82 crankshaft sprocket removal

[lam]

I am trying to change the oil seal at the front crankshaft and
have gotten the 19mm bolt in the center off.

The pulley (or sprocket) is locked in by some "loctite"?? and won't slide out.
What is the best way to take it out? some puller? or just apply some heat??
Don't want to damage anything by force.

When I put the sprocket back on, do I need to reapply loctite to it?

Is the center big bolt a stretched bolt? can the original one be reused?

thanks

[lam]

the car is a 82 Scirocco

[sciroccohal]

Heat is okay judiciously applied. You're replacing the seal anyway. Gentle prying with TWO levers also works...180° from each other.
Do not bend up the pulleys or edges.

I have reused the bolts to the correct torque spec and use red loctite.

Jamming a prybar into the tranny hole to lock the crankshaft will get you a correct torque.

[polov8]

I had an absolute bitch of a time getting the pulley off my 1.6 motor, it's located with a woodruff key, and normally pulls off quite easily, but add a bit of water, a touch of road salt, and simmer for 33 years and there was no way it was going to slide off.

in the end I put 2 long M8 bolts in opposing holes on the pulley, with a thick piece of steel between them, and wound the centre bolt into the back of the steel, pulling it off the crank. then cleaned up the nose of the crank, and the woodruff key, and got a new pulley. Febi-bilstein do the replacement, as the original is NLA

[lam]

turns out I have to use this puller..
There is just enough room to put the puller on the sprocket.

[polov8]

I have one of those, but I couldn't get it behind the lip of the pulley.