Super M-TA brakes glaze question

Rebuilding brakes on M-TA has anyone ever taken the whole assembly to machine shop to have surfaces redone?
Just wondering cause if I can I will, only want to do this once. I want to do it right and if it last another 61 years that will be fine.
 
Yes. if the material on the disks is nearly as good as new (ask for the thickness of the new disks, I do not know off hand) the total clearance should be .040 to .060", measured by putting the components into the housing in order, and measuring across the housing down to the first disk. A non-directional sanding with 200 grit paper will break the glaze. clean the ramps and balls. dry PTFE (Like Try-Flow) can be used there (just a little) on the balls and ramps. The housing needs to be machined at the surface where it mates with the tractor to reduce clearance. Jim
 
I recently rebuilt the brakes on my F300.
I soda blasted all my parts once I had them off & cleaned up, taped off the ball & ramp areas first, when done soda blasting I cleaned the ramp areas up by hand with a wire wheel & emery cloth, you don't want to remove hardly any metal in these areas.
I then took all this to a friend that has a mill & lathe, first he milled the inside of the brake surfaces inside the brake housings, took off around .005 to clean them up & get them perfectly flat, he then milled around .008 off of each actuator to get them flat, put a finish cut on each one similar to an auto brake rotor. Smooth but not shiny. I bought new brake discs, balls & springs. We assembled each stack inside the brake housing and he then machined the mounting surface of the brake housing to give .045 clearance.
The brake surfaces on the bull pinion retainers were checked with a straightedge and were not worthy of having machined so I just knocked the glaze off of those with a 120 grit scotch brite rotary pad in my air drill, go easy, you just want to knock the glaze off. I replaced the orings & oil seals while I had them off.
I have more than enough stopping power now, they release like they should, and no "locking up" the wheel when the brakes are barely applied.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top