BX23D adding Kubota 'visible' filter/separator

tshep · Friday at 8:30 AM

Yes, this one - 6A320-58862 - with ?return? fitting on top.
How to handle this? My existing little gas-looking-filters are just in/out, no return.
I'm thinking long machine screw sealed into added threads.
Better thoughts?

In case anyone else looks at this filter, it DOES have a valve, internal, operated by the filter insertion.

And now, locations?
I would prefer before the lift pump, as to also protect it, and bowl (bottom at least) visible.

Any help?

nyone · Friday at 12:09 PM

If it has a return then you would just plug it.

RjCorazza · Friday at 12:32 PM

Keep in mind that most of the BX machines I've seen have (2) inline filters one before, and one after the electric lift pump. The second filter is there to prevent a catastrophic failure of the lift pump taking out the injector pump.
Kubota runs the same filter setup on the ZD mowers.

diesel85 · Saturday at 9:13 AM

I always wondered about this, but to be brutally honest, I've never had an issue running the stock setup. I got a 2002 BX2200, and I have never had an issue with fuel problems with those two little filters.

When I got the machine, I was surprised it didn't have a WIF separator, but after 23+ years of use, I can confidently say, don't mess with something that ain't broke.

And yes, I often times thought of doing a RACOR with a bowl, but it just never made much sense since I've never had any issues. The two inline fuel filters are also cheap and easy to replace every oil change to be a non issue for me. Or in other words: I couldn't justify it.

Only time I might consider it is if the diesel fuel is of poor quality, but that is as easy as getting better diesel fuel. Whole lot easier than doing plumbing of a more complex fuel filtration system. Even then, would I want to trust that filter to do it's job again bad diesel fuel? Nope, not a chance.

dodge man · Saturday at 9:22 AM

This is what I did when I owned a BX, it’s a Racor filter. It’s about the only place to mount it. It takes the place of the small filter at the back of the tractor, I left the small filter in place by the engine. So to keep it before the lift pump I ran a line all the way up to where the Racor is located then all the way back to where the lift pump is. Not quite as complicated as it sounds.

Doorman63 · Saturday at 9:54 AM

tshep said:
Yes, this one - 6A320-58862 - with ?return? fitting on top.
How to handle this? My existing little gas-looking-filters are just in/out, no return.
I'm thinking long machine screw sealed into added threads.
Better thoughts?

In case anyone else looks at this filter, it DOES have a valve, internal, operated by the filter insertion.

And now, locations?
I would prefer before the lift pump, as to also protect it, and bowl (bottom at least) visible.

Any help?

On my L2501 that filter is on the right side of the tractor (sitting in the seat looking forward). Right above and slightly behind the front tire.

It does indeed turn off/on when it’s screwed off/on

tshep · Saturday at 4:32 PM

Hey all, THX for replying.
I have looked at a number of plumbing versions, and became convinced the port is not a return, but a vent. The lines from this style all go to the top fittings of tanks, and not directly to returns (which also go to fittings at top of tank).
I'll suspect with the gas-filter-looking style I have now it is just ignored, as this first lies horizontally, and can self 'clear' to the level of out and in. (The 5 port junction right before also has its highest fitting as a vent to tank top.) The second is vertical, and very close to pump/injectors with their own vent/return.
I'm gonna':
Plumb it in with a clear tube to above the tank,
see if my theory is correct,
and if useful/needed plumb/tee into existing tank top vent hoses.

Still looking for a visible, protected, rear location?

dodge man · Saturday at 9:23 PM

I’m a little confused on the lines you are talking about. Return lines should have nothing to do with it. Imagine if you could take the rear filter out and just put the new one in. There is a line going in to the new filter and one going out. Nothing else needed. You obviously can’t do this because there isn’t room for a bigger filter in the original location.

Trust me, the best place is where I show it my picture above. I tried some other places there just isn’t a better one. There have been several other people that have done this if you do a search.