(800) 853-2651
SHOP NOW

Recent content by jd730des

Yesterday's Tractor Forums
  1. J

    '69 4020 3pt control valve leak

    looked down inside the fill neck and didnt see any spraying
  2. J

    1969 JD 4020 Sloppy Steering

    Great article in Green Magazine a month or so back on how to fix this using JB Weld.
  3. J

    '69 4020 3pt control valve leak

    I found this description on another page and wondering what Oring he is describing-size of a pencil eraser? [b:393827618a]I had the same problem. Mine started while rolling hay. I lost power steering, lift arms and pressure to baler tailgate. I also had a whistling noise or fluid blow-by in...
  4. J

    '69 4020 3pt control valve leak

    I found this description on another page and wondering what Oring he is describing-size of a pencil eraser? [b:85fa454462]I had the same problem. Mine started while rolling hay. I lost power steering, lift arms and pressure to baler tailgate. I also had a whistling noise or fluid blow-by in...
  5. J

    '69 4020 3pt control valve leak

    because the rockshaft control valve housing gets very hot along with the brake valve which indicates a high pressure fluid leak somewhere.
  6. J

    '69 4020 3pt control valve leak

    I checked the pressure at the SCV and it is good, i am not getting good smooth flow from the pump- it is pulsing from what i believe is one or more grenaded valves in the pic below.
  7. J

    '69 4020 3pt control valve leak

    Because i found pieces of the valve #23 in the pic lodged in the priority spool valve. Pump is making pressure but volume is decreased
  8. J

    '69 4020 3pt control valve leak

    I have a '69 4020 and am chasing internal hyd leaks. Ive had my steering valve and both SCVs rebuilt by Tim Sweeney and now i think i have a leak in the 3pt control valve. I know i have problems with my hyd pump i'm pretty sure its lost output from 3 pistons. I am prepping to tear into it and...
  9. J

    4020 rockshaft piston

    Thanks
  10. J

    4020 rockshaft piston

    Can you replace the rings on the rockshaft piston without taking the rockshaft housing off of the tractor? could it be as simple as removing the cover and pushing the piston out?
  11. J

    ''69 4020 synchro hyd issues

    Have a '69 syncro 4020 and i think i have a leak in the rockshaft control valve or rockshaft housing. Any ideas where to start? what components in the rockshaft control valve or housing are known to leak? I have read on here some folks take a plug out of the back and can see oil leaking inside...
  12. J

    '69 console 4020 electrical questions

    Thanks someone must have swapped over dual headlight fenders since thats what I have. Guessing i can use the non-resistor light switch. Planning on installing LED spot and flood lights anyway.
  13. J

    '69 console 4020 electrical questions

    After having 2cylinders for all my life i finally have moved up to a 4020D ser# in the 208xxx range. Having to learn a whole new system and have some questions for the group. The tractor has a new style gear reduction starter and single 12V automotive battery installed. I believe i need...
  14. J

    730D wide front drag links

    I have bent up the drag links on my 730D wide front, and was wondering if anyone had ever used drag links from another tractor maybe a 2010 or 3010? These are the square bars with the dog leg, any reason that the round links wouldnt work? THe price from deer is outrageous and the aftermarket...
  15. J

    2 cylinder diesel injector service

    Update took a look at it today and no leaking pumps or split lines, pumps working good, pulled out the right hand injector and reconnected it and found two out of the six holes plugged up. Swapped in another injector and runs like a champ. Thanks for all the help Howard
See more
Yesterday's Tractor Forums
Buy Tractor Parts Here Buy Tractor Manuals Here

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.

Copyright © 1997-2025 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top