Construction and other equipment - HD6 Oil Bath Air Cleaner ?

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HD6 Oil Bath Air Cleaner ?

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=52790
Printed Date: 31 Oct 2025 at 1:46am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: HD6 Oil Bath Air Cleaner ?

Posted By: orangeman
Subject: HD6 Oil Bath Air Cleaner ?
Date Posted: 29 Jun 2012 at 5:45pm

Guys - My 1958 HD6 G is finally home. Whoo hoo! Working my way through the systems and found the oil bath air cleaner had about a quart of water inside. Looks like I need to consider a retrofit because the inner mesh is all rust. It has oxidized to the point that the side of the housing is rusted through as well.

Two questions:

1. Would it be better to find a good oil bath filter to replace? Or,

2. Should I consider a retrofit by gutting the old mesh and size an dry element air filter to put inside to make it into a dry element air filter.

Wondering if the later 6's had a dry element air cleaner equipped. Any help appreciated. Thank-you! Orangeman

Replies:

Posted By: orangeman
Date Posted: 30 Jun 2012 at 8:38pm

Ok - I got the oil bath filter cleaned up, only the bottom portion of the wire mesh was bad so removed it and replaced it with new wire mesh from Farm Family store. One side has a small area that is rusted through so will cut that out and weld in a piece of stainless.

Guess I stay with the oil bath for now. I did see some later HD 6's that looked like they had a dry element filter mounted behind the valve cover.

Made good progress today, replaced all the bolts on the final drive and steering clutch covers.

BTW where is the key switch located on the early HD6's?

The one I am working on is a a 1958 I was thinking tit should be on the dash.

Posted By: Dozer
Date Posted: 01 Jul 2012 at 8:21am

The key switch is on the dash below the light switch but I don't think the 1958 had one. If it survived there might be a battery disconnect in the battery box. My newest HD6G has the foot starter switch.

Posted By: HD6GTOM
Date Posted: 05 Jul 2012 at 6:43pm

I have 1 with the key switch mounted in the batterybox to the left side of the seat.