With the proper tool the orginal pulleys come off without any damage.
Reinstalling the pulley is not difficult but requires removing the end shield and using a press.
Two types of pullers shown post
11 & 8
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Another type made by Dave in
post 10
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Snap-on version posts
12 and 14
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Installation without a pressure gage on the press discussed in post 2
Alternator repair, a little show and tell.
