Hi Interesting blast from the past there. I worked in a wreckers. my only involvement with these was they got hauled in when the chunks came out the bottom of the housings. Would the cause of this be guys running up and down the powershift with a tiller buried up to the frame, and full bore throttle?.
I guess you should of been a Massey mechanic, according to the guys on the massey board this kinda stuff don"t happen to 1135 and 55 tractors!. It would of been a pretty easy and boring job working for MF just changing oil /servicing and doing PDI on new equipment L.O.L.