Construction and other equipment - Replacing HD5 Dozer flywheel clutch

Replacing HD5 Dozer flywheel clutch

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=32160
Printed Date: 26 Jun 2025 at 2:18pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Replacing HD5 Dozer flywheel clutch

Posted By: dyno
Subject: Replacing HD5 Dozer flywheel clutch
Date Posted: 13 Jun 2011 at 8:55am

I just blew up the flywheel clutch on my HD5 dozer. It stays engaged all the time and chatters like crazy. How hard is it to replace? Parts source? I did the steering clutches myself last year...hopefully it is a lot easier than that job.

Replies:

Posted By: gemdozer
Date Posted: 13 Jun 2011 at 12:08pm

I am still have some parts for the dry master cluch and me I prefer changed a stering cluch than the master cluch.

Posted By: Coke-in-MN
Date Posted: 13 Jun 2011 at 6:14pm

Can be done in the machine , just remove the floor plates and then linkage, power shaft to trany , then bell housing. which gives you access to the clutch.

As it is a over center clutch it snaps over to lock on by moving the throw out bearing in or out , this is attached to pressure plate with arms pinned to bearing carrier and pressure plate.

Full clutch is also adjustable. check the bushing that the bearing runs on also for wear as it centers the full unit to flywheel. One reason to always idel machine with transmission in neutral and clutch ingaged is to keep from wearing out the brass bushing.

I am using a ceramic button clutch in mine now and have only replaced one unit since I went to that. in 40 years of owning machine have been into clutch twice, and last time just one of the arms came off as cotter pin on pin came out and let arm flop.

While your in there , replace the pilot bearing with a sealed ball bearing instead of open bearing if it has not been done already. This way you plug the end of crank shaft where the oil wick is and use modern bearing.

-------------
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Posted By: dyno
Date Posted: 13 Jun 2011 at 7:37pm

Thanks for the info guys. I will tear it down when I get some spare time and see what needs replaced. I pushed about 5,000 yards of shale rock for my new house pad last week. It gave up the ghost on the last couple of loads!

Posted By: Coke-in-MN
Date Posted: 14 Jun 2011 at 5:50am

thing to remember is not to use the main clutch as a slip clutch , in or out. Know it is easy to get in the habit of inching machine while loading using the clutch but being a dry clutch it shortens the life .

-------------
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."