JD 3020 w JD 146 front loader hyd hookup

lightfoot500

New User
"Re: JD 3020 w JD 146 front loader hyd hookup ?".

thanks,
just getting around to this again.
below here is the link to my original thread that has been retired and can no longer be posted to
.
http://www.yesterdaystractors.com/jd/messages/516447.html


so first take the return line loose and check if
fluid is bypassing when the levers in neutral ?
if so, look into that deeper.
second, which side is the rock shaft port as shown
in the picture or where would the return be on a
gas 3020 ?
it looks like the supply line is tapped into a
supply in back where the hydraulic lines would
hook in for from a piece of equipment.
here is a utube link if it in action. notice that
the bucket raises then hangs, i had the lever in
the raise position the whole time. so the bucket
should be coming up a bit more smoothly.



https://www.youtube.com/watch?
v=WsWroNPTUhY&list=UU0q73r-05fKE4CkKZ8DxIOA
Untitled URL Link
 
I sure thought a JD 145 was designed for utility not rowcrop tractors.
pressure oil

mvphoto11456.jpg


return oil
mvphoto11457.jpg
 
Tx Jim
You are right about the 145 but the poster said 146 (also for utility tractors). Must have been another oldtimers attack.
I once saw a 190XT with a 145 on it.
I guess if it works????
Take care.
 
(quoted from post at 13:24:01 09/27/14) Tx Jim
You are right about the 145 but the poster said 146 (also for utility tractors). Must have been another oldtimers attack.
I once saw a 190XT with a 145 on it.
I guess if it works????
Take care.

D-
Thanks for the correction as I meant 146 when I typed 145. Look at the 146 parts catalog for mounting brackets for a rowcrop. THEY AIN"T THERE. :wink:
 
Ok, thanks,
i took the return loose and started the tractor
and there WAS a flow of oil coming out with
switches in neutral. for a guess i would say the
flow would fill a quart bottle in about a minute
or so. so it looks like the prblm might be in the
valve? or is that not enough to worry about? i
did try operating the bucket just a little, and
had a healthy stream when i lowered the bucket and
a healthy slug when i moved the lever from raise
back to neutral.
the supply looks like it is hooked in at the right
place. i see the picture of the return line but
havent located that on my tractor yet. it may be
that my return is in an ok spot.
thanks texas jim for your posts.
 

Supplying the loader from an SCV slows the loader and takes that SCV out of commission for other uses. Plus it looks like an amateurs job.
The point of oil return is vital or all manner of shuddering, shaking and moaning can occur while the loader operates slower than it should.
 

lightfoot500
When you measured the quart of oil flow through valve with levers in neutral was oil at operating temp? If not flow will increase as oil gets hotter.
 
buickanddeere, i appreciate your comments. yes, it
was my first time. you sound like you are a
mechanic, you dont live near PittsburghPA by any
chance?
so i can plumb the return back to the rocker as Tx
Jim's showed in his pictures. and see what
difference that makes.
second, the valves may be faulty since i was
getting flow at neutral position and need replaced
or mended.
third, what is the best location for supply, if
not the selective control valve ?
thanks
 
Txjim has been kind enough to re-post the wizardry of tims's proper connection locations and fittings.
Oil supply should be tapped into with a T between the steering priority valve on the high pressure line and the scv/rock shaft valves.
Return oil from loader back to the tractor ishould be routed to point between the transmission pump outlet and the inlet to the transmission filter.
Sounds like typical leakage. The valves on my JD 240 loader pass about a pint per minute seepage. Nothing to be worth bothering with . Other than turning the pump destroker in cold weather.
Speaking of such. Your tractor's cold starting maybe improved with a $15 front pump destroker.
 
(quoted from post at 11:33:38 09/29/14)
Txjim has been kind enough to re-post the wizardry of tims's proper connection locations and fittings. .

b&d
Tim although he is a JD wizard is the author of the photos because I can't remember who the original author was EXCEPT it wasn't ME.
 
I don't know about the "Wizard" part,, but they are my Pics,,several others on here have came up with the same way of hooking in, and it is the most successful way of doing it..It improves the flow to the loader greatly.. and on the other part,,some one has to keep power coming to the shop lights ;^)
 
Not sure that I agree it looks like an amateur job. In the pics attached, I am using a second SCV for my model 58 farm loader and it does great with speed, power, etc. Sure I'm using the 2nd SCV but I don't do field work (e.g. baling, hay cutting, raking, etc) with the loader on. These connections are OEM John Deere.
a170264.jpg

a170265.jpg
 
If you happy with that set up...you would be "amazed" with a separate valve and my hook up...much more flow to the loader, if you are using it seriously..for casual use it don't matter much...
 
(quoted from post at 17:19:51 09/29/14)
Those are direct plumbed to pressure and filter or through the dash scv valves?

b&d
Here's the parts schematics for 61-4010 factory auxiliary breakaways. Basically the same as plugging into rear breakaways.
mvphoto11562.gif


mvphoto11563.gif
 

Good find to score that front rockshaft SCV.
The front rockshaft and front pro is popular in Europe but show up with those in North America and the result is puzzled looks.
We see front rockshafts occasionally on tractors owned by Euopean immigrants or those using a front mount snowblower.
 
Yep...that's it. It's a very clean/sharp installation and works great with the model 58 farm loader. When I did the restoration on this tractor, I wanted it to be as near original as possible. She isn't a parade tractor....it is used....but it was restored to parade quality top to bottom and front to back.

To your point Tim, it works fine for the level of loader work we perform with the machine. Using the loader is not this tractor's full time job....and it's pretty fast and powerful using the SCV connections. But I'm sure that if I had to use the loader 8 hours a day 5+ days a week, I'd want it to be plumbed for faster results.
 
It seems that more of these show up in Southern States,, must be an application for them there, I have only seen a few in this area ..front mounted cultivators for one thought..and of course this loader application, probably back then that was the better idea for a loader system, it would be clean and neat for dismounting..
 

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