Make sure the bolt is very tight (30-40 ft lbs) before you whack it straight on the end, then retighten it before you hit it again. Getting it tight enough may be difficult to do if all you have to hold onto is the hub.
Grease the bolt threads to minimize the chance of pickup, and grease the end of the bolt or the mainshaft to help it turn easier.
If all else fails and you’re frustrated enough you don’t care about risking stripping the bolt in the puller, you can use an impact to tighten it, until it comes off, or strips the threads. At least that’s what I did on one really stuck clutch—I lapped it in a hurry at a race when fixing a broken key and didn’t get the lapping compound all off, and it galled on the taper and wouldn’t come off easily.
Last edited by linker48x; 05/07/21 1:57 am.