Loader hydraulic connection

MarkStewart · Nov 13, 2004

Hi, I am installing a loader onto my yanmar 1401 that I bought a few months ago. I built all the brackets etc. and have it mounted to the tractor. What I was hoping was someone could help me with the hydraulic connection. From what I understand I need to cut a section out of the hi-pressure line and install fittings and hoses, one from the pump to inlet side of the loader valve and then line from outlet side of valve to hi-pressure line continueing to 3point. Like the diagram on this page web page

I also understand I need to make sure that I have a open center type valve..

How do I tell if that is what I have?

Also where can I get the compression fittings? Or could I use some type that I could braze on etc.

Thanks

blackd · Nov 13, 2004

If you have a hydraulic shop near you they will have the compression fittings. I used some 90's after attaching the compression fittings to make the turns across the tractor to the valve. The only thing I can suggest is to check with the supplier of the valve to assure that it is open center.

lens12 · Nov 13, 2004

Most valve come as open center valves . Aplug usually has to be installed to make them closed center. To tell if a valve is open center, blow in the IN port. if air comes out the out , it is open center. If nothing comes out it is closed center. You can braze pipe fittings on the hydraulic lines to hook your hoses to.

MarkStewart · Nov 14, 2004

Thanks for the replies.
Excuse my ignorance but I thought brazing was only for copper and brass? Didn't know it worked for steel aslo.
So if I bought some black pipe nipples I could braze them to the high pressure line? What is the high pressure line steel also? Thanks.

Soundguy · Nov 15, 2004

At work we've brazed steel lines, and cast iron as well.

Soundguy

gbirky · Nov 15, 2004

Black pipe and fittings are not rated for the pressures of your hydraulic system. Find the right fittings at a hydraulic supplier. The last thing you want is one of those fitting letting loose. At 2000psi, it can do some serious damage - especially to flesh.