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John Deere Tractors Discussion Forum
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John Deere 3010 Hydraulic De-stroke

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Rick3

06-22-2020 19:00:46




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See the following URL for questions/ discussion on a JD 3010 Propane tractor that lost hydraulics to the front loader and 3 point. My main question is the manual shows a shut off screw (de-stroke) on the bottom of the pump. There is a screw there but have been told it may be the pressure adjustment screw for the pump. Ive also read that there are de-stroke screws with a T handle and some with Allen head Iíve attached pics... Could this be the de-stroke screw?

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Rick3

07-18-2020 12:31:31




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
WTW... I ordered a destroke screw and went to put it in today but it is too large... the plug right above the stroke control valve is 11/16 bolt head and the threads are about 1/2. Do you know which destroke screw I should order?



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Tx Jim

07-10-2020 08:23:18




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
I don;t know of any U-tube video's but I'm not a very good internet searcher.



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Rick3

07-10-2020 10:35:32




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Tx Jim, 07-10-2020 08:23:18  
Iíve looked high and low on YouTube and Google and havenít found much of anything even in the videos of the pump rebuilds. Thanks for the response!



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postia

06-25-2020 10:55:30




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
Quoting Removed, click Modern View to see

Not something a guy with questionable intelligence whose most sophisticated tools are a pair of vise grips should tackle, huh?
When my sagging loader bucket has me sufficiently frustrated, I'll have to get in touch with Mr. Sweeney.
Thanks again, really appreciate your guidance!



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Tx Jim

06-25-2020 08:48:24




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
Welcome to YT

Your tractor's scv probably needs 1 or more of the poppet valves replaced & valve clearance adjusted. Each scv has 4 poppet valves. Tim S a long time member of this forum can perform this task & check for leakage on his test bench



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postia

06-25-2020 07:41:28




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
Quoting Removed, click Modern View to see

Hi Jim,
SCV #2 on my 4030 goes to ~ 2400 lbs when engaging the lever but drops off to just a couple hundred lbs within a few seconds of returning the lever to neutral. Probably not coincidentally, the loader's tilt function is plugged into that SCV and tilts forward on its own when the tractor is running and lever is in neutral position. You said if pressure falls quickly then poppet valves aren't seating well. Can you be a little more specific about what I need to do to stop that SCV from losing pressure when returning lever to neutral?

Thank you!

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Tx Jim

06-24-2020 05:14:00




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
There should be pressure on gauge when control lever is moved in correct direction. When lever is moved to neutral position pressure should hold steady but may fall slowly or fast depending on how good the poppet valves are seating.



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Tx Jim

06-24-2020 03:26:09




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
Adjusting stand-by pressure with or without a hyd control lever activated should be immaterial IE the results for pressure should be the same when gauge is activated



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Rick3

06-24-2020 16:16:57




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Tx Jim, 06-24-2020 03:26:09  
Iím getting zero Psi without the lever activated and only 700 with it activated.



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Rick3

06-24-2020 04:01:40




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Tx Jim, 06-24-2020 03:26:09  
Thanks Tx. Jim! When I plugged in the gauge to the rear remote and started the tractor, there was no pressure until I engaged the lever. Should there be 2250 pressure 100% when tractor is running?



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Rick3

07-08-2020 18:02:25




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-24-2020 04:01:40  
Follow up... I was back at it over the weekend. Messing with the stroke control adjustment. Got it up to 1500 psi when engaging the lever for the rear remotes where the gauge was plugged in. When disengaged, it went back down to about 700 to 900. I also took the loader loose/ capped the connection and tried it with no noticeable change. I have a destroke screw ordered which is the next move. If that doesnít do it, Iím going to replace the stroke control valve. Do you know of any instructions or YouTube videos on how to replace the stroke control valve?

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WTW

06-23-2020 07:21:04




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
Rick, The top Photo is the pump pressure adjusting screw as Tom stated. The bottom picture is the destroking screw. Where thing are confusing is the original pump in the 3010 the destrokeing screw is on the bottom and adjuster was on top / opposite of each other in same bore. Later replacement pumps the internal stroke control valve and these two features were revered from top to bottom, like 20 series and later pumps are. If your tractor does not have the destroke screw you simply remove plug on opposite side of adjusting screw and swap it with destroking screw that is readily available. As previously stated there is two different ones used depending on pump cover. DW

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Rick3

06-23-2020 08:09:18




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 Re: John Deere 3010 Hydraulic De-stroke in reply to WTW, 06-23-2020 07:21:04  
Thank you for the clarification! It sounds like the pump on this tractor is a replacement pump... I will get a destroke screw and install in the top location.



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WTW

06-23-2020 08:50:22




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-23-2020 08:09:18  
Rick, The destroking screw is a real good thing on hard / cold starting tractors. To use it correctly, when you want to shut pump off, loosen thumb screw and you will feel it turn easy for two or three turns before you will feel it contact internal stroke control valve. Once you feel it touch the internal valve only give it and additional 1/4 of turn. Do not crank down on screw hard as it is not necessary. All you have to do is crack the stroke control valve open! This method will prolong the life of the destroking screw and prevent unnecessary damage to internal stroke control valve. Enjoy! DW

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Rick3

06-23-2020 14:48:21




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 Re: John Deere 3010 Hydraulic De-stroke in reply to WTW, 06-23-2020 08:50:22  
Thanks for the tip. Just checked my pressure at rear remote. Had 700+. Do I need to adjust stroke valve up while pressure is showing on gauge/ with lever engaged or with lever down/ disengaged and just turn 1/4 at a time?



