tool changer - missing 3x9 screw and mystery pin - Hardware, firmware and software help

RE: tool changer - missing 3x9 screw and mystery pin

RD — Sun, 07 Sep 2025 12:55:45 +0000

Hi - Someone answered this question on Reddit:

https://www.reddit.com/r/prusa3d/comments/1naiucs/comment/ncvnfds/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

"I have done the same, and found the pin goes between the metal plate that bolts and the rail slider. There is a recess that it goes into and it's sort of wedged in place. I have no idea what purpose it serves"

RE: tool changer - missing 3x9 screw and mystery pin

RD — Sat, 06 Sep 2025 02:50:38 +0000

I meant to say missing SPRING, not screw.

tool changer - missing 3x9 screw and mystery pin

RD — Fri, 05 Sep 2025 22:22:27 +0000

Hi I took apart the tool changer, belt clamp, and hot end, and in the process noted that I was always missing a screw for the tool changer locks. Also, I have an extra little pin or dowel, it fell out when I was disassembling everything in the picture. (I messed up the Dwarf board but that's another post)

What is this pin or dowel and where does it go?

I ordered a pack of Prusa 3x9 screws from partsbuilt.com, but in the meantime, is it a big deal that one is missing?