we do a fair amount of line boring and bearing repair on off the road
equipment at work and usually the cause of the failed , galled wore out
bearing / bushing is the grease lines have become completely plugged
along their entire length , a real hard thing to do in some spots ...


well i made our guys a couple of adapters to allow them to hook up the
10000 psi power unit to purge through the grease line , don't recommend
doing it with the bearing/ pins / bushings in place but boy does it ever
clean out a passageway