Statomatic 4.5kva pulley/flywheel removal.

[Lewisparko]

Hi all,

I'd like to remove the pully/flywheel from my 4.5kva startomatic alternator (to attempt to straighten the shaft). Having trouble ID'in the threads for the jacking bolts. Roughly 12mm diameter and a very coarse thread. Also can't see any other retaining devices other than the set screw above the keyway that I have already removed. Is it now just a case of jacking the pully off with the jacking bolts? Ny idea if it is an interference fit on the shaft?

Cheers,

[broncodriver99]

Have you tried Whitworth? The CS engine was built with Whitworth fastners, I would assume the alternator would be as well. I don't know if maybe in later years the generator could have been Imperial/SAE. Definitely not metric though.

[sirpedrosa]

Gentles,

All threads in CS are BSW.

Cheers
VP

[AdeV]

1/2" BSW if I remember correctly; unfortunately, that's the one thread size where you won't be able to jam a UNC screw in, as 1/2" BSW is 12TPI vs UNCs 13TPI.