Farm Equipment - D17 Series II PTO Guard Nuts

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D17 Series II PTO Guard Nuts

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=55458
Printed Date: 10 Sep 2025 at 6:50am
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Topic: D17 Series II PTO Guard Nuts

Posted By: Charlie175
Subject: D17 Series II PTO Guard Nuts
Date Posted: 18 Aug 2012 at 12:53pm

What is the size and pitch of these nuts?
I know they aren't course thread.

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD

Replies:

Posted By: JoeO(CMO)
Date Posted: 18 Aug 2012 at 2:07pm

The parts book calls for 3/8 NC for the d17 and d15. That was a weak point when a 3point top link was added and could have been repaired

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Posted By: DrAllis
Date Posted: 18 Aug 2012 at 4:47pm

Seems like they were 3/8" NC studs into the lift arm housing and 3/8" NF nuts. Why the stud was NC on one end and NF on the other, I don't know.

Posted By: Charlie175
Date Posted: 18 Aug 2012 at 5:51pm

Thanks

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD