Can't find tank return line

[aczlan]

While I don't have exactly what's in your picture (it's an option), I do have the same base. We may be onto something. I don't have line #110 but I have a plug #230 right there. So if that indeed dumps to tank, that would work. I could maybe even purchase that line #110 and then tie into it. The hole is smooth bore and the plug just pushes in. Here are my pictures. Also, not the biggest hole so I'm wondering what it needs to support as far as flow.

Purchasing #110 would be the easiest option, that should just be a thin wall tube with a groove in the end and a tab welded to it for the retaining bolt.
That line should be able to handle the full output of the hydraulic pump as it would need to be able to do that in its intended use.

If you install the Messick's app it lets you see all the Kubota parts diagrams (as well as New Holland, Bush Hog, Ferris, etc), that's where I got that screenshot from.

I am not sure which transmission you have so adjust accordingly.
There is a steel line on the valve that is the return to tank s/n dependant - Look @ H23300 Hydraulic return line illustration, H280xx is your loader valve. should be a link below:
Kubota L424HSTC (Hydrostatic Transmission / Cabin / 27 - 29) Parts Diagrams
Then look at the loader section & 3rd function kits link below:
Kubota LA854 (FRONT LDR / L424 / 474 / 54 / 524 / 574) Parts Diagrams
item# 04 shows a loader return line that will have an addition fitting on it that you can attach a return hose to.

Yes, that was an option on the older tractors up to 2009 per the parts diagrams, but this tractor is a newer 2010+ HST Plus tractor and it doesn't have that, on the newer tractors the return line goes directly from the back of the valve in the transmission with just an O-ring between to seal it.

Aaron Z

 

[brianrohr13]

I went to dealer today and while it was not the most helpful experience it did pretty much confirm that part #110 is included in the factory rear remote kit that you can get from Kubota and it is in fact the return line. I'm still wavering on if I'll do my own valve stack or not but I might be starting to lean towards ordering the kits from Kubota and just maxing out what they can provide with 3 remotes. If I did that I could always add my own stack later to provide a couple more and it'd be a lot smaller stack than the 5 I was planning. Way less hoses.

 

[Michael In Tennessee]

All it takes is money. Kubota rear remotes are expensive.

On my MX, all three ports are in that plate. If I had a mill, I'd have made an adapter instead of running hoses from the loader valve.