Yesterday's Tractor Co. New Parts for Old Tractors
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
John Deere Tractors Discussion Forum
Show Parts for Model:

4020 rear main seal replacement

Welcome Guest, Log in or Register
Author 
jpfromok

10-16-2004 21:19:49
66.141.74.212



Report to Moderator

How dificult is it to replace the rear main seal? How do you remove the wear ring from the crankshaft do you need a special tool to reinstall it and the seal? A john deere mechanic told me not to mess with it unless it was really leaking. I am replacing the clutch and pto bearings. The manual I bought is not very helpfull with how to do any of the procedures.




[Log in to Reply]   [No Email]
Roy Suomi

10-17-2004 08:22:05
68.73.190.148



Report to Moderator
 Re: 4020 rear main seal replacement in reply to jpfromok, 10-16-2004 21:19:49  
JP, Get the engine ready for seal installation. Then call your local Deere store, have them come out on a service call to do install of seal.What could it cost?? It only takes 10 minutes at the most to install that seal with the proper tool..Mileage plus an hour minimum labor..



[Log in to Reply]  [No Email]
Dale in IN

10-17-2004 06:53:53
63.185.0.189



Report to Moderator
 Re: 4020 rear main seal replacement in reply to jpfromok, 10-16-2004 21:19:49  
Your JD mechanick is right. If it did not leak do not change it. I changed mine 2 years ago and it had not leaked in The 28 years that I had owned it. With in 6 months after replacing it with the new type seal it began to leak.



[Log in to Reply]  [No Email]
msb

10-16-2004 21:48:52
12.203.216.208



Report to Moderator
 Re: 4020 rear main seal replacement in reply to jpfromok, 10-16-2004 21:19:49  
Unless Deere has recently change the design, it takes a special tool to install the seal.A dealer will be the only one that has the tool.Maybe you could borrow one.I have always used a chisel and hammer to lightly stretch the wear ring and then used a crows foot to pry it off.Tap the chisel in several places around the diameter of the crank.Be sure to not damage the crankshaft.Its very easy to do.Deere says it is very important to leave the new wear ring inside the seal when installing it.The seal and the wear ring are pressed onto the crankshaft together as a unit with the special tool.I,too, would replace the seal while the tractor is split if it hasn't been replaced for a while.If the ring doesn't have any sealant on the inside,I would give it a VERY light coat of Permatex.

[Log in to Reply]  [No Email]
jpfromok

10-17-2004 06:15:33
66.141.75.106



Report to Moderator
 Re: 4020 rear main seal replacement in reply to msb, 10-16-2004 21:48:52  
Thanks for your information I will give it a try I was wondering how important it is to keep the seal and wear ring together for installation. I thought I would install the wear ring then the seal. I will see if I can borrow a tool and keep them both together. Thanks again



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 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