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

Discussion Forum

Cold Hydraulics on A/C 7000

Welcome Guest, Log in or Register
Aaron Baugher

01-03-2002 15:55:16

Report to Moderator

My dad has a 7000 that's had a cold-weather problem with the hydraulics for a few years now. When it gets cold (below 20, I guess), the hydraulics don't work until the tractor has warmed up for 15-20 minutes. Also, while it's warming up, there's an intermittent noise that sounds like the hydraulic pump is straining -- the same noise you get when you push the level to lift something and hold it there even when the lift has reached its limit.

Also, if you hold the hydraulic hose coming out of the pump, it throbs along with that noise like the pump is struggling. This goes on and off every few seconds until the tractor is fully warmed up.

We've replaced the hydraulic oil and filters, with no effect. Any other ideas what we should look at?

Thanks, Aaron.

[Log in to Reply]   [No Email]

01-03-2002 17:31:22

Report to Moderator
 Re: Cold Hydraulics on A/C 7000 in reply to Aaron Baugher, 01-03-2002 15:55:16  
the noise you are hearing is probally the pump sucking air. when you changed the oil did you use a good grade hydrulic oil? also check the screen on the end of the filter i have seen them get pluged and varnished. i have also seen the suction lines get loose and damaged.

[Log in to Reply]  [No Email]

01-03-2002 18:40:57

Report to Moderator
 Re: Re: Cold Hydraulics on A/C 7000 in reply to brent, 01-03-2002 17:31:22  
Brent is right, the noise is cavitation. That is common on lots of construction equipment i have seen that has heavy oil in it. I agree you should probably use a trans-hydraulic fluid from the Farm Store, it is normally equivalent to 20 wt oil. This fluid has special agents for water and anti foaming. If you are already using this and it still cavitates go to straight 10 wt hydraulic fluid. The noise is tearing up your pump. Long term it will be detrimental. Since is does not happen when warmed up that should eliminate most other possible causes.

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

Hop to:

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

Copyright © 1997-2023 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