Farm Equipment - Allis C oil pump gasket

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Allis C oil pump gasket

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=209043
Printed Date: 23 Nov 2025 at 3:54pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis C oil pump gasket

Posted By: 3rd generation
Subject: Allis C oil pump gasket
Date Posted: 23 Nov 2025 at 2:26pm

The gasket thickness provided in rebuild kit is .007” book says .001-.003” end play. Book says to lap body to reduce clearance. With out a gasket I have .003”
Thoughts on using .002 thick paper and coat with copper coat after lapping .002” off.

Replies:

Posted By: steve(ill)
Date Posted: 23 Nov 2025 at 3:48pm

yes, you can use a piece of paper to make a gasket.. Dont use any sealer... little oil film will seal it.. The tighter the better.. If you can get a couple thousandths off the housing, that would help.

These engines dont have but 15 psi of pressure when running... Can be less at idle, especially if you have excess clearance.. Spending some time to get the pump right is a good long term investment.

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Like them all, but love the "B"s.