Replacing Limit Switch | Monport C02 

On the wire channels you can push the cover to one side to release the other side then open the released side and remove the cover.

How do you know if the switch is bad? I bought 2 new ones (my dime after no response from Tech Support) for my 60W as well and have the machine tore apart as I type. Both of my switches light up. are in the exact same position as yours but 1) at startup, the head goes to home and starts jackhammering trying to go past the limit switches. Also, both of my switches get hit by something and lean over no matter how low I take them. If you get a Monport, prepare to be inside of it regularly.