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

Farmall & IHC Tractors Discussion Forum
:

Here I go again-MCV

Welcome Guest, Log in or Register
Author 
SGT K

01-13-2006 07:32:10




Report to Moderator

I have had trouble with the steering not working on the 1466 after start-up. I asked about this last year and got some good advice, even though I'm ashamed to say some of it was a little over my head. I went through my valve body and put some seals and O-rings in the power steering pump and it got me by another year.
The other day I started it and it would not take prime, no matter how much I messed with it. I thought the flow control valve was stuck, so I took it out and cleaned it up-no help. I took the safety valve assembly out of the bottom, thinking I could bleed off any air-no help. I took them both out and turned the tractor over with the starter-no oil. I started the tractor and it would just sputter a little oil out of the flow control valve every now and then.

Shouldn't oil pump out of the flow control valve? I'm ready to put in a rebuilt power steering pump. Can you think of anything my simple mind might be missing???
Thanks,
Paul

[Log in to Reply]   [No Email]
the tractor vet

01-13-2006 08:58:49




Report to Moderator
 Re: Here I go again-MCV in reply to SGT K, 01-13-2006 07:32:10  
well here we go again , now i am assuming that the Hdy. filter is clean and your hdy fluid is up to the full mark and it is clean with no water in it and i am assuming that the tractor has not been split in a long time . So also that all the MCV springs are with in spec. so maybe the pump is getting weak but with out putting the gauges to it and running a flow check one can not be sure but it is only money and they are not hard to change just remember to check the thickness of the old gskt and replace with the same . Then after the new pump is on then also check the pressure also prime the new pump to wet the gears . check you sump check plug and give the spring a littel tweek if it is bad then replace the plug and the spring . Myself i would rebuild or have the MCV rebuilt and checked by someone that knowes what he is looking at and knowes how to do this i saw one that a guy thought he knew what he was doing and just new that if he shimmed the pressure releif valve up just a bit it would be a whole lot better after he started the tractor it sent the MCV to the other side of the shop blew it clean off the tractor and pulled the threads out of the range trans casting.

[Log in to Reply]  [No Email]
SGT K

01-13-2006 09:33:01




Report to Moderator
 Re: Here I go again-MCV in reply to the tractor vet, 01-13-2006 08:58:49  
TV,
I knew I could count on a reply from you!

Filter and oil level are good. Springs in spec??, not sure (I'm one of those guys that really does not know what he is doing, but can't keep himself from trying)

The advice on wetting the gears is excellent, I hadn't thought of that. I will get out the book and see if I can measure or test the springs. I can't picture the sump check plug spring. Maybe I will remeber when I see it, can you give me a little description?

I've never blown anything off of a tractor ;) but I ain't finished either.

Thanks, I'll let you know.
Paul

[Log in to Reply]  [No Email]
the tractor vet

01-13-2006 11:23:57




Report to Moderator
 Re: Here I go again-MCV in reply to SGT K, 01-13-2006 09:33:01  
Well Ok here we go get your self a set of dial calipers and and IT manual as the spring FREE lengths are listed and the sump check plug is located BEHIND the MCV on the lower right hand side of the MCV in the range trans housing . Now if you have a good vice remove the lines and linkage on the MCV and drain the range transmission from the drain plug in it this will lower the Hdy fluid level but not the whole system remove the MCV from the tractor and place it in a vice and one at a time remove the valve and clean them one at a time and inspect them for any scoren or burs and with some carb cleaner sorta wash out that bore and with a littel compressed air blow out the bore then wet the valve with some clean Hy tran and see how it moves in that bore it should slide freely then check that spring for correct lenght you do not have a spring tester so as long as the spring is real close to the the correct lenght it will work . Now becareful when removing them as they will FLY OUT ( I just hate chasen springs across the shop. ) now you can also replace the pump also when you get to the steering orface make sure that nothing is blocking the hole .. Also mark what hole each bolt came out of and replace in the same hole and do not over tighten them . Let me know what you find . Good luck if ya get in over your head just yell .

[Log in to Reply]  [No Email]
SGT K

01-13-2006 12:38:58




Report to Moderator
 Re: Here I go again-MCV in reply to the tractor vet, 01-13-2006 11:23:57  
OK, that's a lot of help. I'll tear it down tonight or tomorrow. I'll get back to you, unless of course I blow something off of the tractor, then I'll probably hide out for a couple of days and hope everybody forgets about it ;)
Thanks a lot,
Paul



[Log in to Reply]  [No Email]
Allan in NE

01-13-2006 07:44:20




Report to Moderator
 Re: Here I go again-MCV in reply to SGT K, 01-13-2006 07:32:10  
Hey Paul,

You sure don't have a simple mind, but ya probably do have a weak pump. :>)

I don't know why it is, but people always want to think that "there is a stuck valve" or a "broken spring" when working with hydraulics.

It is almost "never" the case. Put a pump in 'er and quit the fight.

Just my guess,

Allan



[Log in to Reply]  [No Email]
Allan in NE

01-13-2006 07:53:24




Report to Moderator
 Re: Here I go again-MCV in reply to Allan in NE, 01-13-2006 07:44:20  
Besides,

They use a steel gear in an aluminum case and historically, this is the wearing failure point.

She's 30 years old. I'd sure first go with the law of averages instead agonizing thru that darned “could it be” routine. :>)

Hope ya get 'er fixed,

Allan



[Log in to Reply]  [No Email]
SGT K

01-13-2006 09:34:28




Report to Moderator
 Re: Here I go again-MCV in reply to Allan in NE, 01-13-2006 07:53:24  
Allan,
The pump is ordered. Now I have to drain all of that darn oil again!!

I'll let you know what I find out.
Thanks,
Paul



[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