Powersteering/aux. Hydraulic pump
Posted January 07, 2012 - 05:23 PM
Let me tell you this .... It has volume and pressure now! It will shut that Kubota diesel off right now ! And its just a tiny little pump, but man does it work nice!
This is what the rock crawler folks do to their pumps. I've been doing it for many years retroing powersteering to tractors and plow pumps on pickups and it definately makes um what they ain't
Posted January 07, 2012 - 06:04 PM
Posted January 07, 2012 - 07:45 PM
You and I know this without thinking about it, Keith. Many others do not and could get into trouble with the wrong relief settings.
Edited by TUDOR, January 08, 2012 - 04:58 AM.
- Larry B said thank you
Posted January 07, 2012 - 08:45 PM
Posted January 08, 2012 - 05:17 AM
These little pumps have a built in flow control as part and parcel of the relief valve. Eliminating one eliminates the other and full flow becomes available. Too much flow through a small diameter (1/4") hose makes heat and these pumps can well exceed the max recommended flow rate depending on their rpm. Keep the rpm of the pump at or below 3600.
That all being said, this makes a great and inexpensive 6 gpm@ 1200 psi pump (derated for safety), well suited to FELs, if you have a remote reservoir model of a GM p/s pump and can get the proper high pressure fitting.
Well done, Keith!
Posted January 08, 2012 - 06:59 AM
Posted January 08, 2012 - 09:56 AM
Now I did not hurt the pumps saftey features, so it still has relief, just increased the volume control feature, as this is what had the issues.
The pump I have is tiny, maybe 4 gpm max. But a gm truck pump will easily do 12 gpm as they have a huge pump vain cavity, that is if you could get all that out of the small charge cavity. I have done this, but it took a lot of special machining.
Posted January 08, 2012 - 02:14 PM
Posted January 08, 2012 - 07:39 PM
I took this shot half way through, should have gotten a cid of me pulling out the large oak, that little rig really pulls man! I'm totally pushing him WAY beyond what it was intended for.....
- mikebramel said thank you
Posted January 08, 2012 - 07:48 PM
That is one nice "Ford" skidder.
- skyrydr2 said thank you
Posted January 14, 2012 - 06:39 AM
I didn't think it wad going to work due to the cylinder volume, but it does, so we will be running it like this for a bit to see what happens in the heat side of things.
I am not sure why this generated so much heat, plenty of oil, and all the hoses and tubing was plenty large for this app. And I'm almost positive it was all caused by the steering valve ? Some run time will confirm this.
Posted January 17, 2012 - 06:28 PM