Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

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

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

Research & Info
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

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

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
John Deere Tractors Discussion Forum
Show Parts for Model:

Re: 4020 hydraulic problem with loader

[Show Entire Topic]  

Welcome Guest, Log in or Register
Author  [Modern View]
Roger in Iowa

03-15-2013 07:04:21

Report to Moderator

Both the original three spool valve and the new one are/were convertible. Problem occurred with the old valve too.

I am thinking there is something wrong with the tractor side of things.

Would a clogged or partially clogged filter or screen do something like this. Why would you have to feather the valve it it work okay, except for down. When moved to full stroke of valve the hydraulics DIE. Like something is telling the front pump not to pump at all.

When at 1900 standby the front pump does go quiet.

Thanks for any input/help. Will remove return hose and check for flow, but do not believe there is any as front pump goes quiet.

[Log in to Reply]   [No Email]
Tx Jim

03-15-2013 09:15:40

Report to Moderator
 Re: 4020 hydraulic problem with loader in reply to Roger in Iowa, 03-15-2013 07:04:21  
Quoting Removed, click Modern View to see

Removing the return hose as I previously outlined will establish if valve has closed center plug installed correctly. Have you thought about plumbing loader valve into another tractor with closed center hyd's to determine if hyd problem persists??

[Log in to Reply]  [No Email]
Roger in Iowa

03-15-2013 10:32:26

Report to Moderator
 Re: 4020 hydraulic problem with loader in reply to Tx Jim, 03-15-2013 09:15:40  
No. Unfortunately hind site is 20/20. Harder to do now since plumbing is hard wired so to speak.


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

Hop to:

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). 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. [ About Us ]

Home  |  Forums

Copyright © 1997-2016 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