Welcome! Please use the navigational links to explore our website.
Company Logo (800) 853-2651 Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Allis Chalmers Discussion Forum
:

WD hydraulic pump rebuild

Welcome Guest, Log in or Register
Author 
Jeremy

09-22-2003 14:14:38




Report to Moderator

I have a 1952 WD with plunger type hyd. pump. It lifts good but will not go down. It started this all of the sudden. i am assuming the release valve is sticking, not allowing to releive pressure allowing the rams to go down. I have a manual, but it does not give a very good description. I am mechanically able but do not want to tear into this pump and learn as I go since I do not know th availability of replacement peices or replacement pumps. If any one could give ANY advice or know where I can get parts, instructions, replacement pumps, or someone that would interrested in rebuilding this pump I would greatly appreciate it.

[Log in to Reply]   [No Email]
John Rogers

09-22-2003 19:09:36




Report to Moderator
 Re: WD hydraulic pump rebuild in reply to Jeremy, 09-22-2003 14:14:38  
Hi,Jeremy: Try turning the screw located at the front end of the pump into the pump body as this will shift the valve rack to an unload position. This screw is part way down on the pump body between pump and the clutch housing. If that don't work check the linkage to the hold control valve on top of pump. John in Mo.



[Log in to Reply]  [No Email]
Sid

09-22-2003 18:46:15




Report to Moderator
 Re: WD hydraulic pump rebuild in reply to Jeremy, 09-22-2003 14:14:38  
Do the arms go down when the tractor is not running? I had this problem with my WD and it was in the linkage. I would check that first. If you look underneath the tractor you will see a flat piece with a slot in the upper end. This is the drawbar control rod. Notice the somewhat triangular piece that it connects to. This piece is on a shaft that enter the pump body. On mine where this piece fits on the shaft was loose and allowing the shaft to turn freely and thus the linkage was not turning the shaft in order to lower the lift. This may not be your problem but your description is like my problem especially the all of a sudden part. I hope I have been able to explain this so that you have an idea what to look for and will not have to tear your pump apart. Maybe you can look at the manual while reading this and it will help understand.

[Log in to Reply]  [No Email]
Scott A, MO

09-22-2003 17:59:34




Report to Moderator
 Re: WD hydraulic pump rebuild in reply to Jeremy, 09-22-2003 14:14:38  
Jeremy, I have a 49 WD, and just finished going thru my pump. All the o-rings and gaskets were still available at the local AG-Co Dealer. Tear down on a clean bench, and mark how everything came out and where it came out if you don't have picture breakdown from a manual. I used 400 wet and dry sanding paper with WD-40 for lubrication to polish all the valves and some of the bores. It worked like a dream when done. Good luck.

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

Hop to:


TRACTOR PARTS TRACTOR MANUALS
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. [ About Us ]

Home  |  Forums


Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce ... [Read Article]

Latest Ad: Looking for a Farmall super h steering housing the big cast piece in front [More Ads]

Copyright © 1997-2022 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