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OldHokie, torch, and wolfman, Thank you all so much for ALL of your help. I got the backhoe working today :). It was one of those one thing after another projects but I was finally able to finish it up. I even moved dirt for about five minutes before blowing a hose hahahaha. Of course its the...

Thanks Dan, I will still need to convert the backhoe to have a PB. Looks pretty simple from the instructions I found. In the images they call out a power back sleeve. I found the plug where that gets inserted on the valve body. That should be the hardest to source part. I have a part number...

Thanks all! I have put everything back together and it all still works and doesn't leak, ill call that a win for the day. Based on Hokies' advice I will be focusing on working the plumbing from the BF400 block and finding the parts that I will need to make the backhoe work as open center. Will...

looks like that surge relief valve is the key component. If i get this to work ill need to make another thread with the details. I am sure there are other folks with these types of backhoes.

From what I am getting from the manual this backhoe can be configured to run with PB. Need to start taking things apart so I can see the valve better. They reference a PB kit, so need get the details on that kit to see if I can just make it :) . Thanks again for the explanations. Really made...

And as I was explaining this to my wife I found an problem. I dont think this backhoe has an HPCO line. Ill have to dig a bit deeper into that. Thanks again!

Ok this makes way more sense now. Thanks! That diagram is really really helpful. So I think I know how to hook this all up now. Will let you know how it goes. Thanks!! Cheers! -G

Hmm I think I am starting to smell what you are stepping in... so the backhoe only has a goesinta and goesoutta line. So that would be for a closed center? Whereas the BF400 has two goesintas so thoes are actually flowing through the valve but bypassing and the return line only returns when...

The T's that I bought are 3/8 npt and fit (or seem to very well I know thread sizes can be tricky) The issue is that compression fitting in the picture. I can measure it but would need to know what I am measuring against. So ill ask again, why cant I use a T? the current set up is those steel...

I think this is the fitting that I need. https://www.hydraulicsdirect.com/ProductDetails.asp?ProductCode=SS-47205&gclid=Cj0KCQjwsdiTBhD5ARIsAIpW8CJmCoJKhEtWzD6caATqx3J2N9DN6QyyB697wW-OTiOgG6zwgvm62mUaAj2ZEALw_wcB

Hi Hokie, I think I beat you to this post. See above ;)

Thanks! Figured the other thread was a long shot with age, but it had all the relevant images.

Thanks for the replies! Though it was a long shot given the age of this thread :). NI Wolfman: they are not JIC. They are just like a swagelok. Why can't I use a T? The current connections come out of the block at a right angle just like in the previous pictures in the thread here. So the fluid...

Hey there, any idea what the union type and size is from the steel line into the hydraulic block. the block to the elbow is 3/8 npt but the steel line to the elbow looks like a swagelock fitting. Want to confirm type (swagelock) and size. Thank! Edit: Looking like it may be a 3/8 flareless bit...

Hey Folks, this has been a super useful thread for me. I am trying to tap off of that block for a similar reason. Any idea what the connection type is for that block to the hard lines? The block on my L235 has 3/8 NPT but it goes to the compression fittings on the hard lines like in the picture...