Page 1 of 1

Why will this bolt not come out?

Posted: Tue Aug 13, 2019 1:54 am
by richardstephens
really need to replace my worn out idler/clamp part on the hot end however I cannot seem to remove the screw/bolt it pivots on. I can see the other end of the bolt turning however it only comes out a few mm then just turns freely. I have put an excessive amount of force on it to no avail. I am almost wondering if there is a hidden captured nut that is on the end of the bolt keeping it from pulling through?

Re: Why will this bolt not come out?

Posted: Tue Aug 13, 2019 1:41 pm
by mwester
If this is the original extruder (i.e. not the aerostruder), then yes, the idler assembly pivots on a long screw that has a captive nut. You can't reach that nut, and once it starts spinning in the hole, it'll never loosen. The good news is that you're going to replace that idler assembly, right? If so, then use a diagonal cutter to carefully cut the idler (NOT the body of the extruder) to break out the hole that screw sits in -- that's the only way I've found to get it all loose.

By the way, replace it with the beefy idler and latch -- so when you print your new idler assembly, make sure that's the one you have. If your original one isn't also the "beefy" version, you'll also need a new latch.