JD4020 Question

Grayson Klassen · Mar 3, 2011

Actually two questions

I have a 68 4020 with a 148 Loader. The loader controls are actually the rear hydraulic controls and somewhat hard to reach to control the loader with any finesse. Can I add a set of controls in a better location and if so where do I tie into supply and return lines?

Second question is I have a Meade Mfg cab an am missing a door, are they still in business or do I have to make one?

Grayson

AKfish · Mar 3, 2011

Welcome to TBN, Grayson. Fort St. John, huh? Great place! Definitely a growin' and happenin' place. Everytime I stop there; the place has changed and gotten bigger!

I've seen 146-148 loaders with a 2-control pedestal mount that was plumbed into the rear hyd outlets. The hoses were tied to the bottom of the operator platform and routed up to the dual spool valves in the pedestal. There's a big bundle of hyd hoses but it works better than trying to work those levers.

If you check out Used Tractors For Sale at TractorHouse.com: John Deere Tractors, used farm tractors and farm equipment, tractors for sale, Case IH, New Holland, Agco, Kubota - Used Farm & Agricultural Equipment - John Deere MachineFinder - www.fastline.com and look over the JD 2440-2840 tractors and some of the 4020's and 3020's you should find examples of the loader controls I mentioned.

Don't know about that particular cab Mfg. Have you tried to Google them?

AKfish

Tx Jim · Mar 3, 2011

I would get a joystick control valve from a hyd supply co(Northern Tool has these) and mount stick inside cab and valve below cab. Tee into large line just in frt of brake valve for pressure and route return hose to a ported hyd filter cover. This is the easiest and best way to attach an ind loader valve. One word of caution""" be sure a get a closed-center valve"""""

Zebrafive · Mar 3, 2011

My 245 loader uses an valve mounted to the loader mount frame, cable controled by a joystick, with hydraulics connected exactly as TXJim described. The quick couplers for the loader hoses mount directly to the valve.

Try checking on JDParts, looking up your loader model. You should be able to find a picture of how JD did it with a loader mounted valve.

Grayson Klassen · Mar 3, 2011

Yes it continues to grow, Oil and gas is good and bad to the town for varying reasons. It is a good town though, not too small and not too big.

EddieWalker · Mar 4, 2011

Grayson Klassen said:
Actually two questions

I have a 68 4020 with a 148 Loader. The loader controls are actually the rear hydraulic controls and somewhat hard to reach to control the loader with any finesse. Can I add a set of controls in a better location and if so where do I tie into supply and return lines?

Second question is I have a Meade Mfg cab an am missing a door, are they still in business or do I have to make one?

Grayson

Hi Grayson,

How long have you lived in Ft St John? Any chance you know any of my relatives? The Krischuk's? Uncle Steve passed away a few years ago while out with his Bison, but my aunt and cousins still live there.

Eddie

Grayson Klassen · Mar 6, 2011

Eddie

I moved here in 2005 from Surrey, sorry I dont know them.

G

Grayson Klassen · Apr 27, 2011

Okay I am back at this again after a bit of a break and a little more research.

I believe tying into the brake supply lines is only available on the later 4020's I can't see where it would be possible to tie in. However several website suggest removing the elbow feeding the SCV and replacing it with a tee and tying in there. Any thoughts?

Next as mentined above there is the option of the ported filter cover for the return line. No one suggested teeing into the return line for the SCV and I am wondering why?

Would love some feedback:confused2:

:confused2:

Tx Jim · Apr 27, 2011

Grayson Klassen said:
Okay I am back at this again after a bit of a break and a little more research.

I believe tying into the brake supply lines is only available on the later 4020's I can't see where it would be possible to tie in. However several website suggest removing the elbow feeding the SCV and replacing it with a tee and tying in there. Any thoughts?

Next as mentined above there is the option of the ported filter cover for the return line. No one suggested teeing into the return line for the SCV and I am wondering why?

Would love some feedback:confused2::confused2:

On pre '69 4020's to plumb ind loader valve one should tee into "large line in front of brake valve" not a "brake line". One can tee into fitting supplying scv but the line I referred to will be closer to the ind loader valve hence less ft of hose required. On return line it can be attached to ported filter cover or fitting just to rear of hyd filter. I've never seen return attached to scv line.

Grayson Klassen · Apr 27, 2011

Thats what I meant about the line it would be silly to only be able to use the loader with brakes applied LOL

I will have to take a look again.

If I take some pictures could you add some arrows for me?

jd110 · Apr 27, 2011

Another option not mentioned here is to use one of the scv's to power the independent valve. Simply plug the pressure and return lines into the coupler and then tie the lever into position to provide flow. If you are trying to free up both valves for other purposes, of course that won't work, but I thought I would mention it.

The pressure line mentioned above is actually above the brake valve and slightly forward. It has a steel line attached that goes under the platform and feeds the rockshaft housing. It takes a 7/8" wrench to loosen it. If you remove the elbow from the clutch housing and install a tee, you can attach your pressure line there.

Tx Jim · Apr 28, 2011

I can barely turn on a computer so to answer your ???? no I don't has the computer skills to add arrows to a photo.

Grayson Klassen · Apr 29, 2011

Thats okay I am a major computer guy

what is a rockshaft is it part of the 3 pt cuz I dont have a 3 pt

Tx Jim · Apr 29, 2011

Rockshaft is the thing that raises/lowers 3pt. So if your tractor is 3pt deleted I think you'll have to tee in under the hood on pressure control valve.

Grayson Klassen · May 25, 2011

Okay here is another thought, what if I abandon the JD control altogether and replumb to a manifold feeding two seperate scv bodies, one with three valves for the loader and one with two for the rerar ports. The plumbing would be simpler having access to both the pressure and return lines from the original valve.

Thoughts?

Tx Jim · May 25, 2011

I'm not really understanding what you're trying to accomplish. Does your loader have a bucket grapple fork?

ctlguy · May 25, 2011

The info they are providing by tapping into the pressure control valve line is the most effective method of getting hyd power to a ind control valve. The loader performance will also most likely be better but if tapping into the pressure control valve line you must return to the oil filter cover (esp if a powershift) to avoid starving of oil. You can still buy the actuall ported cover from a Deere dealer you will find one in the parts catalog for a 200 beet thinner. But really the main reason this is all usually done is to free up the original remotes for other applications.

Grayson Klassen · May 26, 2011

The problem is three fold

1) I want to add a grapple:thumbsup:

2) using the rear controls to run the loader is awkward at best unsafe(reaction time) at worst

3) I do not want to have to unplug the loader every time I want tu use an implement with hydraulics