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Subject: GPM flow of old Wagner Hyd control valve (spool)

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Beth and Allen    Posted 04-28-2020 at 14:53:04 [URL] [DELETE]        [Reply] [No Email]  
  • GPM flow of old Wagner Hyd control valve (spool)
  • Does anyone know what the gpm flow of the wagner control valve (spool) is? I have 2 of them and I decided to replace,not rebuild them. I ordered a new one but I didn't pay attention to the gpm on the new one until it arrived. When I opened the box I realized the new one is only 8 gpm, I don't think this is enough,and the hydraulics will be too slow. I put on a newer pump that is higher volume output,aprox 25 gpm, and an inline filter rated at 25 gpm.I eliminated the old inline strainer type filter because I don't feel it was doing a good enough job. I'm sure I need more gpm than 8gpm. Thank and God Bless, Beth and Allen.

    TheOldHokie    Posted 04-28-2020 at 15:56:06 [URL] [DELETE]        [Reply] [No Email]  
  • Re: GPM flow of old Wagner Hyd control valve (spool)
  • A 25 GPM pump is way to large and greatly exceeds the 5 gallon capacity of the loader's reservoir. You will be over heating the oil and quite possibly whipping it into a froth pumping at that rate through the 3/8 lines on the loader.

    You also have an issue with the filter. Trying to pull 25 GPM through a suction side filter will likely cause cavitation problems in the pump.

    The original pump was closer to 10 GPM, possibly half that depending on exactly what model you have. All these pieces play together and have to be in the proper balance. Put that 25 GPM pump aside for your log splitter project and get one sized more appropriately for the loader. I also suggest you replace the suction side filter with a high flow steel mesh strainer. If you want a filter put it on the tank return.

    TOH

    Beth and Allen    Posted 04-28-2020 at 17:21:33 [URL] [DELETE]        [Reply] [No Email]  
  • Re:Thanks Old Hokie,Great Info.
  • Thank you Old Hokie,I wish you lived next door to us.I'll try to find a 10 GPM pump. But this hurts, The pump I have was totally rebuilt then given to me free. I don't want to screw up now, I've put a lot of work into rebuilding this old Wagner FEL.I'm mounting the filter inline after the control valves before the reservoir,but if you think I should I'll try to find a high flow steel mesh strainer and reinstall the old housing for it. I'm now in the market for a new pump, I'm guessing my system needs a 10 gpm pump, it has dual action cylinders and 2 dual action cylinders on the bucket. I have 2 old pumps but they are wore out and leak around the shaft. Many Many Thanks and God Bless, Beth and Allen.

    TheOldHokie    Posted 04-28-2020 at 18:50:52 [URL] [DELETE]        [Reply] [No Email]  
  • Re:Thanks Old Hokie,Great Info.
  • It would help if you would provide a model number for the loader and some pictures of the old valve and pump. Your description doesn't match the older jungle gym pipe loaders which is what I was assuming. if it has two bucket cylinders sounds like one of the "newer" Power Loader models - see pic below. Much improved design over the jungle gym monstrosities. Those Power Loader models came standard with a 14 GPM pump and a considerably more advanced control valve. A 17 GPM pump was also offered for use with the back hoe option. You would really be pushing the envelope with a 25 GPM pump - that's almost double the standard offering from Wagner. Pumps are not real expensive - you can get a 15 GPM gear pump for $125 + shipping but it has a 5/8" shaft that will probably require some coupler work to match up to the old drive shaft. Filter where you have it in the return line is fine and a tank strainer on the suction side is SOP on modern machines. It is an especially good idea on these old loaders as it keeps the rust and dirt that is inside the reservoirs out of the pump. That stuff is a death sentence for a new pump.

    15 GPM Dynamic Gear Pump

    TOH


    Beth and Allen    Posted 04-28-2020 at 19:25:47 [URL] [DELETE]        [Reply] [No Email]  
  • Back to Old Hokie
  • The picture you sent is almost exactly like the loader I have, only a few minor differences in the main frame. I'm going to order the pump you pictured. Now I have to find a new set of controls, I sent the other (8gpm) set back, you are a life saver. Thanks again & God Bless ,Beth and Allen.

    TheOldHokie    Posted 04-28-2020 at 19:31:25 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Back to Old Hokie
  • Make sure you order the correct pump - I idin't check the detauils very carefully. You want counter clockwise rotation and keyed shaft.

    TOH

    TheOldHokie    Posted 04-28-2020 at 19:39:32 [URL] [DELETE]        [Reply] [No Email]  
  • PPS>
  • When you start adding the new pump and valve keep in mind the ports are SAE o-ring and not pipe thread. If you try to screw pipe fittings into them you will be making an expensive mistake. Order the correct port adapters along with the valve and pump.

    TOH

    TheOldHokie    Posted 04-28-2020 at 19:13:10 [URL] [DELETE]        [Reply] [No Email]  
  • PS>
  • You can get wire mesh spin on tank strainer elements that mount to a standard filter head just like a paper filter. Put the head right on the tank outlet, spin on the strainer, and you are good to go.

    Zinga AE-100 wire mesh spin-on tank strainer

    TOH

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