Farm Equipment - final drive on an allis b

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final drive on an allis b

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=34145
Printed Date: 10 Sep 2025 at 3:26pm
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Topic: final drive on an allis b

Posted By: keithm
Subject: final drive on an allis b
Date Posted: 19 Jul 2011 at 4:25am

my allis b s/n b50136 has final drives with wheel studs that hold the center hub in place

and clamps that hold the wheel rim in place.

is this the right final drive or has someone change it out at some time

i can't get any history on this tractor

Replies:

Posted By: Ken in Texas
Date Posted: 19 Jul 2011 at 8:09am

Allis Bs had three distinctly different factory final drive assemblies. The most common is the wheel center hub is splined and is held to the splined axle with 1 big nut. The other has a 5 bolt flanged axle like a C and uses a C style reversable hub. The one not often seen but not rare uses a splined adapter hub held to the splined axle 1 big nut. The Adapter allows a reversable 5 hole semi dished wheel center to be used. The bolt circle is the same as a C.

All AC B&C rims used rim clamps. 2 regular and 2 excentrics. Standard 4 loop rims will work without the clamps.

Posted By: keithm
Date Posted: 19 Jul 2011 at 5:16pm

WOULD THE FROUNT AXLE ON THIS TRACTOT BE AJUSTABALE OR WOULD BE FIXED

Posted By: Ken in Texas
Date Posted: 19 Jul 2011 at 6:56pm

The logical answer may not be the right answer.

If the rear tread is adjustable by reversing the dish on the 5 bolt hubs/wheels. The front axle should also be one of the adjustable types.

The B is considered a one row tractor capable of tread adjustment widths from 38'' to 65'' with the correct tread adjustment options.