Construction and other equipment - HD7GB loader rear engine seal #

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HD7GB loader rear engine seal #

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=206797
Printed Date: 20 May 2025 at 5:36pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: HD7GB loader rear engine seal #

Posted By: Braswell
Subject: HD7GB loader rear engine seal #
Date Posted: 20 May 2025 at 8:48am

I have the wet bellhousing and I need seals for the crankshaft . There are 2 separate seals … one facing the engine and the other facing the bellhousing. They are identical National # 77286HC I’ve tried a few places to match them up but I need the Original Allis Chalmers part number for them. All I can find is the seal for a dry bellhousing housing.
Reliance sent a seal they say is a double lip but it sure doesn’t look like one . Any help appreciated or where to find the parts manual
Randy

Replies:

Posted By: Codger
Date Posted: 20 May 2025 at 10:40am

What is the serial number of the tractor and engine? Four, or six cylinder?

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That's All Folks!

Posted By: Lazyts
Date Posted: 20 May 2025 at 12:45pm

74029500 seal from Minnpar is about $50. Pretty sure the 670 had same rear seal as 685/11000 series.

Posted By: AC Mel
Date Posted: 20 May 2025 at 3:04pm

Yes...I concur with Trevor....that part number should be 74029500...available from Minparr. should be applicable to tractor serial numbers 27201-27950 and 34U27951-up. My parts books do not show any configuration of 2 seals....have no idea of what you might have going on there? Yes that seal is the same for both the 3500 and 11000 engines

Posted By: DMiller
Date Posted: 20 May 2025 at 3:55pm

Problem with a Gb is they use a IVECO Engine. Totally Different Animal.