Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
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

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Implement Alley Discussion Forum

single acting cylinder help

Welcome Guest, Log in or Register
Author  [Modern View]

10-12-2013 20:38:48

Report to Moderator

I"m probably just stupid asking this as I couldn"t figure out right away this afternoon but we just bought a new Bush hog for our farmall 400 and it has a single acting hydraulic cylinder on it. The cylinder had a number of spacers on it. We hooked it up and can tell the hose is moving from the oil pressure but the cylinder had no movement. I removed one of the spacers and the cylinder shut further but no movement again heading to the "up" position. I cracked the line heading to the cylinder and could easily tell the line was getting pressure just no response from the cylinder. Is there some kind of bleeding procedure on a new cylinder I"m missing? I feel dumb posting this because I know I"m just missing something simple here. Thanks for any help!

[Log in to Reply]   [No Email]

10-14-2013 09:22:52

Report to Moderator
 Re: single acting cylinder help in reply to chrisfarmallf20, 10-12-2013 20:38:48  
Sounds like you need to Tee into the hose with a pressure gauge. Tom

[Log in to Reply]  [No Email]
karl f

10-13-2013 16:05:36

Report to Moderator
 Re: single acting cylinder help in reply to chrisfarmallf20, 10-12-2013 20:38:48  
check if using the rear manifold if it has a check valve block on it as well. If your tractor ever had a fast hitch then it should have had a check valve which maybe didn't stay with the hitch. Not all check valves work with single acting cylinders.
You could probably put those same style check valves on the under tank ports too, so investigate what hardware you have. karl f

[Log in to Reply]  [No Email]

10-13-2013 08:24:10

Report to Moderator
 Re: single acting cylinder help in reply to chrisfarmallf20, 10-12-2013 20:38:48  
I'll check the valve on the tractor. Thanks. I did try both outlets on the back of the tractor and I believe the one one the left is the proper one to use. also it is a new cylinder and it is a vented plug on the far end. I'm just wondering if it would be air bound. I'll remove the spacers to allow the cylinder to completely close and hopefully that will also purge out any air.

[Log in to Reply]  [No Email]

10-13-2013 16:18:46

Report to Moderator
 Re: single acting cylinder help in reply to chrisfarmallf20, 10-13-2013 08:24:10  
It is not air locked, and when assembling they just put that vent plug where it was the easiest to put it. All cylinders need a load on for them to retract if they are set up with one hose, only the ones with 2 hoses can you test laying on the ground.

[Log in to Reply]  [No Email]

10-14-2013 08:42:21

Report to Moderator
 Re: single acting cylinder help in reply to Leroy, 10-13-2013 16:18:46  
Not true. I removed the spacers on the cylinder and was able to push the ram back to the "down" position. It was hard the first couple of times but then it went easier...making me believe there may have been some trapped air in there. I checked the tops of the hydra-touch valves and they were set for switched that to single-acting and hooked back up....tractor pushes the cylinder but not when the cylinder is hooked up to the bush hog...not enough power to lift it! Hmmmm....I thought....I checked the hydraulic reservoir and it is sitting right at the low mark. Of course I"m out of hydraulic oil so now off to tractor supply to buy a pail and fill it up, hoping this is the problem...because if not I"m guessing my pump is shot...ugh.

[Log in to Reply]  [No Email]

10-13-2013 06:06:08

Report to Moderator
 Re: single acting cylinder help in reply to chrisfarmallf20, 10-12-2013 20:38:48  
Sounds like the cylinder is set on pull for raising an implement and some ore made for a pull instead of push to raise it. Or could be someone took the second hose off to use someplace else when they broke one and that is the most likely thing. Look for a place to put a second hose on, may have a pipe plug in, take out that plugand either move the hose over or add a second hose and it should work, If as a single action with only one hose you need the weight of the implement to retract the cylinder and retract would be eiither together as with a normal setup extend to raise or a odball setup that it pulls to raise then the implement weight would extend the cylinder to lower.

[Log in to Reply]  [No Email]
Absent Minded Farmer

10-12-2013 21:33:50

Report to Moderator
 Re: single acting cylinder help in reply to chrisfarmallf20, 10-12-2013 20:38:48  
The 400 has an adjustment on top of the control valves behind the dash. The selector changes the function of the valve between single & dual acting. On a well used tractor, they're usually hiding under dirt & oil on top of the valve block(s). After you clean the valves, you'll see the selector I'm speaking of. You can use a 1/2" wrench to turn the selector, it moves in an arc from about 10 to 2 o'clock, when looking over the top of the valves toward the seat. There should also be a "S" & "D" in the casting the selector pokes out of. Also, wiggle the handle you've been using to figure out which valve to adjust, if you have more than one valve. Right, center & left levers are not connected to the valves in the same order, nor are the hydraulic lines from them. Anyway, once the valve is changed to single acting, the hydraulic fluid should flow back out of the cylinder to let the Bush Hog down. If your hooking into the hydraulic block on the side of the battery box, I think the hose goes in the bottom connector.

Hope this helps.


[Log in to Reply]  [No Email]

10-12-2013 21:11:23

Report to Moderator
 Re: single acting cylinder help in reply to chrisfarmallf20, 10-12-2013 20:38:48  
Switch the hose to the other outlet.I'l bet you have it set to the 'oneway' setting.You are hooked to the 'down' hose.Or the plug is still in the other end of the cylinder.Its airlocked or hydrolocked.Remove thet plug ndd install a vented plug.

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

Hop to:

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 ]

Home  |  Forums

Copyright © 1997-2016 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