Farm Equipment - Help Needed To Replace Main Seals in WD-45

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Help Needed To Replace Main Seals in WD-45

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=131854
Printed Date: 31 Oct 2025 at 3:59pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Help Needed To Replace Main Seals in WD-45

Posted By: 1terrygladys
Subject: Help Needed To Replace Main Seals in WD-45
Date Posted: 26 Nov 2016 at 6:39pm

Dear Forum Friends,

My favorite tractor of all time, the 56 WD-45 that I grew up on, is leaking terribly from the front main seal. Also leaks some from the back one. I have never torn an engine down in my life, but there is no mechanic around my old home place to do the job. So I'm considering doing the job myself, with your help.

First question (probably seems dumb to most of you) is: Can I replace the front seal without tearing the engine down? Any way to replace that seal from the bottom if I remove the pan?

I've looked at the video about replacing these seals on this site a couple times, and it will be very helpful. But I'm still vainly hoping I can come up from underneath for the front one.

Whaddaya think?

Thanks, Terry

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WD-45, WD, Unstyled WC, SC Disk, JD 4430D, JD 4010D, JD B, Iowa pastor & disciple of Jesus Christ

Replies:

Posted By: d17brown
Date Posted: 26 Nov 2016 at 7:14pm

would reccomend pulling the engine, put it on a stand, take pan off and replace pan gasket and rear main. rear main bearing cap has the main seal in it.

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phil

Posted By: DrAllis
Date Posted: 26 Nov 2016 at 8:23pm

Front seal could be done in chassis. Rear seal the engine has to be pulled.

Posted By: 1terrygladys
Date Posted: 26 Nov 2016 at 9:10pm

Thank you for your help!

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WD-45, WD, Unstyled WC, SC Disk, JD 4430D, JD 4010D, JD B, Iowa pastor & disciple of Jesus Christ

Posted By: MACK
Date Posted: 26 Nov 2016 at 9:33pm

When you get the rear main out, get back on hear and some one will give you the do's and don't's before you start back togather. MACK