Between 287BC - 212BC by Archimedes.
Pulley - band - was created in 1994.
the pulley was invented in the 1956
In most cases you need a pulley puller. Need to know make, model , year and engine to help you more.
Most bolts turn counterclockwise to come off. Year, make, model and which pulley would be helpful.
Use a strap wrench or chain wrench on the pulley to hold it secure.
There is a crankshaft pulley, alternator pulley, power steering pump pulley, AC pulley, idler pulley, tensioner pulley, etc.
a coumpound pulley is when there is a fixe pulley and movable pulley working together
a coumpound pulley is when there is a fixe pulley and movable pulley working together
pulley
I think you mean "puller" not pulley and give us more info like the year, make, model and engine size to help us answer that one.
Things that might cause a pulley to wobble: The pulley is bent. The shaft the pulley is on is bent. The pulley is mounted crooked.
No, it is not a pulley. A pulley has to half effort.