Yesterday's Tractor Co. Compare our Prices For Parts
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
Tractor Manuals
Tractor Parts
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
  
Ford Tractors Discussion Forum
Show Parts for Model:

Re: 641 still loses Hydraulics prime

[Show Entire Topic]  

Author  [Modern View]
Kurt-NEPA

11-25-2013 06:41:37
70.44.176.213



Report to Moderator

Hi Bill,

I was reading you other post about your pump too. Its starting to sound like have blown the seal on your pump. Usually that seal will wear a groove in the wobble shaft to. When that happens, your pump pulls air instead of oil into the pistons. If you want to try to replace that seal you can do it without special tools, but it will take a shop press.

I would plan on replacing the wobble shaft, bearing cup and cone, needle bearing and seal. They are all available after market for a reasonable price.

Getting the seal out is the hard part, it is behind the bearing cup that is pressed in. You can use a welder an put a bead of three on the cup and it usually pops out or grind the cup down to nothing in several places than hook that cup out. One that is done you get the seal and needle bearing out. They all press back in. The wobble shaft has the bearing pressed onto it, that is where the shop press comes in.

If you are up to it, we can help.

Also, I saw the post about gear shearing the key and spinning on the wobble shaft. That's easy to check with the pump off, did you check it when you overhauled the valves?

Kurt

[Reply]   [No Email]
William Fissell

11-25-2013 06:52:43
67.187.127.124



Report to Moderator
 Re: 641 still loses Hydraulics prime in reply to Kurt-NEPA, 11-25-2013 06:41:37  
Kurt,

thanks for your reply.

- I think I have the "ball bearing" pump, not the "roller bearing" pump, if that matters.

- I didn't disassemble the wobble plate, but I did grab the gear and the wobble plate and they seemed locked together pretty well.

- I have the FO-20 and the Ford manual.

- Will re-tear it down.

BIll



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