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 Allis Chalmers and Simplicity Garden Tractors
 B-Series & Simplicity Classic Tractor Restoration
 Brakes, Steering and Tires
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Posted - 01/04/2009 :  17:02:23  Show Profile  Visit B112's Homepage Send B112 a Private Message


Here's are some sketchs of the steering system for the 3012H, B10 early and 725/B1. There was a change in the steering between the early B10/725/B1 and the later tractors.

3012H Steering:

One change to note is the round gear verses the triangle shaped gear parts BJ in the 3012H sketch verses BF in the B10 early and 725/B1 sketches.

3112H (left) verses the B10 early (right) Steering Column:

B10 early front axles:

Simplicity 725 and the B1 front steering:

Steering comparison which shows the serial number change over (early verses late B10):


Tire sizes for various models

725, B1 and early B10 - thin front tires & thin back tires
Big Ten - thin front tires & introduction of the regular back tires
B12 - wide front tires & regular back tires
B112, 3012 - wide front tires & regular back tires
HB112 & 3112H - wide front tires & introduction of the wide back tires

Front Tires
There were two sizes used for the front tires.
Thin - Carlise 4.8/4-8
Wide - 16 x 6.50 x 8

Some sample pricing:
Tire PN Price
CARLISLE TIRE ST165092 $30.47
480/400 8 2PLY TL TU MW4082TFI $18.24
400 8 4PLY RIB LW TL MW4084LWI $12.05

Rear tires
There were three sizes of rear tires on the older Simplicity models.

Thin - 23x6.50-12
Regular - 23x8.50-12
Wide - 23x10.50-12

Front wheel (outside, no seal) TIM LM11949
Inner bearings (with integral grease seal) TIM LM11900LA
bearing races (cones) TIM LM11910

Other articles related:

Sloppy Steering - http://www.michaelstractors.com/forum/topic.asp?TOPIC_ID=1432&SearchTerms=steering

Loaded Tires - http://www.michaelstractors.com/forum/topic.asp?TOPIC_ID=1450&SearchTerms=steering

4 flats On a B112 - http://www.michaelstractors.com/forum/topic.asp?TOPIC_ID=2260
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