A small torch will work. I use a soldering iron. I wet solder onto the tip and apply to the shaft of the cog wheel; the solder aids heat transfer. The heat softens the old, dried Garrard grease. Using the technique described by 11ccs above, I hold the gear with a shop rag or wadded-up paper towel...though it doesn't get THAT hot usually...and wiggle it back and forth. Do not force it as the shaft could work loose from the chassis if you do. Once removed, the dried up grease residue needs to be cleaned completely off the shaft and the hole in the wheel, using solvent (I use acetone, Methyl Ethyl Ketone or lacquer thinner; alcohol is too slow!) If there is a black antifriction coating in the track on the bottom of the cam wheel, leave it alone, don't wash it off. Once you have the trip levers off and cleaned up (they will probably have the same dried-up yellow grease on them), leave the trip levers dry, no lubricant. Check to see that some careless worker at Swindon did not get grease on the sliding stud in the Delrin insert, under the cam wheel; it should run DRY, too. Units with no Delrin insert (Autoslim, AT5 and AT6) have just a slot in the steel chassis; Garrard said they could be lubricated with a thin film of grease but not too much; however, I prefer to run it dry, too. Either way, clean off any old grease that you find. Put a film of grease on the shaft and inside the hole of the cam wheel before reinstallation.