Farm Equipment - d17 diesel starter drive

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d17 diesel starter drive

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=46915
Printed Date: 30 Aug 2025 at 7:50am
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Topic: d17 diesel starter drive

Posted By: donais
Subject: d17 diesel starter drive
Date Posted: 08 Mar 2012 at 10:27pm

just got a new drive for it. im putting it together and it looks like the gear doesnt retract all the way do they come in a locked position? any ideas? thanks again jon

Replies:

Posted By: donais
Date Posted: 09 Mar 2012 at 9:21pm

so i got it assembled and bench tested it and as i thought it is in the full out position. spins great but stays out. I dont want to but i think i might be taking the drive snapring off and degut it and see whats up in there. any advice on stuff to look for?

Posted By: Orange Blood
Date Posted: 10 Mar 2012 at 6:58pm

If it is the new positive ratchet style, that is the way it is, only after the tractor starts, and spins it faster will it release an internal latch and then the gear will fully retract.

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Still in use:
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Posted By: donais
Date Posted: 10 Mar 2012 at 9:07pm

ok i put it all together and spun it up but it didnt release so i took the gear off and the snap ring and turned it to the next starting set of threads and it went to the buttom. I put it together and spun it up and it works good . should i put it back to the way it was and wait for it to release on its own or should i be good to go? i guess it just didn't spin fast enough. any more thoughts... ps i hade to braze up the oblong nosecone very nervous about brazing cast inor but heated it very slow and cooled it even slower i put it in a trash can full of wood ashes. (holy crap i now know the best insulation in the world 4 hours later it was still to hot to touch) thanks again jon

Posted By: donais
Date Posted: 11 Mar 2012 at 1:37pm

Ok I got my head wrapped around it and I got it right. It came to me this morning while eating breakfast

Posted By: Orange Blood
Date Posted: 11 Mar 2012 at 1:41pm

Jon,

As far as the starter drive I can't tell you for sure without seeing a picture of it. The newer ratchet drives require the engine to spin the drive faster than the starter can before it will release, this is a design to eliminate the momentary disengagement of the drive when only one cylinder fires, but the engine doesn't run, on some of the old drives that was enough to throw the Bendix back, and then you broke teeth, or ground them.

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Still in use:
HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060
Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7