TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Harry Ferguson Tractors Discussion Forum

MF-35 hydraulic jerking

Welcome Guest, Log in or Register

Author

Bart.Ca

08-27-2006 09:30:18

Report to Moderator

The hydraulic lift is jerky when lifting implements
I checked the pressure 2000 PSI with also tester
needle is jerking too fromm 2000 to 1000 PSI. When I stop the engine it drops to the ground in 5 seconds.

It suddenly appens no previous problems with hyd.

Thanks for reading.

Bart

[Log in to Reply] [No Email]

Bill Brox

08-29-2006 17:21:50

Report to Moderator

Re: MF-35 hydraulic jerking in reply to Bart.Ca, 08-27-2006 09:30:18

Not going to add much here... just that there is seal kits available for the MF 35 pump, and if you for some reason should need to have a total pump overhaul, a good advice here is to order a Mark II kit instead of the Mark I kit. A Mark II kit will give a little more flow as the piston diameter is a little larger. And the Mark II kit will fit a Mark I pump according to my local MF dealer. A Mark III kit can never be used on a Mark I / II pump.

Bill

[Log in to Reply] [No Email]

John (UK)

08-27-2006 12:14:19

Report to Moderator

Re: MF-35 hydraulic jerking in reply to Bart.Ca, 08-27-2006 09:30:18

From your description it does sound like you have blown some "O" rings on the Pump side chambers, there is no check valve in this system unlike the TE20 & TO20 & 30 so it will drop. The Pump in this tractor is a four cylinder type and if it stops working on any of the cylinders due to a leak (blown "O" rings) then it will jerk. Think of it like a auto engine not running on all cylinders, it will misfire. The Pump will need to come out from how you describe it, but to make sure you can look in through one of the round ports when you have an implement on the 3 point linkage and the lever in the raised position, just try to see where the oil leak is as it will be escaping under pressure. Are you using the hydraulics correctly with the round "Position" control lever for lifting and lowering and the square "DRAFT" lever for the depth control. If you leave the DRAFT control at the top it will be blowing the relief valve and could blow the "O" rings. If you need the working instructions for this hydraulic system email me at:-
fergusontractors(at)tiscali.co.uk
if you need the information on how to remove the Hydraulic Pump and top cover, again email me. while the top cover is off the tractor it may be a good idea to reset the internal linkage as it will be worn now, I have that information too...John

[Log in to Reply] [No Email]

Bart CA

08-27-2006 13:13:49

Report to Moderator

Re: MF-35 hydraulic jerking in reply to John (UK), 08-27-2006 12:14:19

Thanks John for these informations and your offer
for documentation.

I have a service/parts manual on order if I need
further informations I will let you know.

Many thanks for your help.... greatly appreciated.

Bart

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

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