JD 2040 Hydraulic Question

ditchwitch

Well-known Member
Are you supposed to lift and lower implements with the Rockshaft lever solely?? I have been using the other lever for up and down and not even using the Rockshaft lever at all. I have tried to use the Rockshaft Lever to just try but it dont do anything. I understand there is a lever on the right side at transmission level that has 4 positions for Load,Depth,Load/Depth cant remember the other one right off my books are at home. When i do try to use the Rockshaft Lever the engine does go under load and i hear the hydraulics but it just sounds like hydraulics are hitting the wall and doing nothing.
 
The "other lever" . Well what pray tell is the "other lever" ? The SCV lever is affecting operation of the rockshaft ? is there anything connected to the SCV ? Is the load and depth lever controlling the rockshaft raising and lowering. Which 2040 is this ? There is a three cylinder 2040 and a four cylinder 2040.
Call the nice folks at 1-800-522-7448 for real JD operator's and service manuals on CD or hard copy. To replace the lost or damaged books. All the info from all the serial number plates.
 

It really makes no difference which 2040 ditchwitch is referring to be it 3 cyl or 4 cyl powered or open or closed center lever(parts key 1) is the intended 3 pt control lever and no other lever. Other lever under seat alters the L/D mechanism.
mvphoto21019.gif
 
Thats the other Lever i was referring to the one in your picture thats the one i use to make the
implements go up and down . The other lever as i read is called the rockshaft lever. The rockshaft
lever has no effect other than putting the engine under load when i move it back or forth. Question
is are you supposed to use the rockshaft lever soley to raise and lower implements.
 
I just got my books friday i ordered but there at home so i didnt remember the name of the lever. Its
a 2040 3 cyl diesel, utility tractor.
 
Lever(parts key 9) is only utilized to change setting L/D mechanism but isn't designed to control 3 pt hitch. If L/D control lever puts engine under load when position is changed then L/D mechanisms needs adjusted as outlined in the JD service manual.
mvphoto21023.gif
 
Thats actually where i got my book from . you give me that number little over a week ago and i
ordered them right away. Im still trying to figure out weather its a closed or open system and what
that actually means. This tractor is nothing like my 135 massey ferguson. The JD tractor is a heavier
duty tractor and im trying to figure it out. I dont quite understand the L/D mechanism yet. But i do
know enough to know it aint working properly.
 
The L/D lever does not put the tractor under Load . When i move the Rockshaft lever is when the
tractor goes under load. It dosent matter which position the L/D lever is in when i move the
rockshaft lever back and forth tractor just goes under load.
 

OK you stated tractor has a 3 cyl engine so if serial number is below 266750 it's an open center & if serial number is 266750 and above it's a closed center
 
That lever #1 in the pic. is to control the 3 pt. hitch ( rockshaft )up is up and down is down. This is only gravity down no pressure.
I think your tractor also had rear hyd. quick couplers IIRC from the pictures. Without anything plugged into them if you move the control lever for them it will load the engine on an open center system which I think you had.
 
Mike you are correct ,it does have rear hyd. quick couplers. So in saying that does that mean the Rockshaft Lever is for whatever is plugged into the rear hydraulic couplers and nothing else.
 
(quoted from post at 12:14:26 05/18/15) Mike you are correct ,it does have rear hyd. quick couplers. So in saying that does that mean the Rockshaft Lever is for whatever is plugged into the rear hydraulic couplers and nothing else.

Rockshaft control lever(parts key 1 in 1st photo) has zero to do with anything plugged into rear breakaways as in NADA.
 
(quoted from post at 08:31:03 05/18/15) The L/D lever does not put the tractor under Load . When i move the Rockshaft lever is when the
tractor goes under load. It dosent matter which position the L/D lever is in when i move the
rockshaft lever back and forth tractor just goes under load.

Sounds as if rockshaft control valves have too much clearance which can be adjusted without R&R of rockshaft housing by following the adjustments outlined in a JD tech manual
 
The rockshaft lever is to raise and lower the three point hitch. Remote outlets have separate valve and lever. Line from movie Cool Hand Luke: "What we have here is a failure to communicate."
 
Ok the 2nd picture is the best for reference. The lever i use to raise and lower implements is the lower lever (key part 1 of your picture). The lever behind that is what is called the rockshaft lever ,Thats the lever that does nothing but put load on the engine. It will not raise or lower the implement. I thought it was for maybe whatever you had hooked up to the quick disconnect couplings on the back of the tractor. You told me thats not so. The poster Cornerpost says its supposed to raise and lower the implements. I understand that even from the books now. What i cant figure outis why its not.
 
The taller lever closest to seat [green paint on it] operates [scv] rear outlet coupler on back of tractor only, where you would plug in hoses for a remote hyd. cyl. And yes if operated with out hyd. cyl. it will labor pump , & noticeably pull on motor... Shorter black lever with [slide positioner] operates 3pt. on rockshaft only... .. 3pt. will operate 'differently' with load&depth levr in dif. positions ....
 
Ok so your calling the lever with the side petitioner the rockshaft lever ??? I was under the impression the taller lever closer to the seat was the rockshaft lever. Starting to make some kind of sence now. So the lever with the petitioner is the rockshaft lever and it works in coralation with the Load/Depth lever on the side of the transmission (lower lever with 4 positions). And the taller lever closer to seat has no coralation with Load/Depth lever and no coarlation with lever with petitioner. Is this correct. This tractor is new to me just less than 3 weeks. Just trying to figure it out. My manuals come in last week and im trying to get in those also. Thanks again for all yalls help
 

I would have just followed the hydraulic lines.
The shifter boots need replacing or the transmission will fill with rain water and ruin the brakes.
 

I would have just followed the hydraulic lines.
The shifter boots need replacing or the transmission will fill with rain water and ruin the brakes.
 
They were good till i started moving the lever. They were so dry and brittle they just
fell apart. Ill have to order me some new ones for sure
 

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