Hi All, I am new to the forum and John Deere tractors. I just purchased a 1971 JD 2020 to be used primarily for mowing. Pretty decent tractor; however, there are some issues that I need to resolve. No. 1 being that the PTO won't engage while the tractor is running. Depressing the clutch fully does not disengage the internal pto drive from spinning. No. 2 is that the hydraulic pump squeals when the steering wheel is started turning. The steering wheel also has a rotational lift of about 3/8" when turned. It didn't do this when I checked it out at the dealership, so something in the column must have let go. No.3 General Servicing of the hydraulic system. Any recommendations on which Manual to purchase. I have seen many for sale- John deere technical and service manuals, IT shop manuals...? Which is best....Thanks
John Deere 2020
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beenthere
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:welcome: to TBN
Link to parts and some help with part locations.. enter your model to get to the correct section(s) for your model.
https://partscatalog.deere.com/jdrc/
Sounds like the two-stage clutch for the PTO is stuck together.. easiest way I know is to run the PTO with a load (drop the mower blades into a mound of dirt) with the clutch pedal in full disengaged position. This has worked for me on two stuck tractors that were like this.
Be sure the linkage is right and that the two-stage clutch to disengage the PTO is in full "down"/"forward" position.
Most complete manual is, IMO, the JD service tech manual.
Lastly, browse as much info as possible from the vast knowledge in the archives on the 2020.. use the Google search tab above the TBN search tab for best IMO results.
Also the "Similar Threads" suggested at the bottom of every thread.
And check back here for other forum members that can and likely will offer good info for you to sort through. Keep asking questions to help others help you.
Link to parts and some help with part locations.. enter your model to get to the correct section(s) for your model.
https://partscatalog.deere.com/jdrc/
Sounds like the two-stage clutch for the PTO is stuck together.. easiest way I know is to run the PTO with a load (drop the mower blades into a mound of dirt) with the clutch pedal in full disengaged position. This has worked for me on two stuck tractors that were like this.
Be sure the linkage is right and that the two-stage clutch to disengage the PTO is in full "down"/"forward" position.
Most complete manual is, IMO, the JD service tech manual.
Lastly, browse as much info as possible from the vast knowledge in the archives on the 2020.. use the Google search tab above the TBN search tab for best IMO results.
Also the "Similar Threads" suggested at the bottom of every thread.
And check back here for other forum members that can and likely will offer good info for you to sort through. Keep asking questions to help others help you.
Zebrafive
Super Member
RE: No3, Hydraulic servicing. Check your shift boots for cracks/tears. This where water primarily enters the hydraulic system. Drain the system. Clean the sump screen. New transmission filter. Use JD HyGard transmission fluid, about 10 gallons.
Tx Jim
New Member
Welcome to TBN
IIRC it's normal for steering wheel to rise/lower a small amount when it's turned. Steering shaft moving up/down operates internal steering control valves. Ditto on dual stage pto clutch being stuck to pressure plate.
IIRC it's normal for steering wheel to rise/lower a small amount when it's turned. Steering shaft moving up/down operates internal steering control valves. Ditto on dual stage pto clutch being stuck to pressure plate.
On your pto, are you sure you have a 2 stage clutch? Independent pto was a n option on the 2020. If it has that, there would be a lever between the 2 transmission shift levers to engage pto. Lift up to engage clutch and push down to release.
Finally got into the hydraulic system...hydraulic oil is nasty. I also took off the right side bushing plate for the steering shaft while investigating the steering play. There's a bunch of crud in there too. I removed and cleaned the screen in the pump (it wasn't too bad). All of this to ask, once I replace the hydraulic filter and oil, should I run the tractor for a short period, then replace the filter again to try purging as much crud as I can?
Tx Jim
New Member
I suggest to check /clean trans oil screen(key 30) & check to be sure hyd filter relief valve(keys 18-20) isn't stuck in open position. If you haven't already performed this task you need to check gearshift handle boots for cracks. Cracks in shift boots allows water to enter trans if tractor is stored outside in the weather
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How many drain plugs did you remove for draining? There are 2. One is on right side near lower draft link, and the other is further forward and in the center of the case. Probably should be between 7 and 8 gallons. Also I was thinking about your pto problem. Can you feel 2 stages as you push in the pedal? There are 2 styles of pedals on 2020 depending on serial number. one has 2 holes in pedal where adjustable link connects. If you have 2 holes, install the adjustable link in the hole furthest from the pivot pin. If you have the single hole version, there is an adjustable bracket that limits how far the pedal comes up in the released position. Make sure to loosen the bolt in the bracket and then pull the pedal back as far as it will go. this is proper position for dual stage clutch. tighten bolt in this position. If you can post pictures, I can help determine if it is correct if my description is not clear.
I didn't see the drain plug back by the draft link...thanks. I am not exactly sure what you mean about the clutch adjustment. The pedal is held in the full back position by the return spring. I adjusted fork length to where I have about a quarter inch of swing at the clutch shaft lobe on the side of the bell housing. Mine is a single hole clutch pedal. I don't notice 2 stages when I push the clutch. I have not hooked up my brush hog and attempted what another forum member suggested on how to free up a stuck pto clutch. Looking for how to upload a photo. Thanks
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Tx Jim
New Member
Does your 2020 have hyd reverser? Hyd reverser clutch linkage in parts catalog is the only type that I see that has the slot similar to your photo. After more thought I think your tractors version of arm(key 3) isn't shown as a photo in PC.
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Zebrafive
Super Member
In your picture, which you took from the "inside" looking "out", you can see the end of the bolt (not the head) to the left of the clevis. You can also see part of the slot the bolt goes through. So, if you loosen the bolt, as jd110 said, you will be able to pull back on the clutch pedal, then tighten the bolt.
Zebrafive
Super Member
Jim, IIRC, that adjustment was for non reverser tractors, doing loader work, when a lot of clutching was done and no need to disengage the PTO clutch. It shortened the clutch pedal travel.
Tx Jim
New Member
Zebrafive
I agree I'd just forgotten. Danged Old timers was engaged!
I agree I'd just forgotten. Danged Old timers was engaged!
That did it! I can feel the second stage. Thanks. I can't run it right now to check it out due to other repairs/maintenance going on. Why is there not a pin to prevent slippage of the pedal. It seems like it potentially be an ongoing point of adjustment.
Zebrafive
Super Member
If the PTO clutch has not been used in long time it may be stuck and not disengage.
I would say that is likely the case. I engaged the pto lever, fully depressed the clutch and tried turning the pto shaft...didn't turn. Guessing that I will have to use the method outlined by other members to free it.
