WD thrust clearance issue
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=197497
Printed Date: 25 Sep 2024 at 3:41am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD thrust clearance issue
Posted By: Underdogexpress
Subject: WD thrust clearance issue
Date Posted: 02 Oct 2023 at 5:04pm
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I have a brand new wd45 crank that I'm putting into a WD block. Everything is new. The manual states that I need .011 thrust clearance, but mine is at .030. Is the only remedy for this to have the crank machined down to get the timing gear back .019? Frustrating issue for new parts. Thanks guys.
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Replies:
Posted By: steve(ill)
Date Posted: 02 Oct 2023 at 5:37pm
On a "B", i have pulled the timing gear off and machined the back side with a STEP and then pushed back on the shaft.. No machining of the shaft.
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Like them all, but love the "B"s.
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Posted By: Underdogexpress
Date Posted: 02 Oct 2023 at 6:18pm
Posted By: DrAllis
Date Posted: 02 Oct 2023 at 6:48pm
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If it was mine.....I'd stick it together. .011" is a MINIMUM.
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Posted By: Underdogexpress
Date Posted: 02 Oct 2023 at 7:27pm
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Thanks for that. I was thinking that too, but wasn't sure if it was a critical thing in these particular engines. I didn't want to assume. That can get expensive
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Posted By: steve(ill)
Date Posted: 02 Oct 2023 at 7:46pm
.011 is a minimum on that engine ? .... Working on the 125 (B-C) engines i think the spec is .004 ........ that being said, when you disassemble I have normally seen .040 - .060 which is way too much. ..... i could live with .011.
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Like them all, but love the "B"s.
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Posted By: Lon(MN)
Date Posted: 03 Oct 2023 at 6:05am
I always pull the gear and machine the end to get the correct clearance. If you use the foot clutch a lot it only gets worse.
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http://lonsallischalmers.com
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Posted By: DrAllis
Date Posted: 03 Oct 2023 at 6:39am
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Just out of curiosity, I looked in my service manual. It says .011" max. Interesting how a brand new crank is already more than that. A D-17 spec is .005" to .013", which is from the center main, not the front main. A new crank will have a perfectly smooth thrust surface as will the new main bearing. I still wouldn't sweat it.
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Posted By: Underdogexpress
Date Posted: 04 Oct 2023 at 6:15pm
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I agree, I had hoped for better, but it's what we have available. I guess the parts places bring them in for us, and it's up to us to check them out. I should have been more diligent in checking it over. Kinda makes me wonder what else might be an issue. Better than what I had though.
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