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Rick3

06-23-2020 18:27:55




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-23-2020 14:48:21  
I think I should clarify my earlier post... my question was meant to say when adjusting the pressure adjustment screw, do you check the pressure and leave the lever engaged so you can physically see the pressure go up As you turn the screw or do you check the pressure then disengage the lever, gauge goes to zero and adjust the screw clockwise some then recheck the pressure? I tried adjusting it up with it disengaged then rechecking the pressure but probably didnít turn more than one full turn with no gain in pressure.

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WTW

06-23-2020 16:51:15




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-23-2020 14:48:21  
Rick, If standby pressure is that low good chance adjustment may not bring up to normal stall limit. Should take a turn or less to get it in range. Most often this is caused by a worn out / leaking stoke control valve. The valve and seat can be replaced in tractor if you know how to do it as I have done it many many times on many different models. The seat and valve is a assembly that is matched set. Kinda pricey but common to replace them on older tractors. If pressure cannot be achieved that is where I would go next. Set it to 2250 psi. DW

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Rick3

06-23-2020 18:39:56




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 Re: John Deere 3010 Hydraulic De-stroke in reply to WTW, 06-23-2020 16:51:15  
I envision springs and small parts flying toward my face under that tractor! LOL! What you are saying makes sense... I am wondering why the front loader really has no reaction whatsoever... maybe due to weight?! Or is it that the real problem lies with the loader valve.



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wore out

06-24-2020 17:06:28




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-23-2020 18:39:56  
[quote="CVPost-Rick3"](quoted from post at 16:16:57 06/24/20) I’m getting zero Psi without the lever activated and only 700 with it activated.[/quote]


You said "I scooped up a big load of gravel and took it/ dumped it and was going to back drag it with loader but it wouldnít respond except to go down" and "used red" offered a good suggestion that something could have happened to the loader valve.


Have capped off the feed yet to the loader valve?

Until you you this, to be absolutely sure there isn't a high pressure leak to return there your tests at the remote couplings really don't mean anything, and there's no valid reason to wrench on the pressure control on the pump.

That being said, it may well be that the loader valve is just fine and the trouble IS in the pump, but IMHO, it would be prudent to rule out the loader valve BEFORE pursuing changes to the pump.

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Rick3

06-24-2020 17:36:59




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 Re: John Deere 3010 Hydraulic De-stroke in reply to wore out, 06-24-2020 17:06:28  
Yes that is on the agenda. I wound up down thereyesterday and had a few minutes to mess with it. Got the right gauge fitting for the rear remotes and checked it. Itís probably going to be a couple weeks before Iím able to go back and take the loader out of the equation. I appreciate everyoneís help as I narrow down the cause of this issue.



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620 John

06-23-2020 06:11:18




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
Just an FYI. If you ever want to add a de-stroke screw there's two different types out there. One is longer than the other. I don't know which screw is used with which pumps but if you find a short one and you need a long one the short can be built up with a little weld and ground down to fit.



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Rick3

06-23-2020 08:11:35




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 Re: John Deere 3010 Hydraulic De-stroke in reply to 620 John, 06-23-2020 06:11:18  
Thank you for keeping me straight!



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Rick3

06-23-2020 06:43:26




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 Re: John Deere 3010 Hydraulic De-stroke in reply to 620 John, 06-23-2020 06:11:18  
Thank you!



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matthies

06-22-2020 20:40:34




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
I didn't go back and check the last post, but I would put a gauge in one of the remote couplers and check pressure, and then adjust the pump with the an allan wrench. Loosen the jam nut with a 3/4 wrench then slowly turn in the screw with allan wrench. Will need to hold lever to get pressure the the gauge. Had one similar to this, friend talked to the CSR man at the local Deere dealer, a car mechanic that didn't work with tractors much, anyway he told friend to check priority valve under the cowl/hood since he lost the hydraulics like you did, I chucked and he demanded me to look at it, so I did and found nothing, showed him the parts. So we put that back together and said lets try my fix. Did what i told you to do, hydraulics came back and was done. All I said was easy wasn't it.

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Rick3

07-10-2020 08:07:48




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 Re: John Deere 3010 Hydraulic De-stroke in reply to matthies, 06-22-2020 20:40:34  
Follow up... I was back at it over the weekend. Messing with the stroke control adjustment. Got it up to 1500 psi when engaging the lever for the rear remotes where the gauge was plugged in. When disengaged, it went back down to about 700 to 900. I also took the loader loose/ capped the connection and tried it with no noticeable change. I have a destroke screw ordered which is the next move. If that doesnít do it, Iím going to replace the stroke control valve. Do you know of any instructions or YouTube videos on how to replace the stroke control valve?

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Rick3

06-23-2020 03:09:41




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 Re: John Deere 3010 Hydraulic De-stroke in reply to matthies, 06-22-2020 20:40:34  
I guess Iím hard headed and couldnít get it through my head that was not a destroke until Tom posted last night. Just couldnít figure out why the book showed it as a destroke BUT I was laying there in bed last night and thought ďwhatís it going to hurt to try screwing it in (with gauges) and see if it does anything?Ē... then your post just confirmed my thought! I wonít be back at tractor for a couple/ maybe few days but will definitely check that and report back. Thank you for the response! Iíll let yíall know the outcome.

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tomstractorsandtoys

06-22-2020 19:07:44




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 Re: John Deere 3010 Hydraulic De-stroke in reply to Rick3, 06-22-2020 19:00:46  
No the screw you have is to adjust hyd pump pressure. Tom



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Rick3

06-22-2020 19:16:37




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 Re: John Deere 3010 Hydraulic De-stroke in reply to tomstractorsandtoys, 06-22-2020 19:07:44  
Ok good! Thank you for your reply!



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