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 Allis Chalmers and Simplicity Garden Tractors
 Simple Attachments (Simplicity & AC) Reference
 Rotary Tillers
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B112

USA
4817 Posts

Posted - 03/16/2007 :  17:45:39  Show Profile  Visit B112's Homepage Send B112 a Private Message
Rotary Tillers


There were seven rotary tillers made which fit the Classic B-Series and associated Simplicity tractors:

1. 36" Rotary Tiller 1690039
2. 36" Rotary Tiller 990694
3. 36" Rotary Tiller 990545
4. 36" Rotary Tiller 990503
5. 32" Rotary Tiller 990455
6. 32" Rotary Tiller 990392
7. 32" Rotary Tiller 990174 (round covers)

This is the repair manual for these tllers:
http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_500_0570_00_AT_S.pdf

Here is a video of the 990694 Rotary Tiller on a Simplicity 3112H Hydrostatic Garden Tractor. Watch how the hydrolift really helps lift the tiller and makes the job really easy:

http://www.youtube.com/watch?v=IdCfyjrJU6w

Here is a video showing the 990694 Tiller on a Simplicity 3012 with the manual lift:

http://www.youtube.com/watch?v=2HoIhjqUTMQ

Below is a comparison of these tillers.

Tiller Comparison:

Below are sketches of each type of tiller so that you can compare your tiller to these sketches and determine the type of tiller you have. You will also need the PTO Setup which will hook your tiller up.

36" Rotary Tiller 1690039


Note: Notice the above sketch of the tiller, this tiller does not have the clutch mechanism needed by the classic machines.

The manual indicates to use 96" Belt PN:105340 on the 12HP and to use 88" V-Belt PN:105287 on the 10HP. For the B12 or 2012, you'd use the 105287 belt because these use the 10HP frame.


Simplicity Manual:
http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_100_2274_00_AT_S.pdf

36" Rotary Tiller 990694

(no picture ... yet)

Simplicity Manual:
http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_400_1336_00_AT_S.pdf

36" Rotary Tiller 990545 & 990503



The manual indicates to use 96" Belt PN:105340 on the 12HP and to use 88" V-Belt PN:105287 on the 10HP. For the B12 or 2012, you'd use the 105287 belt because these use the 10HP frame.

Simplicity Manual:
http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_400_1314_00_AT_S.pdf

32" Rotary Tiller 990455



Simplicity Manual:
http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_400_1292_00_AT_S.pdf

32" Rotary Tiller 990392



Simplicity Manual:
http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_400_1278_00_AT_S.pdf

32" Rotary Tiller 990174



Belts:
S- 154273 - 42" belt
T- 105122 - 55" belt ? Jacks has a 56" True Belt here...?

Simplicity Manual:
http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_400_1233_00_AT_S.pdf


Tiller PTO Setups:

32" Tiller PTO Setup
This is a clutch pulley setup for tillers without a clutch:






36" Tiller PTO Setup
This is a pulley setup for tillers which have the clutch:


The tiller PTO Assembly bracket "AK" slides over the shaft circled below:


This sketch shows the tiller PTO Assembly mounted:


This sketch shows how the belt routes over the tiller PTO Assembly:


The following two photographs are this PTO Assembly:


Note: The 32" clutch/PTO setup can be used on a 36" tiller which doesn't have a clutch. The 36" tiller 1690039 came without a clutch for the newer tractors.

Tiller Kits:

This is the tiller kit instructions for using the 990392 32" tiller on the Soveriegn Tractors:


Tiller Difference for 700, 725 and B1:

Notice that the 700, 725 and B1 had a long straight bar used instead of pins.



Tiller MFG# 990694 Installation pictures:

The picture below shows the frame length of the Simplicity 3012 tractor makes the distance between the BGB pulley to the rear clutch pulley at around 21.5" and this tractor needs an 96" belt.


The picture below shows the frame length of the Allis Chalmers B12 tractor makes the distance between the BGB pulley to the rear clutch pulley at around 16.5" and this tractor needs an 88" belt.


The picture below shows where the belt stop would go if this one did not break off. This can operated without the belt stop, but the tiller will always spin. The tractor should be turned off before getting on or off the tractor.


The picture below shows the size of the tiller drive pulley.


Other discussions to review: (register to review)

http://www.michaelstractors.com/forum/topic.asp?TOPIC_ID=2816
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