Ok so heres the deal...I have an older b7100 that i am puting a plow on...I have one cylinder for the lift and one for the angle...I have a brand new prince loader valve also installed but now i am starting on plumbing this thing....I want to be able to use a selector valve or the bypass thats build in the loader valve to keep my 3 point operational....I have a hose that is looped in the pressure block on the right side of the tractor...Do i use one side for the pressure side and one side for the return or how does that work???sorry for the long post but i would like to get this figured out...
older b7100dt hydraulic question...
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Egon
Epic Contributor
The looped hose is where you should hook up. My loader is working on this block plus a return line to the transmission fill point. The three point operates independantly of this system. There is also a power beyond access point just under the front of the seat.
I have heard that the block can be broken if not hooked up properly.
Please note hydraulics are not my strong point.
Just went out and looked at mine. From the block on the tractor one line goes to the middle of the joystick control, one line goes to the bottom of the joystick control. The low pressure return line goes from the bottom of the joystick to the top of the transmission fill plug. The fill plug has an extension to take this line.
I have heard that the block can be broken if not hooked up properly.
Please note hydraulics are not my strong point.
Just went out and looked at mine. From the block on the tractor one line goes to the middle of the joystick control, one line goes to the bottom of the joystick control. The low pressure return line goes from the bottom of the joystick to the top of the transmission fill plug. The fill plug has an extension to take this line.
MadReferee
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That hydraulic block appears to be just a break in the hydraulic circuit. The giveaway is the looped hose. The biggest issue is which port is the pressure side from the pump. That port will connect to the pressure inlet of the Prince valve. The other port on the block most likely leads directly to the 3pt and should be connected to the power beyond port on the Prince valve. The return to tank port on the Prince valve should be hooked up to the transmission sump as Egon indicated.
MadReferee
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I notice that both outlet section side ports are plugged on that Prince valve. Is that valve supposed to have the power beyond sleeve option? It doesn't look like it to me since a PB plug will stick out an inch or so and would be in the side port closest to the levers. That being the case (no PB sleeve) then you can forget about connecting to the transmission sump and take the top outlet port (it's plugged with a yellow cap) and connect it to the hydraulic block where the block returns to the 3pt.
LHoyer
Silver Member
You need to convert your valve to "power beyond" if that is an option with your valve. What model Prince? 5200 series? You MUST have power beyond to make this setup work. The front outlet on the block goes to your "in" port on your valve, connect a hose from the power beyond port to the rear port on your block-this will keep your 3 point working. Then you have to have a line from your out on the valve to the fill port for your tranny to dump your "working fluid" back to the system, you can this adapter from Kubota or use a 1/2 " tee into the fill port. The extended length spool in your pic should be to your lift cylinder as this should be your float for your blade. The other spool should be connected to your angle cylinder.
LHoyer
Silver Member
I took another look at your valve pic, it is a stack valve, here is the link to Prince catalog on this valve and it appears there is a power beyond option http://www.princehyd.com/LinkClick.aspx?link=products/valves/catalog/ValvesSeries20.pdf
MadReferee
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Not true at all.LHoyer said:
The hydraulics for his configuration will work just fine with a valve that does not have power beyond capabilities. However, simutaneous operation of the 3pt will be severely restricted and depending on circumstances, simutaneous operation may be totally unusable.
LHoyer
Silver Member
Right. Should have said "You MUST have power beyond to make this setup work "PROPERLY".
The valve does have the power beyond option but like you say i need the sleeve and fitting...This is the loader valve i have...Thanks
Prince 2 Spool Loader Valve, Model# SVA-D2 |Valves | Northern Tool + Equipment
Prince 2 Spool Loader Valve, Model# SVA-D2 |Valves | Northern Tool + Equipment