This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
The Forum Parts and Services Unofficial Allis Store Tractor Shows Serial Numbers History
Forum Home Forum Home > Allis Chalmers > Farm Equipment
  New Posts New Posts
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


1/3 bolts sheared on PTO shaft
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
ssefick View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 09 Feb 2022
Location: South Carolina
Points: 137 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ssefick Quote  Post ReplyReply Direct Link To This Post Topic: 1/3 bolts sheared on PTO shaft
    Posted: 30 Apr 2022 at 5:24pm
Hi All:

First, is it customary to report back on posts, and how the tractor functions as a result of this fantastic forum?

The 1 of the 3 bolts that holds the pto stub shaft is broken off (looks like it was twisted off by previous owner).

How hard is this to fix? Do I have to take the housing apart? I have the manual, and it looks like that is the case. Is there something easier?
Back to Top
Sponsored Links


Back to Top
DanWi View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 18 Sep 2009
Location: wttn
Points: 1922 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DanWi Quote  Post ReplyReply Direct Link To This Post Posted: 30 Apr 2022 at 5:44pm
What tractor?
Back to Top
DiyDave View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 54060 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 30 Apr 2022 at 7:00pm
I'm guessing a 6080, from his other posts.  What size bolt?  You can drill out and use a quality spline type EZ out, or weld a nut to the stub, pictures would help, to see what the situation is.Wink
Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!
Back to Top
IBWD MIke View Drop Down
Orange Level
Orange Level
Avatar

Joined: 08 Apr 2012
Location: Newton Ia.
Points: 4069 		Post Options Post Options   Thanks (0) Thanks(0)   Quote IBWD MIke Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2022 at 7:34am
sseflick, I don't know that  it is customary to report back on posts but it is nice. I try to update the status of things when asking for help.
Back to Top
ssefick View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 09 Feb 2022
Location: South Carolina
Points: 137 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ssefick Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2022 at 7:50am
My apologies. I have COVID. It is a 6080.

They are large probably a 3/4.

I looked in the parts book, and it looks like I have to take the pto cove off to fix this.
Back to Top
DiyDave View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 54060 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2022 at 3:28pm
As in 3/4" bolt, or 3/4" wrench?

You may want to leave the housing in place to serve as a guide to drill a hole in the bolt.  Before doing that, Heat it with a torch, as hot as you can get it, and let it cool.  These are the type of bolt extractor that seems to work best for me:


I have rarely had a bolt bigger than 1/2" shear off unless there's a jerk on the wrench...Wink
Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!
Back to Top
Jim.ME View Drop Down
Orange Level
Orange Level


Joined: 19 Nov 2016
Location: Maine
Points: 962 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2022 at 4:20pm
If you are talking about the three bolts that hold the short PTO output stub shaft, which can be changed for 540 or 1000 RPM use, those are shown as special bolts.  If those are the ones, you are talking about, the nut would be what twisted the thread off.  If you look in the parts book it would appear the head is inside and not accessible without disassembly.  It appears they have special heads so they don't turn, and the shanks may be an interference fit so they stay in place when the nut is removed to take the stub off.  And they are metric.  IF I am looking at the right ones, I would not say you need easy outs or heat.  I would say they press or drive out and the new ones are installed the same way.  My apologies if I am looking at the wrong bolts.

The PTO stub shaft arrangement should be on page 214 of this parts book and the bolts are item 17 and the nuts are 18.
Back to Top
ssefick View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 09 Feb 2022
Location: South Carolina
Points: 137 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ssefick Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2022 at 6:04pm
Jim you are exactly correct. That is what I thought I just wanted to confirm.

I believe the whole pto cover has to come off to replace those studs. Is that your understanding?

I am thinking about welding a bolt onto the end and using that for now. Is that a crazy idea?

I'll take a picture tomorrow, and post here.

This is a new to me tractor, and I have been working on it for about 2 months now, and want to get it going.

Thanks everybody!
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.047 seconds.


Help Support the
Unofficial Allis Forum