Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

1365 - removing stuck pilot valve on hydraulic lift

Goto page Previous  1, 2

 
Post new topic    
View previous topic :: View next topic  
Author Message
fperron_kt88
New User


Joined: 20 Nov 2017
Posts: 13
Location: Papineauville - Canada

Report to Moderator

PostPosted: Wed Nov 22, 2017 7:20 am    Post subject: Re: 1365 - removing stuck pilot valve on hydraulic lift Reply to specific post Reply with quote

Haaa!!! This is it!!! I did not remove the oil in there and missed the threads!!! Embarassed

Great! Any idea what size bolt it is? M12x1,25?

Is the pilot valve very tight in there in your unit?
 
Back to top
View user's profile
fperron_kt88
New User


Joined: 20 Nov 2017
Posts: 13
Location: Papineauville - Canada

Report to Moderator

PostPosted: Wed Nov 22, 2017 7:22 am    Post subject: Re: 1365 - removing stuck pilot valve on hydraulic lift Reply to specific post Reply with quote


And I will certainly want to check for pressure as soon as I have the thing cleaned-up and reassembled. Thanks for the anecdote!
 
Back to top
View user's profile
fperron_kt88
New User


Joined: 20 Nov 2017
Posts: 13
Location: Papineauville - Canada

Report to Moderator

PostPosted: Wed Nov 22, 2017 9:56 am    Post subject: Re: 1365 - removing stuck pilot valve on hydraulic lift Reply to specific post Reply with quote

Bingo!

I found a screw (more like an M6) and pulled the pilot out. Guess what: metal speck on the valve seat down below. Some contamination on the walls that made it sticky. You can see a fair amount of scoring and marring on the valve body... Not bad for a tractor about my age. The pilot will go back in there for another few decades... Did not take a photo of the seat, but it looks good. Will decide later if I want to lap-it a bit or not (any advice on this? I would do it like for a regular head valve with minimal amount of paste and rotation action)

Here is the pilot body:
[img]https://drive.google.com/a/csimple.org/file/d/0B57xpBUFyOUkcXlFeUJ4RVN0NC0tWHRIM1M3emV3NWlUTU5R/view?usp=sharing[/img]

It is now moving smoothly, just like everything else, with the simple action of a small magnet and after a simple clean-up/re-lube.

Here is the test with the magnet: much better now!
[img]https://drive.google.com/a/csimple.org/file/d/0B57xpBUFyOUkQmtZMVc5Z2Z4UHVpVHdWWkZiemgyb29nTTc4/view?usp=sharing[/img]

This is very good news, I believe Wink

Thanks to all for the help and support!

Time for decontamination and rebuild. Fingers crossed...
 
Back to top
View user's profile
fperron_kt88
New User


Joined: 20 Nov 2017
Posts: 13
Location: Papineauville - Canada

Report to Moderator

PostPosted: Mon Dec 11, 2017 7:58 am    Post subject: Re: 1365 - removing stuck pilot valve on hydraulic lift Reply to specific post Reply with quote

For completeness: all is well, the tractor is fixed! It was a metal speck preventing the pilot valve's proper sealing action and general contamination that was preventing proper movement of said pilot valve...

Had to ditch the gaskets that were sourced for the job: very poor fit. Made them with generic paper and tack-it red stuff...

Replaced two o-rings and the plastic backing coil on the piston while in there. The main o-ring on the cylinder needed a weird plastic band to stay on while reassembling: nothing special, but a tad expensive at 23$CAD...

Thanks *a lot* for the help!

Now, let there be snow!
 
Back to top
View user's profile
:   
Post new topic    Yesterday's Tractors Forum Index -> Oliver, Cletrac, Coop and Cockshutt All times are GMT - 8 Hours
Goto page Previous  1, 2
Page 2 of 2

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
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 ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

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