Construction and other equipment - HD5 transmission --gear source or rebuilder

Print Page | Close Window

HD5 transmission --gear source or rebuilder

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=140266
Printed Date: 02 Aug 2025 at 11:16pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: HD5 transmission --gear source or rebuilder

Posted By: Rainwood
Subject: HD5 transmission --gear source or rebuilder
Date Posted: 09 Jul 2017 at 8:07pm

Hi all , I had some issues with transmission in my HD5 B a while back making noise. I finally got serious about getting it pulled it out to see what the issue was.

There were teeth lying in the bottom of the case and gear oil the color of milk filled coffee. Guessing water got in through the PTO cover.

1. Does anyone know where I can get gears and parts?

2. Anyone deal in rebuilds for something this old??

3. Any manuals with exploded view of how this goes together?

thanks Rainwood

Replies:

Posted By: gemdozer
Date Posted: 10 Jul 2017 at 5:16am

I am still have the HD5 transmission gears

Posted By: Rainwood
Date Posted: 10 Jul 2017 at 10:40pm

Hi ,

You are a re-builder? or selling parts?

Where are you located?

Posted By: gemdozer
Date Posted: 11 Jul 2017 at 4:40am

I am selling used parts and I dismantled 6 HD5 for parts and should have all the transmission parts and am located in CANADA near MONTREAL.

Posted By: Coke-in-MN
Date Posted: 11 Jul 2017 at 10:36pm

It depends if you have early or late trany - single speed reverse or 2 speed .
Most gears are the same but the reverse idler changes along with one gear on top shaft .
Plan on new output bearing also - that double row ball unit will run you well over $100 - have replaced 3 of them over life of my machine .

Sold my spare trany a while back but have a few gears for single speed reverse unit .

Water gets in through the shift boot on selector lever .
Check side bearing on the ring gear also - and when rebuilt be sure to reset the lash of ring and pinion - another fun job .

-------------
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: Rainwood
Date Posted: 12 Jul 2017 at 2:44pm

Gemdozer, In your collection, do you have a serviceable transmission that you might consider selling?

Posted By: Rainwood
Date Posted: 12 Jul 2017 at 2:48pm

Hi Coke This is a 1953 . I can post a picture of the trans later that might help identify .

No idea how to about the ring / pinion lash. Isee there are some reprint manuals out there . Will it cover this?

Posted By: gemdozer
Date Posted: 12 Jul 2017 at 5:30pm

I am still have a complet HD5 transmission but I removed the side inspection plate and 2 gears are't nice and anyway should be too expensif for shipping and I give you tomorrow my gears and shafts the parts number for the transmission.

Posted By: Coke-in-MN
Date Posted: 13 Jul 2017 at 8:59am

Yes the service manual covers all of it well -
If you replace the output bearing of trany then lash will need to be checked

also check the bushing in any gear for reverse idler they wear - I found replacement from another source that worked - but forget what now

Posted By: Ages Cat
Date Posted: 13 Jul 2017 at 1:53pm

Rainwood: I sent you a private message.

-------------
Curt Anderson
HD3, HD5B, HD6AG,HD6B dozer, I-400,615, 616,620,720,ACP25 lift truck, 1956 D Grader, AC 540 loader, AC #84 plow, Simplicity tractors, Agco MT225, Agco 2025,

Posted By: gemdozer
Date Posted: 13 Jul 2017 at 4:12pm

I send you the gears and shafts part number for HD5 transmission gear

049922-049921-073001-049924-049915-049944-049934-068797-049933-049919

068807

input shaft 049943- top shaft 049938-pinion shaft 057415 and have all good bearings