Farm Equipment - D 12 front oil seal

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D 12 front oil seal

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=212630
Printed Date: 27 Oct 2026 at 10:40pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D 12 front oil seal

Posted By: 54f250
Subject: D 12 front oil seal
Date Posted: 27 Oct 2026 at 8:34pm

i AM REPLACING A LEAKY FRONT OIL SEAL ON MY d 12, i HAVE REMOVED THE RADIATOR , THE FRONT END AND THE PULLEY. DO I NEED TO REMOVE THE TIMING COVER OR DO I SIMPLY PULL THE SEAL AND REPLACE IT. I HAVE READ THE MANIUALS BUT I AM STILL UNCLEAR.

THANKS. JIM

Replies:

Posted By: SteveM C/IL
Date Posted: 27 Oct 2026 at 10:00pm

I've not worked on that engine but have done WD45 and 8000 426's but leaving cover in place and pulling seal with screws and prybar. CLEAN welland drive new in. That's the tricky part as you need a driver that fits the seal and has the depth. Usually something specially fabricated at least for me....