Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

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

John Deere Tractors Discussion Forum
:

2640 PTO problem

Welcome Guest, Log in or Register
Author 
Old Hickory

07-02-2006 18:48:21




Report to Moderator

While cutting hay, the PTO suddenly stopped. After disconnecting the Haybine coupling from the PTO shaft, the PTO turned and increased speed up to full 540 rpm (guess) as engine was accelerated. Recoupled to haybine, but PTO still doesnt turn. Have good pressure on a pressure gage when connected to a hydraulic coupler and have ~100 lbs pressure when connected into the housing containing the PTO engaging knob and gear shift levers. Any thoughts as to what I should do next?

[Log in to Reply]   [No Email]
Old Hickory

07-26-2006 11:36:45




Report to Moderator
 Re: 2640 PTO problem in reply to Old Hickory, 07-02-2006 18:48:21  
I repaired the tractor. It was a broken hydraulic line. Had to break the tractor in half. Lot of work for a broken line.



[Log in to Reply]  [No Email]
Dave Sherburne NY

07-05-2006 10:27:48




Report to Moderator
 Re: 2640 PTO problem in reply to Old Hickory, 07-02-2006 18:48:21  
Here is what the JD tech manual says for
PTO fails to operate.
Transmission oil pump defective: Clutch facings worn or burned:
Control valve defective:
PTO selector levers disconnected: Engine clutch pressure plate defective: I don't claim to be an expert on this, matter of fact I sent my tractor to somebody else to have my Hydraulics repaired "coward".
The Parts manual shows a "collar shifter" that
the lever by your left foot slides inside the transmission maybe splines stripped, I don't
know. Anything else, I can help with, ask.

[Log in to Reply]  [No Email]
Old Hickory

07-05-2006 13:12:10




Report to Moderator
 Re: 2640 PTO problem in reply to Dave Sherburne NY, 07-05-2006 10:27:48  
after pulling off the PTO clutch valve housing. I determined that the valve is ok. No broken springs or stuck parts. I did note that one of the steel hydraulic tubes was easy to wiggle though. So, now it looks like tractor splitting time. I"m hoping its a cracked tube or o-ring as Tx Jim mentioned. The parts diagram shows that there is a hold down clamp and that could have loosened and allowed the tube to disconnect. Anyway, should find out when I get inside. Thanks for the help. I"ll check those things you mentioned while inside.

[Log in to Reply]  [No Email]
Dave Sherburne NY

07-05-2006 13:52:37




Report to Moderator
 Re: 2640 PTO problem in reply to Old Hickory, 07-05-2006 13:12:10  
Just a word of caution, when I had my 2640 split
by a better mechanic than me, He found that he was
not the first. whoever split it before him failed to get the hydraulic tubes that go to the front lined up PERFECTLY, and the tubes never entered the
the sockets, and were mashed so very little oil went to the front.



[Log in to Reply]  [No Email]
Dave Sherburne NY

07-03-2006 19:24:52




Report to Moderator
 Re: 2640 PTO problem in reply to Old Hickory, 07-02-2006 18:48:21  
Doesn't that tractor have a lever down by your left foot to put the PTO in and out of gear in
addition to the one between the shift levers?
I sold my 2640 a couple of years ago and my memory
of it went with it. Tho it was a very good tractor.



[Log in to Reply]  [No Email]
Old Hickory

07-04-2006 08:50:50




Report to Moderator
 Re: 2640 PTO problem in reply to Dave Sherburne NY, 07-03-2006 19:24:52  
You are right. You shift the lever beside your left foot to put the PTO in gear and then you lift the knob between the hi-lo-reverse-park and gear shift levers to engage the PTO. With the PTO lever in gear and the knob engaged, the PTO is not turning under load. It turns fine when there is no load. There is no noise that would indicate broken parts, etc. I can hear the faint click that occurs when you lift the knob to engage the PTO. So I think it may be a hydraulic problem associated with the PTO clutch, but not sure.

[Log in to Reply]  [No Email]
G/MAN

07-03-2006 07:29:47




Report to Moderator
 Re: 2640 PTO problem in reply to Old Hickory, 07-02-2006 18:48:21  
I recently worked on a 2840 with a non-working PTO. There's a coupler sleeve that connects the shaft coming out of the PTO clutch to the actual shaft going to the rear of the tractor. The tractor had been split sometime previously and the coupler had fallen off the shaft. It's possible that the coupler has broken, or there is some sort of other internal mechanical failure. Not sure of the PTO pressure spec, but 100 psi should be sufficient to turn the shaft at least.

[Log in to Reply]  [No Email]
Tx Jim

07-03-2006 03:28:07




Report to Moderator
 Re: 2640 PTO problem in reply to Old Hickory, 07-02-2006 18:48:21  
I'm thinking pressure should be 175 psi. Might have a cracked line or bad o-ring on line from valve to clutch. Tx Jim



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

Hop to:


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