Polaris booster pump with keyed motor?

[svenpup]

Another pump motor question...

I have a booster pump that appears to be a Polaris (PB4-60 maybe?).

The motor is labeled AO Smith SK1072 which is Nema-C flange 56C keyed.

Everywhere that I have seen replacement parts for polaris booster pumps calls out for threaded (not keyed) and specifically the B625 which is a 56CZ frame.

Is it possible that I have an older model?

 

[Pacifica]

All you need is a c-framed keyed shaft motor. You can purchase the type of motor at any pool retail spot. Just remember to specify the correct horsepower when you buy it.

 

[Bama Rambler]

It is possible that you have an older model. I, like you, could only find manuals that referenced the threaded shaft units. The oldest one was dated 6/03 the newest one was 6/06. I didn't find anything newer or older than that.

 

[svenpup]

Bama, do you happen to know if the shaft seal and gaskets were the same on the keyed shaft version?

 

[Bama Rambler]

The SK1072 has a 5/8" shaft and so far I can't find the dimensions for the B625 but it being a 56C frame means that it has a 5/8" shaft also. I'd say the seal & gaskets should fit but that's just a educated guess.