Stemco wheel seals

[Chamberpains]

Things taught in diesel mechanics schooling has nothing to do with using your brain. This is not a joke or exaggerated. They are courses on what a manufacturer says are tolerances and maybe a quick gist of why the tolerances are there and failure may happen if "whatever" is within the range. There is no further insight, instructions.... the thing I have screamed since I learned how to hold a wrench.... WHY?!?! Why are these the tolerances? Why is one end of the tolerances better in some circumstances and the other for others.... a whole pile of WHY questions that ALL instructors are completely annoyed at answering and usually get a blank stare and a response of thats the way it is... or because they said so... And this is a good education for diesel repair. Not the everyday tech. They get way worse knowledge than that. Usually an in house, in the breakroom 30 min show and tell by a manufacturer rep. Then right back out on the floor to tear in to, to replace, not to repair.