Welding on new sprockets
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=168912
Printed Date: 31 Jan 2025 at 4:53pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Welding on new sprockets
Posted By: 7060
Subject: Welding on new sprockets
Date Posted: 07 Mar 2020 at 7:26am
| Does anyone have the procedure for welding on new sprocket rings on an Hd11? Is it possible without pulling the sprocket off? |
Replies:
Posted By: Coke-in-MN
Date Posted: 07 Mar 2020 at 11:15am
|
Yes , on my HD5G I had the sprocket ring and cut a section out to slip over the truck rail and outboard bearing . then welded that section back into ring and welded the spokes to the sprocket ring . The part is to heat the sprocket ring to expand it so when it cools it doesn't break or crack the welds to spokes of the hub . For my D6 I welded D5 Sprockets to D 6 Hub spokes again preheating the ring to expand so as it cooled and shrunk it got smaller and tighter to welds on spokes . That I did off the machine and as I was welding on one spoke you would hear a ping and a crack would show up on opposite side - heat full ring , grind out crack and weld again and reheat and weld again ------------- 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: Coke-in-MN
Date Posted: 07 Mar 2020 at 11:19am
|
one big part of the job is measuring everything close and knowing how much to cut off , make sure everything has a dimention to a known point as you can get sprocket in line with rest of machine when done - take a measurement so when you weld that section back in that you cut out of ring it is same across the distance between tooth as area not cut ------------- 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: 7060
Date Posted: 08 Mar 2020 at 9:16pm
| I was hoping to be able to weld them on the machine to keep from pulling the sprockets off. Thanks |
Posted By: Coke-in-MN
Date Posted: 09 Mar 2020 at 11:40am
|
Yep - that is done by slicing about 5 teeth out of the ring - cutting the ring at low point of the tooth circle - a section taken out to be able to slip ring over the outboard bearing and truck frame support . When I did my D6 - I put a D5 segmented sprocket (bolt on teeth) onto D6 spokes . On my HD5 - rather than remove the loader from truck frame and move the frame itself I cut the section from new sprocket ring and welded it back together then to HD5 spokes from hub . I seen a machine where a bolt on sprocket had a sprocket ring welded to the solid ring after old teeth were cut off - unsure of the reason if the center bolt pattern was damaged or if different track was used so different sprocket pitch was needed ------------- 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: Lazyts
Date Posted: 09 Mar 2020 at 7:13pm
I think if I was doing it on the machine I would cut the ring in half, and only cut one half of the old one off at a time- that way I could line it up at the same centerline as the old ring. The first one I did, I took the frames off and welded the sprockets on the machine, and they ended up with a slight "wobble". The next time I did one, I had the sprockets off, and I welded them on the bench- they ended up straight. There are two different sprocket rings for HD11- one is about 1/2" thicker (newer style) than the other, but they can be interchanged in a pinch.
|
Posted By: JohnCO
Date Posted: 09 Mar 2020 at 10:46pm
|
How many amps did you have the welder turned up to for such a nice weld? ------------- "If at first you don't succeed, get a bigger hammer" Allis Express participant |
Posted By: Lazyts
Date Posted: 11 Mar 2020 at 8:49pm
| I used my "tombstone" welder- 7018AC 1/8" rod at 120 amps. |
Posted By: Tracy Martin TN
Date Posted: 11 Mar 2020 at 9:07pm
|
Great looking job! That is craftsmanship! Tracy ------------- No greater gift than healthy grandkids! |
Posted By: steve(ill)
Date Posted: 11 Mar 2020 at 9:37pm
|
7060... you should be able to weld the sprockets while installed on the machine.. Just keep rotating so you have the weld horizontal at the top.. easier to weld than vertical or angle...... and weld a rod to the hub to attach the ground cable... You dont want any stray current running thru the shaft / bearings to a remote ground. ------------- Like them all, but love the "B"s. |
Posted By: Coke-in-MN
Date Posted: 12 Mar 2020 at 12:01pm
|
that is something many individuals do not think of when welding - WHERE IS THE GROUND - any current flowing through a bearing as a flirt with DISASTER . Same as any electric - was watching a guy weld on a truck bed - problem was the light switch was on - grounded through the lights and every bulb on the truck flashed ONCE and they were black inside bulb - dash lights included ------------- 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: LeonR2013
Date Posted: 12 Mar 2020 at 1:42pm
|
Something else to help prevent the dreaded "ping" is to preheat both pieces you are welding, and then immediately weld and move to the opposite like tightening lug nuts. Leon
|