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 

9N Lift cylinder question


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


Joined: 11 Jul 2017
Posts: 30
Location: Kailua Kona, Hawai'i

Report to Moderator

PostPosted: Sat Jan 13, 2018 11:32 am    Post subject: 9N Lift cylinder question Reply to specific post Reply with quote

So my friends' 9N (year unknown) won't hold the load up. Got the lift cylinder and piston out and the oddest thing. The piston is a 3 groove type, but there are O-rings installed, not metal ones. Piston miked out to 2.4995. Cylinder bore at 2.5070 at the opening. Using a in/out caliper, don't have anything to reach down and check middle or end. Any thoughts on this weird setup? Tempted to replace both and be done with it. Should I go with the 3 groove and metal rings or the one groove and O-ring? The cylinder doesn't look to bad, couple of inch long scratches that may hone/polish out.
 
Back to top
View user's profile
R Geiger
Tractor Guru


Joined: 19 Apr 2009
Posts: 4562
Location: Banks, Oregon

Report to Moderator

PostPosted: Sat Jan 13, 2018 11:52 am    Post subject: Re: 9N Lift cylinder question Reply to specific post Reply with quote

If you go to the o ring piston I would replace piston and cylinder. O rings do not like a rough finish. you could just put new metal rings in what you have.
 
Back to top
View user's profile
Bruce (VA)
Tractor Guru


Joined: 24 Feb 2003
Posts: 16332
Location: Old Church VA

Report to Moderator

PostPosted: Sat Jan 13, 2018 12:36 pm    Post subject: Re: 9N Lift cylinder question Reply to specific post Reply with quote

If you have more money than time (or skill) just buy a new cylinder. It's very easy to hone out that cylinder too far.
75 Tips

 
Back to top
View user's profile
TheOldHokie
Tractor Guru


Joined: 08 Apr 2005
Posts: 9449
Location: Myersville, MD

Report to Moderator

PostPosted: Sat Jan 13, 2018 12:42 pm    Post subject: Re: 9N Lift cylinder question Reply to specific post Reply with quote

jklightner wrote:
(quoted from post at 15:32:39 01/13/1Cool So my friends' 9N (year unknown) won't hold the load up. Got the lift cylinder and piston out and the oddest thing. The piston is a 3 groove type, but there are O-rings installed, not metal ones. Piston miked out to 2.4995. Cylinder bore at 2.5070 at the opening. Using a in/out caliper, don't have anything to reach down and check middle or end. Any thoughts on this weird setup? Tempted to replace both and be done with it. Should I go with the 3 groove and metal rings or the one groove and O-ring? The cylinder doesn't look to bad, couple of inch long scratches that may hone/polish out.


The piston is spot on and was probabably replaced when the o-rings were added. I'll bet it was leaking down and someone decided he'd do a cheapie Rolling Eyes

The cylinder is .007 over. That is a LOT of wear and I am not surprised it still leaks - especially with the ill-fitting rubber o-rings.

I would not reuse either and replace both piston and cylinder using the o-ring piston. Do it right and you won't have to worry for decades to come.

TOH
 
Back to top
View user's profile
Tim PloughNman Daley
Tractor Expert


Joined: 18 Sep 2004
Posts: 2022


Report to Moderator

PostPosted: Sat Jan 13, 2018 12:45 pm    Post subject: Re: 9N Lift cylinder question Reply to specific post Reply with quote

It depends on how badly worn the cylinder is from the original steel ring-type piston. I never heard of someone putting rubber O-Rings on an original 3-ring piston before. It could be why it leaks. The steel ring style piston groove diameters(s) and the NAA rubber O-Ring groove diameter are not the same. The NAA style piston that uses the rubber O-Ring also uses a leather backup-washer/wiper. Me? What I would do since I had to pull the top cover off anyway, is to replace bot the cylinder and the piston with new. Evaluate if the pump needs to be pulled too and rebuilt -why not, you've gone this far? That way it'll all be good for many years to come before it needs to be yanked again. I'd stay with the NAA piston, rubber O-Ring, and leather backup washer too, but if you want/need a new 3-Ring piston, I have a new one I'd gladly part with. Email is open...

