear rod on the west side was the worst. It had rust and pitted some. Still pitted to this day and has never leaked.
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Old 08-12-2013, 09:03 AM   #14
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The 'prediction' was that Wilma would make landfall at Palm Beach and continue straight west to the Gulf. Then she made a sharp left to Miami. I remember standing at the helm in Key Largo with 75 MPH in my face thinking "Disney does not have one of these".

I remember how much salt we washed off the boats and vehicles after that one. Glad to hear you made out much better than many in the Miami area.

On-topic moral to the story: Keep your jacks lubricated at all times.
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