Farm Equipment - Allis Chalmers D14 Head Bolts

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Allis Chalmers D14 Head Bolts

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=199849
Printed Date: 23 Sep 2024 at 11:17pm
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Topic: Allis Chalmers D14 Head Bolts

Posted By: ForeverHomestead
Subject: Allis Chalmers D14 Head Bolts
Date 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?

Replies:

Posted By: PaulB
Date 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.

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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

Posted By: DrAllis
Date 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.

Posted By: ForeverHomestead
Date 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 .

Posted By: Mikez
Date Posted: 17 Feb 2024 at 8:10am

Looks like head bolts are still available