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AC HD6 parts

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=201538
Printed Date: 06 Apr 2025 at 5:41am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: AC HD6 parts
Posted By: erb224
Subject: AC HD6 parts
Date Posted: 28 May 2024 at 2:41pm
Hello All - 

I'm looking at a HD6 in my area. Price seems reasonable, but I don't know much about dozers. Are parts readily availbale for an HD 6? (I guess from the tag its an HD-6B).

The reason I ask is the sprockets look a little pointy and the owner says its 'slow to turn' in one direction.



Replies:
Posted By: Coke-in-MN
Date Posted: 30 May 2024 at 12:07pm
Parts for undercarriage are getting hard to find , they share same parts as HD5 machines in sprockets, rollers , idlers , and new are next to impossible to find . 
 Slow turning in one direction ? should be the same either way as direct drive to either track , slipping clutch , worn brake band , or other problem in drive 

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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: Les Kerf
Date Posted: 30 May 2024 at 2:31pm
Originally posted by erb224 erb224 wrote:

...the sprockets look a little pointy and the owner says its 'slow to turn' in one direction.

RUN, do not walk, away from this money pit!Dead


Posted By: gemdozer
Date Posted: 31 May 2024 at 7:44am
I am still have some used HD6 parts but no track


Posted By: CAL(KS)
Date Posted: 31 May 2024 at 7:54am
scrap price minus haulage and cut up.  if it turns out to be more than a t**d, you can part the good stuff and get your money back on the rest.  otherwise a labor of love

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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15


Posted By: erb224
Date Posted: 31 May 2024 at 1:43pm
Maybe images will help...




Posted By: erb224
Date Posted: 31 May 2024 at 1:44pm


Posted By: Les Kerf
Date Posted: 31 May 2024 at 2:04pm
Originally posted by erb224 erb224 wrote:

Maybe images will help...



That undercarriage is junk. No one makes new undercarriage parts for these, so unless you know of a source for some used, serviceable parts there isn't much life left in it.


Posted By: Coke-in-MN
Date Posted: 31 May 2024 at 2:28pm
How the bushing is after running on that sprocket is another question , if worn on both sides FORGET IT . Some IH track will work but that supply is also hard to find . 
 Finding weld on sprocket rings next to impossible . 

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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: Codger
Date Posted: 31 May 2024 at 2:44pm
In reality this is best a parts machine to keep others operational. Father Time has taken his toll on old AC machinery and although a very handy little dozer in it's day, that day has passed. All is not lost however. As I don't know your level of commitment, but a good welder/fabricator and skilled machinist willing to help out could make the track perform like new.  Lot of time and work but those sprockets and chains, (unless cracked) can be rebuilt to new specification. The chinese can replicate the pins and bushings as they did mine and they seem to be just as good as original parts at relatively reasonable pricing. Again, this will take quite a bit of time and commitment,  but can be done. 

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That's All Folks!


Posted By: erb224
Date Posted: 31 May 2024 at 8:37pm
Originally posted by Codger Codger wrote:

In reality this is best a parts machine to keep others operational. Father Time has taken his toll on old AC machinery and although a very handy little dozer in it's day, that day has passed. All is not lost however. As I don't know your level of commitment, but a good welder/fabricator and skilled machinist willing to help out could make the track perform like new.  Lot of time and work but those sprockets and chains, (unless cracked) can be rebuilt to new specification. The chinese can replicate the pins and bushings as they did mine and they seem to be just as good as original parts at relatively reasonable pricing. Again, this will take quite a bit of time and commitment,  but can be done. 

My dad and I are farmers so welding/fab isn't an issue and Dad was a machinist as well... The issue would be time. We don't have a ton of it with me having a full time job plus the farm.

Thank you all for the advice, I'll leave this one where I found it.


Posted By: Codger
Date Posted: 31 May 2024 at 9:21pm
I think that a wise decision. I say from doing the actual work needed when having much more time than anything else it is a lot of work but can be done.

That's without even getting into the clutch(s) for the steering problem.


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That's All Folks!


Posted By: HD6 Merv
Date Posted: 03 Jun 2024 at 1:14am
Interesting thread.   For all yours info, down here at the bottom of the world, new zealand ALOT of HD6s were sold here new. And while alot of parts, engine parts especially, are very hard to find.   We can buy brand new Track chain groups, rollers and sprocket rims here.
Is alot of us here still using HD6s for part time work. And between me and 5 other mates have at least 2 dozen between us.
In fact just bought a brand new set of sprocket rims for my HD6E.
Made in italy by Passini group.
Mind you we have a fantastic local undercarriage company who went out of his way to get us this stock.


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tits tyres and tracks

they all cost you money


Posted By: Coke-in-MN
Date Posted: 03 Jun 2024 at 1:44pm
It's a shame here in the US that no one will IMPORT these parts , instead it's you need to find a newer machine to use and scrap what could be fixed . 
 Then it's not just 50's. 60's and 70's but even my Fiat Allis FD 5 that is hard to find parts for as used track was all I could find last time I needed replacement .

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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: Dozer987
Date Posted: 11 Jun 2024 at 10:17am
The sprocket can be repaired. Pigeon Products sells inserts that can be welded to the sprocket. Or you can take 1/4 wall tubing cut to sprocket width then cut to form "C" shaped inserts. I also have 4 HD5 chains in my collection of parts.



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