Farm Equipment - Hand crank pin

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Hand crank pin

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=207737
Printed Date: 14 Aug 2025 at 9:33am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Hand crank pin

Posted By: Phil Stier
Subject: Hand crank pin
Date Posted: 09 Aug 2025 at 4:25pm

I’m looking for the pin in the hand crank shaft that engages the engine front pulley on a WD
What is the size and nomenclature for the pin. Is it tapered ?

Replies:

Posted By: DrAllis
Date Posted: 09 Aug 2025 at 8:50pm

Certainly not tapered. I think a common 5/16" roll pin about 2 to 2 1/2" long is what it takes. It could be 3/8" diameter but anyway, it is a very common size. Too short and it doesn't engage the jaws well. Too long and it won't go into the jaws.

Posted By: SteveM C/IL
Date Posted: 09 Aug 2025 at 11:33pm

It is a common roll pin....hardware store or farm store

Posted By: wjohn
Date Posted: 10 Aug 2025 at 1:03am

I think the one in my WD was just solid round stock, but no clue if it was original or not. It was sure stuck in there.

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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45

Posted By: DrAllis
Date Posted: 10 Aug 2025 at 6:17am

The original was a solid pin and many have been changed to a roll pin just because of the difficult removal.

Posted By: Dakota Dave
Date Posted: 10 Aug 2025 at 9:04am

Originally it was a round stock probably put in cold when the crank was hot it didnt come out. I replaced mine with 5/16" round stock 2 1/4" long and tack welded in place

Posted By: Allis dave
Date Posted: 11 Aug 2025 at 10:39am

My WD45 had a solid dowel pin. 3/8x2.5"
I have a whole box of them here. I couldn't find just one pin and had to buy a box when I put mine back together

Posted By: Lawffeg
Date Posted: 11 Aug 2025 at 11:32am

It is a common roll pin