Yesterday's Tractor Co. The Right Parts, Right Away
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
  
Minneapolis Moline Tractors Discussion Forum
Show Parts for Model:

Won't turn left (2nd question for today)

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

06-22-2014 05:58:23
174.30.100.101



Report to Moderator

I am now up to three tractors (670, and 2-602's) that are hard to turn left. My guess is the same issue in all three tractors. Two of the tractors' power steering valves leak out the cover plate vent.

(tried to bleed them, no effect)

Is it just a matter of taking them apart and replacing some seals? What do you recommend?

Thanks, Marty




[Log in to Reply]   [No Email]
jack bycraft

06-24-2014 09:07:29
207.61.178.139



Report to Moderator
 Re: Won't turn left (2nd question for today) in reply to Majorlucas, 06-22-2014 05:58:23  
Having run a 602 13.000 hrs our solution to the steering problem was to replace the actuator lever and fulcrum bushing every two years and to reverse the bushing on the alternate years. This removes lost action from the valve train. The valve movement is very slight so any lost action really fouls things up.



[Log in to Reply]  [No Email]
Majorlucas

06-24-2014 19:41:23
174.30.100.101



Report to Moderator
 Re: Won't turn left (2nd question for today) in reply to jack bycraft, 06-24-2014 09:07:29  
I will pull out the book and see what the bushing is. I'll call Welter's to see if they have them.. Thanks! Marty



[Log in to Reply]  [No Email]
pete 23

06-22-2014 16:59:26
74.33.68.123



Report to Moderator
 Re: Won't turn left (2nd question for today) in reply to Majorlucas, 06-22-2014 05:58:23  
I should have added to my post that some of those style valves did have slotted mounting holes so you could adjust . The ones used by IH did not. The ones I did see were actually on five ton army trucks. We used to adjust them but that was normally because the truck wanted to pull one way or the other. John Deere used an adjustable valve but that is a whole different set up, and they are really touchy to get just right.

[Log in to Reply]  [No Email]
Alan K

06-22-2014 12:37:19
208.83.187.208



Report to Moderator
 Re: Won't turn left (2nd question for today) in reply to Majorlucas, 06-22-2014 05:58:23  
Im not sure but might be that the valve is not centering properly, allowing it to have assist in one direction and not the other. You could possibly loosen the 4 Allen cap screws slightly and try moving the valve in a couple different positions to see if it makes a difference. They can be very tricky to get to work properly. MMDEL hopefully will chime in, he knows a lot about those steering systems.

[Log in to Reply]  [No Email]
pete 23

06-22-2014 10:54:03
74.33.68.123



Report to Moderator
 Re: Won't turn left (2nd question for today) in reply to Majorlucas, 06-22-2014 05:58:23  
Looks like those tractors use the same steering valve as a IH Farmall 560 or 460. The splined steering shaft on them has to move in and out depending on direction of turn. This then actuates the valve. So, if anything prevents this from happening no power steer or only partial if not moving full width. If that is ok, problem is in the valve. Usually loose nut, or bent washers on spring end. But, I bench test with air to see if I get equal flow for both directions when manually moving spool. Have added a washer in just the right spot to equalize the flow. Unless, of course , you have leak internal cylinder.

[Log in to Reply]  [No Email]
Majorlucas

06-22-2014 11:52:10
174.30.100.101



Report to Moderator
 Re: Won't turn left (2nd question for today) in reply to pete 23, 06-22-2014 10:54:03  
Sounds like I need an o-ring kit and some washers. Thanks, Marty



[Log in to Reply]  [No Email]
jr1983

06-22-2014 11:43:32
70.194.99.187



Report to Moderator
 Re: Won't turn left (2nd question for today) in reply to pete 23, 06-22-2014 10:54:03  
Does anyone know if that uses the same pump set up as a 900 gas? If so there's a plunger in the pump that sticks. Not sure what it does just know you can push it to center from the outside and the tractor will steer correctly till it sticks again.



[Log in to Reply]  [No Email]
Majorlucas

06-22-2014 11:50:38
174.30.100.101



Report to Moderator
 Re: Won't turn left (2nd question for today) in reply to jr1983, 06-22-2014 11:43:32  
The 670 (not the 670 Super) uses oil from the hydraulic system (so no separate pump) Thanks



[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