I have searched and read several threads on the topic but wanted to see if there are any better or newer techniques in 2022.
I am installing the Savage1 TKPs. Pretty straight forward but I need bring the pulley out 2-3mm for belt alignment.
The pulley is a 10mm D, As a usual, the grub screw is not coming out even after heated with soldering iron. I was thinking about drilling out the grub screw and using a battery terminal puller.
I am sure lots of people have had this problem. Thanks in advance!
If it is stuck because of loctite (especially green/2701) then you could simply continue heating it with the soldering iron and let the heat soak the screw for a little bit which would melt the loctite.
If all else fails or it’s rounded, you need to drill it out.
If it’s just overtightened, heat it good, let the heat soak through it and cool it down repeatedly and try to unscrew it while warm.
Personally I do not use grub screws on pulleys for this very reason. Blue or red threadlocker and a key is enough I find.
But if there is indeed a grub screw remaining, then heat up the pulley real good to make sure the threadlocker has melted, and then hex key + help with some pliers for additional torque should do it usually.
Worst case you need to drill through it with a drill and completely destroy the screw.
That’s why a soldering iron does not work. The hottest mine gets to is around 465.
Ok butane torch it is. I will wrap everything I don’t want to torch with aluminum foil to be safe. This will make for a fun memorial weekend project.
For future reference, if you ever must drill a grub screw out, use the tap drill size, or slightly there under.
If it is an m3 use 2.5mm drill
m4 .3.3mm drill
m5 4.2mm drill
m6 5.0mm drill
