Yesterday's Tractor Co. Parts for Farm Tractors - Compare our Prices!
Click Here or call 800-853-2651 
   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 in to check your private messagesLog in to check your private messages   Log inLog in 

bearcat flail chopper


 
Post new topic    
View previous topic :: View next topic  
Author Message
Finnbair2020
Regular


Joined: 03 Apr 2010
Posts: 116


Report to Moderator

PostPosted: Wed Oct 10, 2012 1:42 pm    Post subject: bearcat flail chopper Reply to specific post Reply with quote

I have a bearcat 6 foot flail chopper. I seem to be going through a lot of shear bolts at the flywheel/clutch that is next to the gearbox. I'm not sure why-- sometimes it's running fine and when I turn off the PTO, it snaps a shearbolt-- sometimes one breaks when I start out. They are quite a pain to put in-- the two parts of the flywheel are very difficult to match up properly. I'm tempted to get a stronger bolt...
 
Back to top
View user's profile
Dick2
Tractor Guru


Joined: 11 Oct 2002
Posts: 9349


Report to Moderator

PostPosted: Wed Oct 10, 2012 2:53 pm    Post subject: Re: bearcat flail chopper Reply to specific post Reply with quote

If you are using a common Grade 2 bolt, you could try a Grade 5 bolt before you put in a Grade 8 bolt. It might help if you slow down the chopper as slow as you can before disengaging the clutch. It appears that the momentum of the chopper may be creating a backlash on the shear bolt.
 
Back to top
View user's profile
BushogPapa
Tractor Guru


Joined: 26 Dec 2001
Posts: 5870


Report to Moderator

PostPosted: Wed Oct 10, 2012 3:40 pm    Post subject: Re: bearcat flail chopper Reply to specific post Reply with quote


I believe I would be looking either at the Gearbox or under it for signs of anything striking under the mower..
It shouldn't be shearing the pins..

Does your tractor have a strong PTO Brake that might cause this..?

Ron..
 
Back to top
View user's profile
karl f
Tractor Expert


Joined: 05 Dec 2001
Posts: 1724
Location: MN

Report to Moderator

PostPosted: Wed Oct 10, 2012 7:12 pm    Post subject: Re: bearcat flail chopper Reply to specific post Reply with quote

if it"s a 72a like we had, I seem to recall it had an over-running clutch on the gearbox input, which should alleviate shut down driveline stresses. Also the gearbox has a bunch of shims under it to align it perfectly to the blower shaft--if the blower has been adjusted (if it is adjustable) you may need to re align the gear box. There is a double roller-chain coupler for some flex, but I seem to recall the gearbox had to be aligned fairly square to the blower shaft anyway. No matter what tractor, we idled them way low and then engaged the PTO and brought the machine up to speed. The one time we didn"t, the gearbox became shrapnel, even with the slip clutch and shearbolt for protection. Make sure there aren"t any bearings out and the shafts spin true. the shearbolt flanges may need to come apart and be cleaned and inspected to make sure they move freely to seat squarely together.

good luck
karl f
 
Back to top
View user's profile AIM Address Yahoo Messenger MSN Messenger
jon f mn
Tractor Guru


Joined: 25 Jan 2012
Posts: 4141
Location: Pine City Mn

Report to Moderator

PostPosted: Wed Oct 10, 2012 7:33 pm    Post subject: Re: bearcat flail chopper Reply to specific post Reply with quote

Also check the bolt holes for wear. My baler is a problem too, but I can see that the bolt holes vave a gouge in them from using too soft bolts. I will need to build it up again for next year.
 
Back to top
View user's profile AIM Address
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Implement Alley All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  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.

YT Home  |  Forums Home

Copyright © 1997-2014 Yesterday's Tractor Co.

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