Scotty Dive
Veteran Member
I don't know much about this, maybe someone can explain.
A PS kit includes a 'proportioning valve' so the PS gets fluid before the loader will. I think this causes the slow loader response at low rpm, in contrast to a non-PS tractor where loader hydraulics work about the same at any rpm.
Anybody know more about this?
That is true about the proportioning valve that comes with the Hoye PS kit. The trouble is that is has a range of say 0 to 10 where 0 allows no fluid to the PS and 10 gives it all of the fluid. Mine is at about a 3. If I went to 2 the loader would work great, but I would be back to manual steering. If I went to 4, the power steering was smooth as butter but no loader functions. There is not much room for error. So I had to adjust mine right in the middle where the PS worked as you would want it while I still had use of the loader. The fact remains while the tractor is at low idle, there is not enough pressure or fluid to have all three systems function like it did without PS. For example, if I started the tractor in the beginning of the day and idle it at 1000 to 1500 to allow warm up and I need to lift the 3pt (or loader) for an adjustment i would have to increase the rpms significantly just to get the 3pt to move. Before PS, the loader or 3pt would raise at low idle.
So the plot thickens for me but I also lucked out a bit in the long run. The valve came and I started to do some prep work making sure I have all of the adapters and such. Because I will be using PBY to power the 3Pt, I need to have made another hose that goes from the loader valve to the tank. I happened to call the tech support folks at Brand to verify this is correct and the tech started asking me a few questions and told me I had the wrong valve in the sense that the controls would be backwards. In other word when I put the joystick forward to lower the boom, I would be tilting the bucket backwards. So, I have to swap this out. If you look at the link Wooly provided (Thank you Wooly) there are three different jostick configurations that are orderable. The Correct part number for a joystick valve with regeneration and float where the joystick lowers and raises the boom in the direction of the hose ports is a LV22TKRFSA3B. You can also purchase it with PBY by adding a W after the B or by purchasing the LV2-W Power beyond adapter separately. I give this info for the next user to use in case they have a Vtek loader with the BLB loader valve that needs replacement. I will show some additional pictures after I install, but it seems like it will go in pretty effortlessly to the bracket on the loader. Looks like I may have to drill a hole or two to match up to the new valve to mount it.