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DD grader drive chain

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66impalarhd View Drop Down
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Joined: 13 Mar 2018
Location: Australia
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 66impalarhd Quote  Post ReplyReply Direct Link To This Post Topic: DD grader drive chain
    Posted: 13 Mar 2018 at 6:59am
Can you tell me where I can get new drive chains from.
My DD has narrow chain links that don't seem to be available.
The rollers are only 3/4" wide whereas standard chain is 1" wide.
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DonBC View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DonBC Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2018 at 12:03pm
I ordered new chain a few years ago from a bulk chain supplier. I gave them the information on the chain from my parts book and they had similar chain in stock and I the new chain within a week. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DonBC Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2018 at 3:39pm
I am not sure but I think that chain was identified by a number, #60, #80, etc.  plus pinch and number of links. I don't remember the number but it was listed in the parts book.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dnoym N. S. Can. Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2018 at 5:57pm
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66impalarhd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 66impalarhd Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2018 at 7:04am
Thanks for the info, I'll see if I can cross reference the Allis Chalmers part no.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ages Cat Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2018 at 3:54pm
It is #90. I replaced both sides on our D.
Curt Anderson
HD3, HD5B, HD6E, HD6AG,HD6B dozer, I-400, 615, 616,(2) 620, 720, ACP25 lift truck, 1956 D Special Grader, AC 540 loader, AC 655 crawler loader, AC #84 plow, Simplicity lawn tractors.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ages Cat Quote  Post ReplyReply Direct Link To This Post Posted: 14 Mar 2018 at 3:55pm
The number is stamped on the link.
Curt Anderson
HD3, HD5B, HD6E, HD6AG,HD6B dozer, I-400, 615, 616,(2) 620, 720, ACP25 lift truck, 1956 D Special Grader, AC 540 loader, AC 655 crawler loader, AC #84 plow, Simplicity lawn tractors.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 15 Mar 2018 at 11:30am
http://files.minnpar.com/partbooks/MOTOR%20GRADER%20MANUALS/ALLIS%20CHALMERS%20MOTOR%20GRADER%20MANUALS/DD%20PM%20%2373110201.PDF
Looks like page 128 
1 1/4 or 1 1/2 pitch  #100 or #120 



Edited by Coke-in-MN - 15 Mar 2018 at 11:33am
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."
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66impalarhd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 66impalarhd Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2018 at 4:22am
I checked the number stamped on the side of the chain link, it is 121.
It has an 1 1/2" pitch, but the roller is only 3/4" wide, which is not a common size. I think my only hope will be to try find NOS chain unless anyone has any other suggestions.
Standard 120 chain has 1 1/2" pitch but a 1" wide roller. This size chain is too wide for the double sprocket.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2018 at 8:21am
Sounds like the deal with bicycle chain where pitch is #40 but chain is #41 that is thinner in width . Ran into that on both bicycles and overhead garage door openers that used chain.
 Use to find a lot of things like that at old military surplus places that handled vehicle parts or surplus military hardware - know for a steer axle CV joint for  my Pettybone loader I found one at a place like that over in Mpls - but most of those places are gone now over there as City is beautifying areas and putting up appt buildings and condos for yuppies

Edited by Coke-in-MN - 19 Mar 2018 at 8:32am
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."
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DiyDave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2018 at 6:28pm
Found this on google:


You might find it in the oilfield industry, saw 121-2 and 121-3 (double and triple) listed fer that...Wink
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JC-WI Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2018 at 10:25pm
Coke, your link got sucked up some how by that vigi-link crap on here...  Maybe this one will work better.
http://files.minnpar.com/partbooks/MOTOR%20GRADER%20MANUALS/ALLIS%20CHALMERS%20MOTOR%20GRADER%20MANUALS/DD%20PM%20%2373110201.PDF
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The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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