Given a power steering pulley that is press fit onto the end of the pump shaft and retained only by the press fit. Given that a power steering pulley would need to be removed for when/if the pump has to be replaced or for other types of repairs. I.e. maybe3 or 4 times during the life of the vehicle.
Can someone expect the same length of service from a aluminum pulley as they might from a factory steel pulley?
The main concern being that a couple cycles of removing and reinstalling an aluminum pulley would lead to excess clearance in the pulley where a similar set of cycles would not cause the same in a steel pulley.
The aluminum pulley would be machined from a block of aluminum. The steel pulley would have a forged center hub with the pulley itself welded onto the forged hub.
Is there any validity to the concern? Are there steps you can take when making the aluminum pulley to reduce or eliminate the effect?