Yesterday's Tractor Co. Fast, Friendly Parts Service
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Tractor Manuals
Tractor Parts
Classified Ads
Photo Ads

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Tractor Talk Discussion Forum

Re: shear pins

[Show Entire Topic]  

Author  [Modern View]
Billy NY

07-07-2014 16:59:45
66.67.105.23



Report to Moderator

You many want to consider that, this is one of the more abusive pto driven implements you can attach to a tractor. Depending on the conditions, what you will be cutting, and or the hidden, unforseen rocks, objects or the worst case scenario, any stumps and all the rest, that it either slips properly via a slip clutch or it shears when it needs to. I saw a very expensive repair with a JD 2020 last year, which I now suspect was an unknown, possibly grade 5 or 8 in the driveline of this old but really heavy duty rotary mower, it destroyed the shaft coupler, and it was a split and complete tear down, for a very inexpensive bolt, pin or slip clutch.

My old Rhino has a shear pin hole in the drive line and I use shoulder bolts with left hand thread that shear, which have nylon line nuts, these will shear before a grade 2 bolt will in the drive line, it will lay both blades down under the deck, with the remains of the hardware, last time it was a hard round rock, that surfaced the last time the field was in crops. The blades are connected to a blade holder that has as stump pan, no doubt those pans can help reduce some impact. I ran a tail wheel through this mower, and though I did slow it down quickly, the grade 2 nor the blade bolts sheared, it did a lot of damage to the deck, another 50 cent pin, that failed, cost a lot more in repairs, should have been replaced, it got past me, new tail wheel, and a bunch of labor to straighten the sidewall of the mower and a bunch of miscellaneous welding to the deck, caught some welds on the blade holder that would have failed, wish that grade 2 or blade bolts sheared that time! Not to mention if it was paying job the down time over a darned 50 cent pin.

I've taken saplings and heavier brush/bushes, starting up high and lowering into them in the succeeding passes, in 12 years with this mower, I have sheared that grade 2 bolt one time as I recall, it does fit nicely too, no slop. I think the best advice is to play it safe, they can do some damage in short order per the above. If you are dealing with a lot of conditions where it will impact and shock load the drive line, don't have a stump pan, I'd seriously consider a slip clutch, make sure it works correctly or get a pile of grade 2's to keep on hand, at over 3K in repairs like the above, and or depending on what you have for a tractor, something to consider, that buys a lot of bolts/pins and or slip clutches.

Another thing, depending on what you are running for a mower, with so many different kinds out there, the book for it may provide the specifications of what should be used anyway, one page in the book for mine certainly helped me avoid a lot of problems, as well as making it perform as designed etc.

[Reply]   [No Email]
Nick167

07-07-2014 17:44:08
72.105.15.213



Report to Moderator
 Re: shear pins in reply to Billy NY, 07-07-2014 16:59:45  
I read about the slip clutch and heard if you don't use them much they can sieze up we only use a couple times a year and the one place is in a woods with a bunch of trash in it by no rocks



[Reply]  [No Email]
[Show Entire Topic]     [Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Add a Reply]

Hop 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. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 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