Gave up thoughts of refurbing alternator: at 150,000 miles thought replacement was sensible rather than new brushes/regulator, so bought a recon at local spares place.
They didn't have an identical unit, so fitted a Ford one which looks almost identical (clearance hole instead of tapped for the adjustment bolt otherwise the same), BUT the pulley is larger, about 1/3 bigger diameter than the original. I tried and couldn't undo the nuts to swap them over, so fitted it anyway.
Seems to be fine, but was this sensible? I'm assuming the alternator RPM will be about 1/3 slower, but shouldn't matter much above tickover as the regulator'll just be working less hard.
What does the team think?
Regards,
Simonm.