Leaking hydraulic coupler

[Billie]

Good afternoon, fellow Kubota-ers.
I’ve got a 1984 Kabota B 7200 and the hydraulic cylinders have been rebuilt, but a friend of mine put them on for me and I don’t know if you put them all right it’s one of the couplings is leaking and I’m attaching a picture so you guys will know what I’m talking about. I don’t know whether I need to take it off. Check the O-rings in or what if y’all could let me know something I would sure appreciate it. Thank you.

 

[North Idaho Wolfman]

Good afternoon, fellow Kubota-ers.
I’ve got a 1984 Kabota B 7200 and the hydraulic cylinders have been rebuilt, but a friend of mine put them on for me and I don’t know if you put them all right it’s one of the couplings is leaking and I’m attaching a picture so you guys will know what I’m talking about. I don’t know whether I need to take it off. Check the O-rings in or what if y’all could let me know something I would sure appreciate it. Thank you.

Ouch, well where do I start..
First of all you should NEVER usse galvinnized pipe fiitings for hydraulicss, as they aree not rated for the pressurre.
there are no O-rings on those fittings they are just a taper fit fitting.
That way of hooking up the lines does not allow for the liness to be properly connected and ttigtened.
It nneeds the right fittings to be used.
And the fittings do not appear to have any pipe dope on the threads so there is even less chhance that they will seal.
It's also very likely that the NPT fittings are not the right thread for those cylinder connections.
They could very well be BSPT threads.
They could also be a straight thread that should take SAE O-ring boss fittings.

This is one of the proper style of pipe fittings for hydraulics:

 

[North Idaho Wolfman]

First thing need to know, are they the original cylinders that came with the loader?

 

[North Idaho Wolfman]

I just looked and the fittings for that loader cylinder should be the one that I put the picture up on.
Need to kn ow the connection to the Lines side of it to know if that end need to be female or male.