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Old 09-05-2015, 06:43 PM   #1
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Leaking hydrulic reservoir HWH jacks

Hi,
Perhaps someone may be able to shed some light on this problem.

We have a 2012 Bay Star 2901 with the HWH hydraulic jacks.

The pump reservoir, located at the drivers side front next to the batteries, weeps constantly. Not a large leak, just enough to make a mess on the driveway.
The oil level is just below the black plug on the side of the reservior. I have dried this plug a number of times to see if it is the source. Not sure if it is. The oil level sits just below this plug.

I have looked carefully at the tank and it does not appear to be cracked.

Thanks for any help.
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Old 09-06-2015, 05:54 AM   #2
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Call HWH. Their phones are pretty busy but when you get through they should be able to help.
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Old 09-06-2015, 12:11 PM   #3
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"Woodsguy"......Typically, they slop out the lid. On mine, the screw on lid is about 2" in diameter. To slow it down, I took a piece of foam and cut out a gasket, about 3" in diameter with a hole in the center. I slip this over the cap and it catches the seepage. Occasionally, you need to clean the foam.

On my previous coach, I extend the height of the filler opening, but it used a 3/4" pipe opening. It will take a little more work to make a taller filler for this. I'll have to check if a 2" pvc thread connector will fit the threads.
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Old 09-07-2015, 06:51 AM   #4
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Just went through the same thing, hydraulic fluid leakage on the HWH manifold... it was the 3,000 PSI pressure switch leaking. Replaced the switch, topped off the reservoir, problem solved.
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Old 09-07-2015, 07:48 AM   #5
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woodsguy
check your system. from your description, you have a power gear system. if you have a vertical tank, that is likely. if it is a hwh system, call me. 602-549-3638. i work for hwh.
i do diagnostics only on this site, i do not sell parts or solicit repair work.
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Old 09-07-2015, 01:11 PM   #6
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My HWH pump did the same thing and I could never find the leak. After a few months it quit dripping and hasn't bothered since???.

Have a nice day - Darrel
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Old 09-07-2015, 04:31 PM   #7
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Leaking hydrulic reservoir HWH jacks

Hi all,
Thanks for all of the replies. Much appreciated.
I have attached a photo of the hydraulic system on my Bay Star.
It is the lower plug or seam just below it that seems to be weeping.
I removed and replaced the plug and grommet to clean them.
Still seems to be a weep...
I did notice that the hole in the plastic reservoir for the lower grommet is a bit larger in diameter than the hole for the top filler grommet.
The grommet does not fit as tightly in the lower hole when the plug is fitted. It does not expand the grommet to make it a tight fit in the lower tank reservoir hole.
My observation...
Thanks
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Old 09-08-2015, 08:36 AM   #8
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thats not hwh. look at the touch panel, if it doesnt say hwh on there, its not hwh.
that makes a difference in how the jack down alarm is handled by the system.
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