Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

When its cold


 
Post new topic    
View previous topic :: View next topic  
Author Message
davyfireball
Regular


Joined: 17 Feb 2008
Posts: 197


Report to Moderator

PostPosted: Tue Feb 13, 2018 9:06 am    Post subject: When its cold Reply to specific post Reply with quote

When it's cold it takes the 100% mineral oil a long time to lift the blade when the position control lever is disengaged. But when I engage it- it will lift the blade at once. Is something out of wack. I just put a new hyd cyl on and didn't notice any bent linkage. After 4 driveways it will start to work without disengaging lever.
 
Back to top
View user's profile
formulaross
New User


Joined: 13 Feb 2018
Posts: 5


Report to Moderator

PostPosted: Tue Feb 13, 2018 9:54 am    Post subject: Re: When its cold Reply to specific post Reply with quote

My guess is your issue is related to the high oil viscosity when cold and the design of the 9N/2N/8N hydraulic pump. Harry Ferguson designed the N series with a Scotch yoke type pump with a displacement of 1 cubic inch per PTO revolution. Only when hydraulic flow is required does a little valve (like the intake/exhaust valve on your Briggs lawn mower) get opened to allow the pump to suck in oil. When things are status quo (no implement required to be raised) the pump doesn't pump anything, parts move but nothing gets pumped because the intake valve is closed. The position control lever changes the mechanical feedback to that intake valve. I suspect your problem is the mechanical feedback is barely allowing the intake valve to open and the thick oil when cold is just really hard to suck into the pump. When warmed up, the thinner oil is easier to suck in. I had the opposite problem when I put an engine-driven hydraulic pump on my 8N. Lowering the implement requires a similar small exhaust valve to open to allow fluid to leave the lift cylinder. The high output pump that I drove off the engine would immediately raise my implement to the max and hold it there. My solution was to add a variable flow control valve so I could control how much external hydraulic flow that I was adding to the 8N hydraulic system. The excess flow was routed back to sump through some quick disconnects at the back (and a return filter) so I could run a hydraulic log splitter off the tractor when needed. Also, are you using the lower viscosity hydraulic transmission fluid instead of the high viscosity 1950's spec oil? I've had no issues using the HTF.
 
Back to top
View user's profile
davyfireball
Regular


Joined: 17 Feb 2008
Posts: 197


Report to Moderator

PostPosted: Tue Feb 13, 2018 10:22 am    Post subject: Re: When its cold Reply to specific post Reply with quote

I'm using that thick 90 wt molasses. Just wondered why it would raise with position control -Thanks for the explanation.
 
Back to top
View user's profile
L.Fure
Tractor Expert


Joined: 17 Jun 2013
Posts: 2321
Location: Wisconsin

Report to Moderator

PostPosted: Tue Feb 13, 2018 11:50 am    Post subject: Re: When its cold Reply to specific post Reply with quote

davyfireball wrote:
(quoted from post at 19:22:37 02/13/1Cool I'm using that thick 90 wt molasses. Just wondered why it would raise with position control -Thanks for the explanation.


If you are going to use the heavy oil in the winter you should park the tractor in your bedroom during the night. Very Happy If you poke a heater under your tractors rear end for awhile before you use it in cold weather it should help the 90w flow better.
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Ford 9N, 2N, 8N All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
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 ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

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