Farmall M brake Problem

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John 37A

Member
As some of you may know, I bought a M that some of my high school cLasses are working on to make it a light weight stock puller that we are going to run at our FFA pulls. The tractor has jerky brakes that release kind of slow. The left side is a little oily and the left axle seal leaks. The axles both have a tiny bit of movement up and down (about 1/8" at the end of the axle) but the bearings seem pretty good and quiet. The brake shafts also have a little movement up and down and in an out, but I haven't seen the bearings. We just pulled the trans cover and drained the oil/sludge mix.

Is this brake jerk/shutter a common problem? I am not too familiar with farmalls and not sure where I should start. I can't spend too much time diagnosing since this is our busy time of the year.

Any help is appreciated.

John
 
Oil and glazed surfaces will do that. There should be material
remaining above the rivets on the bands, if bonded, the bands should
be more than 3/32 thick at any location. To remove oil contamination,
use brake clean spray to remove external oil, then heat the bands with
a propane torch (not oxy!!!) until the oil is baked out, Do not heat
radically, just maybe a 3to 4" length moving the torch all the time.
When the oil stops coming out, wipe down and rough the surface with
250 grit paper. The seals are removed from the outside, do not take
out the carriers without removing the bull gears!! Jim
 

Thanks for the quick reply, Jim. It seemed to me that the left side was a little worse than the right. I was hoping it was just oil on the bands causing the issue. It did cause a bit of a scare when unloading the tractor at the school.
 

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