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Garden Tractors Discussion Forum

Deere LA 120,130 X300 tractors, which transmissio

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03-12-2007 21:04:37

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I've looked on the Tuff Torque site and through the Deere parts catalogue but remain puzzled on the trans specs.

The X300/320/340 tractors use a Tuff Torq K46 or a derivative there of. Rated for 131 to 171 ft lb torque and 675lbs axle weight max. Powdered metal gears.

The 19.5HP LA110 and 21HP LA120 uses a hydrostatic trans with a Deere part number of AM134582.

The 21HP LA130,23HP LA140,26HP LA150 use the M1A10911?

The LA tractors are using a “cheaper” dry disk brake trans than the internal wet brake K46 ? It looks like a K55? The Tuff Torq site lists their K46 as their lightest duty trans and post no specs on a K55 but they do show a parts diagram etc for the K55. Does anybody know what axle torque, axle dia and weight capacity a K51 or K55 is rated for? Or for that matter what transmission(s) Deere is actually using in the LA line of lawn tractors?

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R. Behrens

03-22-2007 16:20:53

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 Re: Deere LA 120,130 X300 tractors, which transmi in reply to buickanddeere, 03-12-2007 21:04:37  
LA 120 uses the T40.
Although the T40 has same physical appearance as the K46 transmission, it is has a different specification as a result of lighter internal hydrostatic & gear components.

The rated torque of each is as follows:
T40 - 130 ft lb.
K46 - 171 ft lb.


Duane Deardorff
Tuff Torq Corporation
5943 Commerce Blvd
Morristown, Tennessee 37814

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