35 loader on a 3020

ajhbike

Member
I just got a 35 loader in great shape for the 3020. I know it is light for this size tractor and I know it might need some futzing to get it on....only for light work our lifting. I imagine I have to connect it to the rear remote which is controlled by the control lever on the dash....how do you set the lever to ruin the loader?
 

You need to check to determine if hyd control valve if applicable is open or closed center. This can be accomplished by utilizing 3010 hyd system or air. If loader has control valve I would attach it to tractors hyd system independent of scv's.
 
I can't remember which is which, but the loader control levers are push or pull and they return to center if you let go....open I think. And it is a 3020
 

Sorry for my error on model # but that makes no difference as control valve still needs to be closed center for 3020 hyd's or have ability to allow installation of a closed center plug with seal.
 
I have a #35 but on a JD430. The parts book for the loader lists 2 different cylinders depending upon when loader was produced. I assume the later ones would accomodate the higher hydraulic pressure of the new generation tractors. Parts book also shows mounting on new generation tractors. As mentioned if this came off of a 2 cy JD and you want to use the valve on it you will need to change valve or modify to closed center
 
When you say closed center , do you mean that you move the control lever forward to raise the bucket and when you let go of the control lever it snaps back to neutral position?
 
No, an open center allows the fluid to pass when the lever is in neutral, a closed center does not allow fluid to pass when in neutral.
 
(quoted from post at 05:47:47 01/06/19) I just got a 35 loader in great shape for the 3020. I know it is light for this size tractor and I know it might need some futzing to get it on....only for light work our lifting. I imagine I have to connect it to the rear remote which is controlled by the control lever on the dash....how do you set the lever to ruin the loader?

We have about near talked the topic to death hundreds of times here with the advantages of a direct connection to the loader’s joystick valves . Returning oil to a ported transmission filter cover . Or tapping into the line to the transmission filter .
And not using the SCB to supply oil to the loader, log splitter, hydraulic motor , backhoe etc
 
Well if it annoys you then skip over the topic...I am trying to learn and figure out some things that are new to me and most are very helpful.
 
Well if it annoys you then skip over the topic...I am trying to learn and figure out some things that are new to me and most are very helpful.
 
Do you know what it was on for a tractor previously? Does it have a control valve mounted on the loader now? This info may help identify the valve as open or closed center, if it has a valve on it. As TX Jim posted you need the right valve for your 3020 closed center system. As buickanddeere posted plumb it in as JD recommends, don't use the SCV to operate it.
 
(reply to post at 16:59:43 01/06/19)
The guy I got it from got it from a guy who bought it at an auction, Etc....so I don't know what it was hooked to. It has 2 control levers on the loader that spring to neutral. The valve control cluster has a 2 foot line with a female quick connect and another with a male quick connector dangling off of it. I realize a picture is help full so I will put up a couple...thanks
 
The fact that the levers spring back to center/neutral has nothing to do with whether it is open or closed center. All loader valves should spring back to center when released with the exception of the valve that controls the boom cylinders. If it is a true loader valve, when the lever is pushed past the lower position it should have a detent to hold the valve in place, allowing the bucket to follow the ground, called floating.

Open or closed refers to the oil flow through the valves when the levers are in neutral. Open center valves allow oil to flow through the valve body and back to the reservoir when no functions are being used. These are normally used on gear and vane pumps, like the pumps that were on most of the tractors the 35 series loader was used on. The closed center valves, like your 3020 will need, don't allow oil to pass when functions are not in use. The rotary piston pumps build pressure and de-stroke (stop pumping) when oil is not needed. Oil leaking past any valves in the system is what leads to some of the discussions you may have read here about hard starting and de-stroking valves.

You may have to hook it to your hydraulic system or use air to check the type of valve, as Tx Jim posted. It won't hurt to post some photos.
 
Thank you. Do you think the plumbing set up for a 3010 would be similar to a 3020? the manual I ordered is to hook up to a3010
 
(quoted from post at 21:12:08 01/06/19) Thank you. Do you think the plumbing set up for a 3010 would be similar to a 3020? the manual I ordered is to hook up to a3010

I would guess similar, but can't be positive of it.
 



If you could post a photo of tjhe FEL hyd control valve especially the RH side of valve site members could help you identify the valve. 3010 & 3020 hyd FEL connection to tractor will be the same up to 3020 sn 122,999. 3020 with SN 123,000 up utilizes a auxiliary hyd connection block refereed to as power beyond
 
I can try and get some better ones tonight


mvphoto29316.jpg


mvphoto29317.jpg
 
A Gresen valve with adjustable main relief, looks like the open center control valve for use with the tractors this loader was originally used on to me. I expect getting a new closed center valve will be less expensive and a better choice than finding conversion parts, if there are any, for that valve. Just my opinion.
 
(quoted from post at 08:08:02 01/07/19) A Gresen valve with adjustable main relief, looks like the open center control valve for use with the tractors this loader was originally used on to me. I expect getting a new closed center valve will be less expensive and a better choice than finding conversion parts, if there are any, for that valve. Just my opinion.

I agree valve is probably open center but a photo of other side(outlet) would help identify
 
(quoted from post at 09:51:15 01/07/19)
Closed center valve and plumb it into the system right? Can't use the remotes?

You can use the remotes however; Function is better for the loader and tractor to plumb it in and have a closed center control valve independent of the remotes. That also leaves the remotes free to run other hydraulic equipment, if you ever need. Other wise if you have a need for the remotes you will need to remove the loader, or figure out how to secure it to hold it up without the hoses connected. You can use quick couplers at the independent plumbing tap points to make disconnecting the loader easier if you want.
 

Thanks to all, lots to contemplate. I have another control station (more modern) that may work. I will have to see if it is closed or open.
mvphoto29325.jpg
 
(quoted from post at 19:56:07 01/06/19) Well if it annoys you then skip over the topic...I am trying to learn and figure out some things that are new to me and most are very helpful.
You are listed as a regular and HAD to have seen the topic before , several times .
 
(quoted from post at 09:51:15 01/07/19)
Closed center valve and plumb it into the system right? Can't use the remotes?

Why would you want to tie up the SCV remotes with the loader connection ?
 

Not that I have to defend asking questions, but I joined over a year and a half ago because I have 50's Farmalls. Recent months learning about JD's and implements.

As I said, skip over the topic because the other guys have been a really big help teaching me things I don't know about and I appreciate it.
 
I appreciate the help from everyone, but I am going to unload this loader for a couple of hundred bucks to someone who can use it.
Look for it in the classifieds and CL
mvphoto30631.jpg
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top