My confusion with the floating bushing system stems from the fact the bushing can move in its housing..the spindle. This is counter to any standard practice. The bushing is always held tight in its bore, and its ID is the journal.
When the ID is worn, the bushing is replaced. If the OD were a slip fit in its housing, ideally the housing could lose its fit along with the bushing, then you would have to replace whatever piece held the bushing.
In a automotive generator, the two end frames are bored for bushings which are pressed in. When the bushings wear, the are replaced. If they were to be installed with a sliding fit, they could wear this fit, then the end frames would have to be replaced...not to cool!
If the install directions indicate you should align the hole in the bushing with the hole for the Zerk, to me that means they don't intend this position to change. This would mean that the bushing that is slipped into the spindle bore will stay where it is, and the movement will be between the bushing ID and king pin OD.
This makes sense. Having the bushing move or rotate in the spindle bore makes no sense.
I will end my rant and go for coffee now!
Stuart
