Adding 3 spool valve to JD 4020

   / Adding 3 spool valve to JD 4020 #1  

jackmac

New member
Joined
Aug 22, 2010
Messages
10
Tractor
MF 130
First I would like to apologize if this has already been addressed but I did a search I could not find the information. I am wanting to add a 3 spool valve to my 4020 to operate a batwing mower. I would like two of them to have the float option. Where can I tap into the hydraulic system to have this operate correctly? Would I simply just have a supply and rerun line?
 
   / Adding 3 spool valve to JD 4020
  • Thread Starter
#3  
Thank you for the info. Do you have any idea or suggestions on where to tap into the hydraulic system on the tractor?
 
   / Adding 3 spool valve to JD 4020 #4  
I am not that familiar with JD's, but I believe there is an accessory block toward the back.

Look at your owner manual and it should provide the info you need.
 
   / Adding 3 spool valve to JD 4020 #5  
Our 1967 4020 has a 3 spool vavle mounted on the fender so you can operate it with your right hand. We run our FEL with the 3 spool vavle (only use 2 of 3 vavles). It has quick connects that we disconnect the hoses for the FEL (but leave the loader on) and plug in our 3 batwing hoses. The valve is run from the rear remotes.

I have a bradco root-rake grapple for my Kubota M9450. If I can find or make an adapter plate for the JD 148 FEL, I'd like to utilze the 3rd vavle to run the grapple with the 4020 if needed.
 
   / Adding 3 spool valve to JD 4020 #6  
This brings up a question about float.

If you have a two lever valve and one of them is in float, the first spool, can the other lever be in detent, and still function?

Is there any flow to another downstream valve via the PB port?
 
Last edited:
   / Adding 3 spool valve to JD 4020 #7  
1967 model 4020 doesn't have a detent or float function, you'll have to be the float.
 
   / Adding 3 spool valve to JD 4020 #8  
That was just a question, not relative to any model in particular. Just related to theory of operation.
 

Tractor & Equipment Auctions

DRILLING CABINET (A50854)
DRILLING CABINET...
2018 VOLVO VNL64T670 TANDEM AXLE SLEEPER (A51219)
2018 VOLVO...
2017 Ford F550 4x4 Bucket Truck - 45FT Terex TL40 Boom, Powerstroke Diesel, Utility Bed, 54K Miles (A51039)
2017 Ford F550 4x4...
2017 PETERBILT 587 TANDEM AXLE SLEEPER TRUCK (A51222)
2017 PETERBILT 587...
2022 CASE TV370B SKID STEER (A51242)
2022 CASE TV370B...
2009 Peterbilt 384 T/A Wet Kit Day Cab Truck Tactor (A50323)
2009 Peterbilt 384...
 
Top