Yesterday's Tractor Co. Tractor Parts for All Brands
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Tractor Manuals
Tractor Parts
Classified Ads
Photo Ads

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

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

Research & Info
Articles
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
Glossary

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

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Tractor Talk Discussion Forum

Air getting in hydraulic system

Author  [Modern View]
jhilyer

06-11-2014 09:59:58
74.81.103.162



Report to Moderator

I have a "modern" tractor, a JD 5303 2WD with front end loader, and I have a problem I can only describe as air in the hydraulic system.

Here's what's happening: At cold start up, everything is fine for say 5-10 minutes. Then I'll start noticing "hitches" in the steering, and also when lifting the front end loader. This will get progressively worse over the span of 2 hours (like when I'm cutting hay).

Let it sit for an hour or so, and it will be fine again.

The only thing I've done lately is top it off with Tractor Supply tranny/hydro fluid, yes I read the back and it said it was good for JD. But maybe this is the problem? I can't say if I had the problem before or after adding this fluid. You only really notice it after running a while.

I do not see anything spraying out like from a leak. I added the fluid only because we ran a leaky log splitter this winter (using tractor hydraulics), and lost some fluid that way.

Any ideas?

Thanks,

- jhilyer

[Reply]   [No Email]
Bob in Australia

06-11-2014 16:01:33
220.239.120.226



Report to Moderator
 Re: Air getting in hydraulic system in reply to jhilyer, 06-11-2014 09:59:58  
It may be simple like cleaning screen and changing filter.

Unfortunately it may not be simple. I had a JD3350 with same symptoms. Turned out to be a problem with the charge pump in the transmission. Tractor was worth $20,000 and quote from trusted mechanic was about $20,000 to $25,000 to fix the problem. I considered doing the job myself, but thought I might get in too deep. Traded the tractor at a big loss on a new JD

[Reply]  [No Email]
Tx Jim

06-11-2014 17:01:28
69.35.160.188



Report to Moderator
 Re: Air getting in hydraulic system in reply to Bob in Australia, 06-11-2014 16:01:33  
$20K-$25K to repair hyd's on a JD Mannheim tractor(model 3350) of that era sounds WAY TOO MUCH



[Reply]  [No Email]
Bob in Australia

06-11-2014 18:52:50
220.239.120.226



Report to Moderator
 Re: Air getting in hydraulic system in reply to Tx Jim, 06-11-2014 17:01:28  
Tim

I remember that you helped me on the way to diagnosing this problem.

Parts were going to cost about $12,000 (JD knows how to charge here) and some parts were difficult to get.

Labor was also very expensive then (middle of the mining boom and most good mechanics had headed off to cash in at the mines). Labor costs have eased off now but are still close to $100 per hour. The big labor cost was getting the cab off and getting at transmission.

Traded the 3350 on a new 6330. It is the utility tractor on 4,500 acre grain farms. Main farm work is done by 8000 series (not mine) JDs in no till system.

[Reply]  [No Email]
Tx Jim

06-12-2014 03:25:16
69.35.163.56



Report to Moderator
 Re: Air getting in hydraulic system in reply to Bob in Australia, 06-11-2014 18:52:50  
Man that's a lot of parts & labor.



[Reply]  [No Email]
farmer boy

06-11-2014 15:56:56
142.46.143.228



Report to Moderator
 Re: Air getting in hydraulic system in reply to jhilyer, 06-11-2014 09:59:58  
How much TSC oil did you add, and what is the capacity of the system?

Cheap oil is not worth it. Go get a good oil from AGCO, MF, JD, Kubota Case IH or New Holland. Doesn"t matter who, whatever"s cheapest. (provided were talking about straight, regular Trans-Hydraulic Fluid). The TSC stuff is maybe $3/gallon cheaper. That"s $12 vs $15-$16/gal. Your 5303 likely holds about 10 gallons. $120 vs $150-160. I can buy AGCO 821XL for 69.95/5 gal HERE, in Canada. That"s 13.99/gal. Certainly shouldn"t be anymore there.

[Reply]  [No Email]
Tech 7

06-11-2014 11:06:50
67.220.32.95



Report to Moderator
 Re: Air getting in hydraulic system in reply to jhilyer, 06-11-2014 09:59:58  
Good suggestions here, but I would also have a look at the rubber hoses used to connect the steel pump inlet line on the RH side of the tractor. There is one hose at the back by the filter and the other is at the pump itself. Yes it is possible for air to be drawn in and not let oil run out.



[Reply]  [No Email]
gchase24

06-11-2014 10:15:26
65.70.249.140



Report to Moderator
 Re: Air getting in hydraulic system in reply to jhilyer, 06-11-2014 09:59:58  
Pull and clean the pump suction screen,very simple. change the hydraulic filter. My (2008) JD 4320 did the same and this cured the problem.



[Reply]  [No Email]
David G

06-11-2014 10:13:20
204.29.138.33



Report to Moderator
 Re: Air getting in hydraulic system in reply to jhilyer, 06-11-2014 09:59:58  
You could also be having cavitation in the pump do to the oil thinning when hot. It acts a lot like air in the system.

You should do some pressure tests.



[Reply]  [No Email]
Dalex

06-11-2014 10:12:59
71.108.56.18



Report to Moderator
 Re: Air getting in hydraulic system in reply to jhilyer, 06-11-2014 09:59:58  
Check your suction filter or screen . It may be plugged and the pump is sucking air from a hose fitting.....



[Reply]  [No Email]
JohnDeere720GA

06-11-2014 10:12:55
75.131.18.27



Report to Moderator
 Re: Air getting in hydraulic system in reply to jhilyer, 06-11-2014 09:59:58  
Maybe the new fluid is causing some foaming and it is building as it runs the pump but once you shut it off the foam breaks?



[Reply]  [No Email]
KEH

06-11-2014 14:27:31
67.231.175.190



Report to Moderator
 Re: Air getting in hydraulic system in reply to JohnDeere720GA, 06-11-2014 10:12:55  

My experience with mixing TSC fluid with another brad was not good, it foamed. Others who have used it by itself had no problems. Since then I have tried not to mix brands of hydraulic oil.

KEH



[Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Add a Reply]

Hop to:
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  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. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 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