Adding/splicing new hydraulics to old existing hydraulics on a old tractor.

[Tropax]

Hi i want to add a 2 hydraulic function to my tractor while still using my existing hydraulics. Can i use 2P40 Contols to tap in like in the photo (photo not supportet?!)
Cut line between pump and 3ph, and install controll valve p to pump and t to 3ph, or do i need to conect thru power beyond (high-pressure carry over) and splice a t-joint on the return line at tank. and how shuld i hook it up?
Im woried that if i just pass thou from P-T that it might blow o-rings is i use my original 3ph. But still worried that my 3ph will lose all pressure.
Its an old Volvo bm 320 (Buster)

 

[Tropax]

 

[Tropax]

 

[ptsg]

You need to add a power beyond line from the new valve to the 3pt and tie the tank lines together. Otherwise you will damage the new control valve.

That looks like a Badestnost valve. You need the power beyond fitting for that valve.

 

[Tropax]

You need to add a power beyond line from the new valve to the 3pt and tie the tank lines together. Otherwise you will damage the new control valve.

That looks like a Badestnost valve. You need the power beyond fitting for that valve.

View attachment 587601

thanks for the reply, like this diagram?
can it be hydraulic valve open center or must it be closed

 

[ptsg]

Yes exactly like that diagram. It's open center.

 

[Tropax]

Sweet �� thank you for you help.... Im off ordering parts ��