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B crankshaft pulley replacement
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The Consultator View Drop Down
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Joined: 19 Sep 2017
Location: Rio Rancho, NM
Points: 120 		Post Options Post Options   Thanks (0) Thanks(0)   Quote The Consultator Quote  Post ReplyReply Direct Link To This Post Topic: B crankshaft pulley replacement
    Posted: 07 Apr 2018 at 1:27pm
I need to replace the crankshaft pulley on my B. Unfortunately, the set screw and lock nut are perfectly aligned with the nose weight plate. I can't reach the screw or nut without taking the plate off.

Dumb question: I don't have a service manual yet. which comes out first- the set screw or the lock nut?

I need to remove the front axle from the nose weight plate. I figure I might as well replace the bushings in front and, and replace the wheel bearing assemblies in the front while I'm at it.

Another question: Do I need to remove the grease points to disassemble the front end?

This is turning out to be a chore for just the crankshaft pulley. I'm also going to replace the radiator, water pump, thermostat, and temperature gauge since it's all apart anyway.   
1939 Allis-Chalmers "B" restored in 2010- very good condition.
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Dick L View Drop Down
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Joined: 12 Sep 2009
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Points: 5087 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dick L Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 2018 at 2:44pm
Seems like if the lock nut actually had the setscrew locked you might have a problem removing the screw first.
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The Consultator View Drop Down
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Joined: 19 Sep 2017
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Points: 120 		Post Options Post Options   Thanks (0) Thanks(0)   Quote The Consultator Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 2018 at 2:52pm
That's why I ask the pro's... 
1939 Allis-Chalmers "B" restored in 2010- very good condition.
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Dick L View Drop Down
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Joined: 12 Sep 2009
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Points: 5087 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dick L Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 2018 at 4:40pm
Originally posted by The Consultator The Consultator wrote:

That's why I ask the pro's... 


You might find something that helps if you have time to go thru a few albums. I never had a weight plate for a B.

https://public.fotki.com/DickL/
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The Consultator View Drop Down
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Joined: 19 Sep 2017
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Points: 120 		Post Options Post Options   Thanks (0) Thanks(0)   Quote The Consultator Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 2018 at 4:53pm
http://www.allischalmers.com/forum/uploads/17624/Allis_2c.jpg
1939 Allis-Chalmers "B" restored in 2010- very good condition.
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The Consultator View Drop Down
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Joined: 19 Sep 2017
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Points: 120 		Post Options Post Options   Thanks (0) Thanks(0)   Quote The Consultator Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 2018 at 4:56pm
The iron below the water pump inlet with the rag for a plug is what's giving me trouble. I'm calling that a nose weight plate, but I'm not shocked if I'm wrong. I currently have the fan, and adjustable pulley removed, but the crankshaft pulley nut faces that piece of curved iron just so, that I can't get it off without disassembling the front end so I can remove the rest of the pieces under the radiator mount.
1939 Allis-Chalmers "B" restored in 2010- very good condition.
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Dick L View Drop Down
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Points: 5087 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dick L Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 2018 at 5:05pm
terminology I guess! You be talking about the pivot plate the has the pivot bolt welded in that is held in with four studs into the engine block. You will want to remove it for what you are doing. Not if you were just removing the axle.

You can see in the background a B with the pivot on and the axle off.
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The Consultator View Drop Down
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Joined: 19 Sep 2017
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Points: 120 		Post Options Post Options   Thanks (0) Thanks(0)   Quote The Consultator Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 2018 at 5:07pm
That's it! "Pivot Plate." Thank you for the help. That darn PP is in my way. 
1939 Allis-Chalmers "B" restored in 2010- very good condition.
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Gerald J. View Drop Down
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Joined: 12 Sep 2009
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Points: 5636 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerald J. Quote  Post ReplyReply Direct Link To This Post Posted: 07 Apr 2018 at 5:48pm
A copy of the shop manual is on line at:
http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf

Gerald J.
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The Consultator View Drop Down
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Thanks Gerald!
1939 Allis-Chalmers "B" restored in 2010- very good condition.
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Points: 120 		Post Options Post Options   Thanks (0) Thanks(0)   Quote The Consultator Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2018 at 8:29am
I got the newsed pulley on. Dropping/reinstalling the front end wasn't as bad as I thought. Everything went back together nicely. Now all she needs is a cleaning. The first antique car and tractor show near me in on May 5th. from what I've heard, I should be the only orange there.
1939 Allis-Chalmers "B" restored in 2010- very good condition.
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Dick L View Drop Down
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Points: 5087 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dick L Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2018 at 9:41am
Good Deal! Have fun and take pictures.
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