Rider you say in your vid that you think the grease is causing the issue with the brake ! Grease on the brake in my opinion will not cause it to fail or hurt anything in my mind other than add a bit more weight to the brake its self ! In my mind the weight of the babcock brake is what kills it ! In my opinion if you have an engine that tends to vibrate or the reaction springs in the clutch are weak, everything shakes and tends to break the tabs off Its like little fly wheel on the clutch shaft rattling back and forth when the shaft is turning!
I have not used a babcock brake in years because I saw what you have there to many times! We switched to the eaton two pc ! Its lighter and doesn't rattle around as bad ! This being said!! The adjustment on the brake is fussy You need it adjusted Right on the floor hardly any squeeze or it can be broken as well and Yup I grease em when I install them For One Reason! Believe it or not ! there Are Drivers out there That Don't have a Clue What The Clutch brake is for! So I apply grease gives the brake a fighting chance at life even if the driver is clueless!.Un like yourself your operating your own stuff Fleet guys don't often give a rats ass ! not interested in why shit fails ! just slam the door and go home at the end of the trip! Us shop guys will fix it keeps us employed ! All this being said Most all manufacturers are fixing this !
They are avoiding the situation By PUSHING automation ! Fix stupid by creating more stupid ! Pretty soon there will be no more clutch brakes to worry about! the tranys and clutches are not cheaply repairable these days! If you need replace a clutch on A New Ishift/ Mdrive They are nudging $10,000 bucks across the counter pricing here in Canada! Everything inside the clutch housing needs to be replaced to avoid future issues!
You are pretty much stuck with the DEALERS!
Manul will soon be dead