Water Pump ID and Questions

[Dirtrack49]

Hi all,

While attempting to sort out my new to me 30 Fordor, I noticed what I think sounds like a noisy water pump.

After removing the fan belt, I spun the 2 blade fan and did not here any unusual sounds. However, I did notice that there is approximately 1/4 inch end play in the shaft.

Can anyone please tell me if this is a original type ford water pump and is the collar I see near the fan an adjustment devise?

According to the PO, this is a new pump, and it certainly looks to be so.

Please see attached photos.
Tom L.