15 years ago
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. maybe
3 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
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?