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Allis Chalmers D14 Head Bolts
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ForeverHomestead View Drop Down
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Joined: 29 Sep 2016
Location: Ontario
Points: 22 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ForeverHomestead Quote  Post ReplyReply Direct Link To This Post Topic: Allis Chalmers D14 Head Bolts
    Posted: 15 Feb 2024 at 4:46pm
Hello All.  I am putting my D14 back together and thought maybe I could get away with reusing my head bolts (I know I am not supposed to)  as I am having a hard time sourcing new ones.  However when I was tightening them down, two of them stripped the threads.  So now I am on the hunt.

Can I use  grade 8 bolts?  if not, does anyone have a source for them they can send me a link to?
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PaulB View Drop Down
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Joined: 12 Sep 2009
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Points: 5102 		Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb 2024 at 6:47am
Grade 8 bolts will be fine if you find the correct length. IFIRR some are on the 1/4" increment, most places only stock the 1/2" increment sizes.
  You're lucky that the treads stripped off. Many years ago when reusing old bolts, I've had them break just as I was getting to the final torque. I never reuse head bolts any more.
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 21885 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb 2024 at 7:07am
Be sure to run a bottoming tap down each and EVERY head bolt hole and with compressed air clean them all out good. Wipe some grease on the threads of the head bolts for lube.
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ForeverHomestead View Drop Down
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Joined: 29 Sep 2016
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Points: 22 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ForeverHomestead Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb 2024 at 7:09am
thanks for the help guys.  I did clean the threads out with a tap.  I found a match on length and installed them yesterday .
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Mikez View Drop Down
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Joined: 16 Jan 2013
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Points: 8707 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mikez Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb 2024 at 8:10am
Looks like head bolts are still available 
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