Hello, the TRANTER SWITCH HZ8B-20/3/4/D voltage switch or selector of my welding machine was locked, I decided to disassemble it to see if it had been damaged internally, but everything was in perfect condition, then when I tried to arm it I was confused about internal parts that actuate the contacts, so I don't know which contacts come in and which ones come out when I select the voltage 110 V or 220 V, so I would like someone who has the electrical diagram or continuity between the contacts or terminals of the switch or if someone will have the cam positioning inside this switch, Send it to me, thank you very much. 
