Re: 1939 M Questions

Posted by Ken Kaepernick on March 11, 2002 at 06:20:22 from (209.242.236.247):

In Reply to: 1939 M Questions posted by Mr. J on March 10, 2002 at 20:02:28:

Regarding the 5th gear problem -- One of the problems with the transmissions in the M's and H's was the front bearing on the main transmission shaft. It is the bearing that goes inside the constant mesh gear at the front of the transmission. The two shafts turn at different speeds except when the transmission is in fifth. In order to shift into fifth, the 4-5 sliding gear (on the mainshaft) must slide over the constant mesh gear. If the bearing is out the two do not align properly, and shifting to fifth is very difficult if not impossible. The problem arises in tractors that have been used primarily in fourth gear. If memory serves, the early M's had a ball bearing in this location, while the later tractors used a needle bearing which was better able to handle the side thrust of the shaft.

Good Luck

Ken Kaepernick

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