The purpose of the punch pin/pressure pin, is to keep the microswitch in its place. Removing the punch pins may be hard for new BKO or Bushmaster users. If incorrect techniques are used, the punch pin remover and even the microswitch can be damaged while reinstalling the wiring harness.
The tools needed:
-roll of tape
-1/16" punch pin remover (the punch pin remover in the pictures is a broken one, the pictures and steps that i will show will teach you how to remove the pins even with a broken punch pin remover. if you use a new one, some steps can be skipped)
-your trigger frame with the wiring harness in it
Steps to remove the punch pins:
Get tools and equipment ready.
Place trigger frame on top of the roll of tape. Make sure the other side of the punch pins/pressure pins face the floor or table or where ever you are working on.
Put the punch pin remover on top of the punch pin like so.
Now holding the middle part of the punch pin remover (Make sure the punch pin remover is NOT on an angle
) useing your hammer and strike the punch pin remover. If the pin does not move, strike harder. Once you strike the punch pin remover in as much as it can, it will look like this.
If you use a brand new punch pin remover, it will take the whole pin out. **WARNING: You can damage the punch pin remover if the proper technique is not used**
If you did not damage your punch pin remover, remove the other pin. Once you remove the other pin, you are done.
Now take the punch pin remover out and put a piece of nail/rod/pin in the same hole that the punch pin was in. Using the hammer strike the pin, if it does not move, strike harder. You may need to hold the pin straight so it does not bend when you strike it, so please watch your fingers if you do this.
Now repeat Step 4 and 5 to remove the other pin.
Picture of the wiring harness out of the trigger frame.
Steps to install the punch pin and harness:
Take your microswitch that is on the wiring harness and position it in the trigger frame so that the punch pins can go into the trigger frame.
WARNING: If the holes do not line up correctly in this process you can destroy your microswitch.
My little trick is to put either a nail/rod/pin or even a toothpick in it to keep the microswitch in place. Once you have something to hold the microswitch in place, put the trigger frame on top of the roll of tape.
While the microswitch is held in place by something, get the punch pin and hammer ready. Take one punch pin and strike it into the trigger frame, when it reaches 1/2-3/4 of the way you can stop. Now take the other pin and hammer it into the frame.
Once both pins are 1/2-3/4 of the way in hammer both pins at the same time. Now both pins should be flush with the trigger frame and should look and perform the same way before you took the pins out.