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Old 10-05-2014, 05:15 PM   #1
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Leaking Power Gear jack

One of my Power Gear rear jacks has a slow leak. I see about 1/8th cup of red hydraulic fluid on the ground after use. All other jacks are fine.

Does anyone know what the fix is? Can I do it myself? or remove it myself then take it in somewhere to be fixed or ideally there is some kind of miracle product to fix the leak?

Thank in advance.
John
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Old 10-05-2014, 06:43 PM   #2
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Not that bad a job ,power gear web site has a great write-up. I took one of mine off and had it rebuilt for 75.00$Plus the kit(200.00 I think) .at the local tractor shop.
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Old 10-05-2014, 07:00 PM   #3
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Some Power Gear jack legs are rebuildable and others are not. Does yours have a grease fitting on the lower part of the leg? Have you tried to grease it?

When mine went bad it leaked a LOT. I removed it and found the leg cylinder had "chatter" marks on it like the previous owner tried to drive off with the jack legs down. I had to replace it with a new one for $800 parts cost.
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Old 10-05-2014, 10:01 PM   #4
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Thanks - Yes- mine does have the grease zirk at the bottom - So does that mean that it is or is not rebuildable?

Also - what is involved with removing the jack from the rig - Is there a lot of spilled oil involved?
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Old 10-05-2014, 10:52 PM   #5
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I can only speak for my coach, and the right rear jack. (the other jacks on my coach look much easier to remove )

First if you haven't already greased the jack Zerk fitting do it now and see if that solves the leak. I think P.G. recommends lithium grease, but check the manual to be sure.

There were 6 - 5/8 inch bolts to remove. I had to use a combination of every tool in my arsenal to reach them and every 4 letter word I could conjure up. It seemed everything was in the way. There is one hydraulic hose to remove and protect from dirt. Very little if any oil loss to this point. Now you need to drop the jack down and remove it from the underside of the coach. If you keep the hydraulic fitting pointing up no oil will be lost. Remember, the spring will keep the jack foot retracted and most of the fluid has been pushed back into the large reservoir.

Get the model and serial number off the actual jack and go to their web site and look it up. You should find if yours is designed to be rebuildable or not. If it is, Power Gear sells rebuild kits.

Now it was at this point where I found my jack was damaged and I decided to replace it.

Now you gotta remember, I replaced mine in my driveway and I'm not a spring chicken any longer. In fact, the young things at the fast food restaurants no longer ask me if I qualify for the senior citizen discount. They just take one look at me and automatically give it to me!

FAQ: Leveling Systems - Power Gear
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Old 10-06-2014, 07:42 AM   #6
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Before you go too far, Have you crawled under the coach to verify that it is the Hyd. Jack itself that's leaking and not say a split fitting, or a hose itself that's leaking? Your post only says that you find oil on the ground.
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Old 10-06-2014, 09:29 PM   #7
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Quote:
Originally Posted by John Stott View Post
Thanks - Yes- mine does have the grease zirk at the bottom - So does that mean that it is or is not rebuildable?

Also - what is involved with removing the jack from the rig - Is there a lot of spilled oil involved?
As long as the shaft is not pitted or shows evidence of damage it is rebuildable. As already mentioned there should be little or no oil spillage just make surd the jack is fully retracted.

Chuck
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Old 10-06-2014, 10:10 PM   #8
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I had the left rear jack on my coach leak a small amount of oil two years ago. I extended the jacks all the way used a nylon brush to gently clean the lip seal on the cylinder. I then worked the nozzle of a can of silicone lube under the lip seal and sprayed the silicone under the seal while moving the nozzle all the way around under the seal. A lot of junk came out, I did it several time until the amount of junk coming out reduced. Wiped down the shaft and sprayed it with silicone. Then I retracted the jacks and did the above procedure a few time on each jack. The jack never has leaked again. I did order the seal kit, just in case I needed it.
I tried to attach the file that has the instructions on how to rebuild the jack but it's over the 3 MB limit. You download the file from Power Gears web site.

Chuck
Attached Files
File Type: pdf Power Gear Parts and Service Manual.pdf (1.68 MB, 72 views)
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Old 10-07-2014, 08:17 AM   #9
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Great comments everyone.
QUICK QUESTION: How often and how much grease do you put in the Grease zirk? Also do you grease it retracted or extended?
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Old 10-07-2014, 08:29 AM   #10
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Quote:
Originally Posted by John Stott View Post
Great comments everyone.
QUICK QUESTION: How often and how much grease do you put in the Grease zirk? Also do you grease it retracted or extended?


1. Check the fluid level every month. Fill the reservoir with the jacks in the fully retracted
position. On vertical pump assemblies, the fluid should be within 1/4 inch of the fill port lip
and checked only with all jacks retracted. On horizontal pump assemblies, the fluid level
should be up to the weep hole on the side of the reservoir tank and checked only with all
jacks retracted.
2. Change fluid every 24 months.
3. Inspect and clean all hydraulic pump electrical connections every 12 months.
4. Remove dirt and road debris from jacks as needed.
5. If jacks are down for extended periods, it is recommended to spray exposed chrome rods
with a silicone lubricant every seven days for protection. If your coach is located in a salty
environment (within 60 miles of coastal areas), it is recommended to spray the rods every 2
to 3 days.
6. Jacks equipped with grease fittings at the bottom of the cylinder should be greased with
light weight lithium grease using a hand pump style grease gun only. 2 or 3 pumps should
be sufficient for every 20-30 uses.
7. Do not use a high pressured was/rinse system on any of the components associated with the
leveling system. This includes the pump, pump motor, wiring harness, control and touchpad.
THE USE OF A HIGH PRESSURE WASH/RINSE SYSTEM WILL VOID THE WARRANTY.


To answer your good question, I personally don't think it makes any difference weather the legs are up or down. The grease just coats/lubricates the seal.
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Old 10-07-2014, 08:50 AM   #11
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John, Bigd9 has great advice on this. I have removed two of my cylinders and had them rebuilt at a local hydraulic shop for around $130.00 each. They are a bear to remove as Bigd9 mentioned, I ended using an 18" breaker bar and a 3/4" impact socket because it was much heavier duty socket. I placed a floor jack under the jack pad so that I could lower it down to the ground as it weighs about 55 lbs., used the same method when putting back into place. I too am not a spring chicken but I got it done. Unfortunately after replacing both rear jacks, the hoses started to leak and replacing them was actually worse than the jacks and more expensive. Since your MH is a 2005 I doubt that they bad. Good luck with your project and keep us posted on your progress.
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Old 10-07-2014, 08:36 PM   #12
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Thanks guys, I really appreciate the good advice and feedback. So I spoke with a local hydraulic shop and the manager discourage me from rebuilding it, He said that it would cost about $350 -$400 and he was afraid that any imperfections would result in seepage. I am not sure what new jacks cost but I would guess about $800 or so. I will try some more hydraulic repair shops to see what they say.
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Old 10-07-2014, 09:47 PM   #13
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Hi John,
IF your jacks are rebuildable, and IF you can get the kit, and IF you are a Saturday mechanic type, you can do it your self. Power Gear has a set of instructions and I think there are videos online showing how to do it. I was planning to rebuild mine, but when I saw my chrome piston all scratched and scored (looked like someone took an ax and chopped marks into it) I knew I needed a new one.

Another idea is a used jack. I believe when I was in the market, a used one was half the price of a new one. There are several good places around the country. The one I use is:

Search Used RV Parts And Accessories | Visone RV Monaco Parts Dealer | visonerv.com

Because they are close to me. They are a big outfit and ship everywhere.
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