Tim Daley(MI)
 
Back to top
View user's profile
jklightner
Regular


Joined: 11 Jul 2017
Posts: 30
Location: Kailua Kona, Hawai'i

Report to Moderator

PostPosted: Sat Jan 20, 2018 8:10 am    Post subject: Re: 9N Lift cylinder question Reply to specific post Reply with quote

CVPost-Tim PloughNman Dal wrote:
(quoted from post at 11:45:44 01/13/1Cool It depends on how badly worn the cylinder is from the original steel ring-type piston. I never heard of someone putting rubber O-Rings on an original 3-ring piston before. It could be why it leaks. The steel ring style piston groove diameters(s) and the NAA rubber O-Ring groove diameter are not the same. The NAA style piston that uses the rubber O-Ring also uses a leather backup-washer/wiper. Me? What I would do since I had to pull the top cover off anyway, is to replace bot the cylinder and the piston with new. Evaluate if the pump needs to be pulled too and rebuilt -why not, you've gone this far? That way it'll all be good for many years to come before it needs to be yanked again. I'd stay with the NAA piston, rubber O-Ring, and leather backup washer too, but if you want/need a new 3-Ring piston, I have a new one I'd gladly part with. Email is open...

Tim Daley(MI)


Whoever did it didn't use the NAA o-rings. I think they probably went to NAPA and just found some to fit. They also used RTV instead of a gasket on the cover. Got my parts from YT, didn't realize the gasket set came with the o-ring and washer, and I had ordered them separately. Now I have spares. Also found the draft control plunger bent, the spring plate buggered up, the bushing that goes inside the draft control spring cracked, and no felt washer. Got some parts coming from MO where a guy had a lot of lift cover parts on eBay for $20. The owner and I talked about overhauling the pump, but the "if it's working don't mess with it" won over the "as long as we're in here this far" idea.
 
Back to top
View user's profile
jklightner
Regular


Joined: 11 Jul 2017
Posts: 30
Location: Kailua Kona, Hawai'i

Report to Moderator

PostPosted: Fri Feb 02, 2018 5:40 pm    Post subject: Re: 9N Lift cylinder question Reply to specific post Reply with quote

Just a note to close this out.
New Lift cylinder and piston. Didn't realize that the o-ring and leather washer came with the gasket set, so I had ordered separately. Now he has a spare set. Washer went on easy thanks to the soak in water tip. After getting it all back together, tested beautifully. Before, it was BANG, full up, or BANG, full down. Now he has control and can raise and lower nice and easy and hold the level he wants. Guess that's because the draft control plunger is no longer as crooked as a dog's hind leg. And a new friction disk for the control lever means he won't have to mow with one hand holding it all the time. I wasn't to thrilled with the scratches on the hydro pump pistons, but he didn't want to open that can of worms at this time.
 
Back to top
View user's profile
R Geiger
Tractor Guru


Joined: 19 Apr 2009
Posts: 4562
Location: Banks, Oregon

Report to Moderator

PostPosted: Fri Feb 02, 2018 6:17 pm    Post subject: Re: 9N Lift cylinder question Reply to specific post Reply with quote

The 9n and 2n were not designed to have position control, full up or full down and and chase what ever you want halfway.
 
Back to top
View user's profile
Royse
Tractor Guru


Joined: 17 Jan 2011
Posts: 15858
Location: Ionia County Michigan

Report to Moderator

PostPosted: Fri Feb 02, 2018 6:29 pm    Post subject: Re: 9N Lift cylinder question Reply to specific post Reply with quote

"The 9n and 2n were not designed to have position control, full up or full down and and chase what ever you want halfway."

Correct. Limiting chains are used to set the height for a mower on a 9N.
Lower the mower and let the chains hold it at the desired height.
Or, buy add-on position control, like the Zane Thang from fellow forum member Zane Sherman.
10 minute bolt on job with no modifications to original equipment.
 
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