Tyler T --If it's a nut, be sure to clean and debur the part of the male thread sticking out past the end of the nut. Running a die over the exposed male threads will go a long way toward getting the nut over those threads without galling or stripping. I'll assume that you've already checked to be sure that the pulley, nut, and male thread haven't been sealed with a layer or more of paint. Even good penetrating oils like P'Blaster are slowed down significantly by enamel seals. Heating metal makes it expand, so heating a nut will often help loosen it. Try to avoid heating the male thread, 'cause you don't want to expand it and make it even tighter. A fair number of people swear by feeding candle wax into the stud-to-nut juncture while the nut is still hot enough to QUICKLY melt the wax, which will flow by capillary action down the thread spiral into the nut. If it was mine, I'd try getting the nut loose but if it didn't want to come loose under moderate force I'd cut the nut rather than risk hurting any of the other, more expensive, parts. Drilling lengthwise through opposite nut flats is a good way to cut a nut if you don't have good radial access but do have plenty of working room axially. John
| 
