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AC HD6

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=180693
Printed Date: 01 Apr 2026 at 1:20pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: AC HD6

Posted By: Fortsville
Subject: AC HD6
Date Posted: 22 May 2021 at 2:50pm

Can anyone point what to look for in my purchase. Someone is selling an HD6. It’s a diesel I’m not too sure what kind of engine. It runs good just one steering clutch is screwed up What else do I look for? Price is $3500. It starts and moves.

Replies:

Posted By: gemdozer
Date Posted: 22 May 2021 at 3:19pm

The HD6 have a 344 motor ALLIS CHALMERS and about stering cluch he maybe just need adjustement and if the track chaine and sprocket are in resonable condition it't a bad deal.

Posted By: HD6GTOM
Date Posted: 22 May 2021 at 11:16pm

I've had those. Later units have a heavier bottom end inside the motor. Steering clutches come out the top. If its stuck, sometimes you can put a plug in the bottom of the steering clutch housing, pour about 10 gallon of premium #2 diesel into the top of the steering clutch compartment, leave it set for several days and it might come unstuck. The main clutch should be an oil clutch while the steering clutches are a dry clutch. What is it doing or not doing? Do you have a serial number?