Third function dirverter valve vers True 3rd function valve

[N2DFire]

View attachment 501540

It appears tube 38 in the Bobcat parts catalog is what your referring to. If there is room would replacing the single banjo bolt with a double one work to get supply? Then I would need another double banjo bolt for line 33 which I assume is the return line?

Thanks for any thoughts.

38 is right on the money in that this is the leg of the hydraulic circuit you need to break to put your 3rd function in.

33 is the Pressure in from the hydraulic pump to the loader valve.

The hydraulic systems on these tractors are in series. pump -> loader valve -> through the rear end -> rear remotes -> 3pt -> return to tank -> back to pump

Your suggestion of a double banjo bolt would create a parallel path and, while I'm no expert, generally speaking with these systems - my understanding is that's bad.

Dennis - is there a valve that you know of that will fit without cutting the tube either at the front or the back. My ability to cut something and put it back together is nill, and I believe this tube see max hyd pressure, correct?

The simplest way is rather than cut that tube is to replace it with rubber hoses & fittings that bolt right in and put the valve in the middle.

Take some time to go read this thread. I have done exactly what you are looking to do and, while it's neither the best or only way to do it, I think it will answer a lot of your questions.
http://www.tractorbynet.com/forums/customization/358086-kioti-ck-35-3rd-function.html

 

[powerscol]

Read through your thread. I apologize that I did not quite understand what you did and then realize I have the clone of your tractor. So to assure my thinking the valve you used goes inline along hard line 38 path, You went from the loader valve (38 front connection) to your solenoid valve, then out of you solenoid valve to the rear connection where 38 enters the case. (Line 38 was replaced with the set up?) Ports A-B go to the front. Question - does the return flow (say operate A and B returns), just go out the line to the 3 pt?

I did not catch where you got your grip from? Also do you happen to have dimensions on your replacement plate that fit the top of the trans?

Thanks again
Keith

 

[N2DFire]

So to assure my thinking the valve you used goes inline along hard line 38 path, You went from the loader valve (38 front connection) to your solenoid valve, then out of you solenoid valve to the rear connection where 38 enters the case. (Line 38 was replaced with the set up?) Ports A-B go to the front.

Exactly! :thumbsup:

Question - does the return flow (say operate A and B returns), just go out the line to the 3 pt?

Yes - Pressure out on A and the fluid coming back on B just dumps into the T port of the solenoid which goes to the rear connection / 3pt.

I did not catch where you got your grip from?

It's a John Deer grip and I bought it in pieces. There is a link under the Grip section of my write-up that leads to member Speedex's project and it has the full parts list & numbers. Any JD supplier can get them for you but (at the time) I got the best price from greenfarmparts.com

You don't have to get as "fancy" on the relay controller as I did - I just have a thing for electronics. 2 regular Automotive relays should work just fine.

Also do you happen to have dimensions on your replacement plate that fit the top of the trans?

I didn't replace anything on the tractor - I just used existing threaded "ports" already on top of the trans. I just fabricated a spacer/mounting plate to give me some room so the fittings would fit without hitting anything. As for dimensions - I don't have anything specific, I just made it based on the bolt patterns of the sub-plate and the trans. (The actual valve bolts to the sub-plate, the sub-plate bolts to the spacer, and the spacer bolts to the trans housing)

If you like the general idea of doing it this way but don't feel comfortable doing your own from scratch - there are companies that make a bolt on kit (Like W.R. Long - I just didn't like where the solenoid mounted or the ergonomics of the grip so I built mine from scratch).

Everything Attachments is one vendor that offers these kits and they are great folks to work with if you have questions / problems along the way.
3rd function valve kit for any tractor, free shipping within 1,000 miles!!

I know it looks a little daunting at first but if you take it one part at a time it's not so bad.