Farm Equipment - Ever take a Sherman step up apart?

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Ever take a Sherman step up apart?

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=11476
Printed Date: 24 Jan 2025 at 4:55pm
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Topic: Ever take a Sherman step up apart?

Posted By: Unstylish
Subject: Ever take a Sherman step up apart?
Date Posted: 24 Apr 2010 at 6:53pm

I have a sherman step up. It does not do me much good with a 30 percent increase. I was wondering if I could swap the gears and change the ratio to a step down. I makes sence from a manufacturing standpoint to have changeability, but I dont want to go through all thew work if someone on here can tell me, OR more importantly, tell me what is inside one, and what to expect. Thanks..

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The problem with reading MLPANKEYS posts, is that they dont make boots that tall.

Replies:

Posted By: Larry(OH)
Date Posted: 24 Apr 2010 at 7:14pm

I have had the rear of my step up apart, but no further. All I really know is there are 2 different gear WIDTHS, but as far as making a drop, I am not sure. If it can be done, I would consider it. I need the rear gear that gets lost when they come apart. I have the wide gear which if I remember is 1 1/2" wide

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'40 WC puller,'50 WD puller,'50 M puller '65 770 Ollie

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I can explain it to you, BUT I cannot understand it for you!!

Posted By: mlpankey
Date Posted: 24 Apr 2010 at 7:34pm

finish that picture of the big motor and you probably like the stepup. I finished machining the new large cap distributor to fit today. need to put the magnetic pick up and reluctor back in it make up the wires time it .Then I should be putting ole timebomb in the tractor next weekend and routing the oil cooler lines . Smelling smoke is getting close for me.

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people if they don't already know it you can't tell them. quote yogi berra

Posted By: Brian Jasper co. Ia
Date Posted: 24 Apr 2010 at 9:51pm

If it is like what the N series Fords used, no you cant turn the gears around. Housing won't allow it.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford

Posted By: Dave H M
Date Posted: 25 Apr 2010 at 7:33am

Head over to John Smith's Old Ford Trasctors. He has a great pictorial on the Sherman trannies. I used it entensively to get the problem fixed in my step up/down sherman.

Posted By: Unstylish
Date Posted: 25 Apr 2010 at 3:41pm

Gets lost when they come apart?

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The problem with reading MLPANKEYS posts, is that they dont make boots that tall.

Posted By: RyanTN
Date Posted: 25 Apr 2010 at 3:52pm

I talked to my dad last night. He has both Sherman step up and step down transmissions for WC's (two different transmissions). The gears inside are different, but the cases are the same. So if I understand your question correctly: no you cannot swap the gears around inside a step up to make it a step down. But if you found the gears from a step down, you could put them in your step-up case.

He has a parts manual that he has temporarily misplaced. Once he finds it, he said that he will tell me exactly which gears are different. He said he knew for sure the "two gears in the back" were different. He said they did have the same tooth count, just reversed.