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

Discussion Forum
:

SuperM cam gear and shaft

Welcome Guest, Log in or Register
Author 
Bart

11-24-2002 03:08:37




Report to Moderator

Has anyone ever welded the cam gear to the cam gear shaft and had it work? Replaced cam gear and the woodruff key slot is all worn out because the gear was loose. It's either rekey the shaft or replace the shaft, either a major job with my limited resources. Not to mention taking the whole wide front end off to do the work. Any creative help out there? Thanks for any advice. (I know it should be done right to begin with but am trying to slide by with this one.)

[Log in to Reply]   [No Email]
Bob M

11-24-2002 05:07:01




Report to Moderator
 Re: SuperM cam gear and shaft in reply to Bart, 11-24-2002 03:08:37  
Hey Bart - We encountered the same thing (badly worn camshaft keyway) on a buddy's 400 a few weeks ago. Solution was to tack weld the new key into the damaged keyway, then install the new gear on this "repaired" camshaft.

On my Super M (which I had to relace the cam gear several years ago) I found one side of the camshaft keyway missing entirely - apparently it had chipped out when the gear came loose. Not wanting (or being able to afford...) to replace the camshaft, I installed the new gear and key so one side of the key was against the remaining good side of the keyway. Figured the key only keeps the cam gear located until the cam nut is tightened. Once that nut is tight, the camshaft torque load is taken by friction between the back of the cam hub and the gear's rear hub face - the key is just along for the ride. So the damaged keyway would not be a problem.

I must have been right because the SM has since accumulated a couple hundred hours of operation and is still running great. Some of those hours were with heavy hydraulic operation - operation that causes the most stress on the cam gear and hub.

Good luck with yours!!

[Log in to Reply]  [No Email]
Heath

11-24-2002 18:00:00




Report to Moderator
 Re: Re: SuperM cam gear and shaft in reply to Bob M, 11-24-2002 05:07:01  
I don't know how hard the gear hub and cam are but if you can, drill one or more 1/4" holes endwise in between the hub and the shaft parrallel to the old key about 1" deep. Tap them out 5/16" and install a bolt or set screw which will lock it up better than a key. I have used this on stripped splines and it handled over 150hp and also in the stripped thread on gears in an M belly pump as well as many other pulleys etc. It is better that a key.

[Log in to Reply]  [No Email]
Bob M

11-24-2002 19:21:57




Report to Moderator
 Re: Re: Re: SuperM cam gear and shaft in reply to Heath, 11-24-2002 18:00:00  
Good idea Heath! Trouble is the cam gear is cast iron (relatively soft) but the camshaft is forged and heat treated steel (harder than a banker's heart). I expect drilling/tapping the camshaft half of the hole would be kinda tough.



[Log in to Reply]  [No Email]
Heath

11-25-2002 18:51:15




Report to Moderator
 Re: Re: Re: Re: SuperM cam gear and shaft in reply to Bob M, 11-24-2002 19:21:57  
I was afraid of that Bob. You can use a carbide cement drill and then pound in a roll pin. I don't think it will work for the cam and the only reason I am suggesting this is someone may be able to use it sometime. I got the idea of drilling and tapping out of an old Popular Mechanics and I have salvaged thousands of dollars of hubs with it and also made new drives when keyways weren't practical. Tapping it is best but roll pins will work if there is something to hold the pin in. I doubt if it will work on the camshaft but maybe you aren't out anything.

[Log in to Reply]  [No Email]
Bart

11-24-2002 11:56:39




Report to Moderator
 Re: Re: SuperM cam gear and shaft in reply to Bob M, 11-24-2002 05:07:01  
Bob M. You're absolutely right. I hadn't thought of welding the woofruff key back in it's slot. My tractor probably won't get a lot of use anyway. The way it got broken is someone installed a closed center hyd. valve. Cracked the pump and everything else it seems. Many thanks to you for taking the time to respond. Any snow over in New York? Almost time to hibernate here in Vermont. Thanks again.

[Log in to Reply]  [No Email]
Bob M

11-24-2002 16:23:02




Report to Moderator
 Re: Re: Re: SuperM cam gear and shaft in reply to Bart, 11-24-2002 11:56:39  
Bart - Both of the cam gear failures above appear to have been caused by the camshaft nut coming loose. But a closed center valve installed in the system will cause all sorts of problems also as you have discovered!!

We'll be hibernating here soon too. We've had several lake effect snows here the past couple of weeks - but so far it's melted within a day or so. The local ski areas are making snow however - a couple of them will open later this week if it stays cold. Think snow!! ...Bob M

[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