r/u_Hogchain

I have a 110v window unit AC that had a leak and caused the refrigeration to escape. The leak occurred because of me partially disassembling the unit to clean it. I usually do this every 2 or 3 years and have never had issues. Until this one, anyway. One hundred percent my fault. I own it. But, I’m now attempting to repair it. I purchased a manifold kit and a vacuum pump from harbor freight as well as all the things I will need to solder the copper line back as it should be, however, this has me with questions that I can’t answer alone.

1. I have the area marked where the leak was but not the exact spot. It’s not overwhelming obvious to me where the leak is now. How do I find the EXACT spot causing the issue.
2. is the manifold and vacuum pump connected correctly, I certainly hope that’s how the pump works anyway. I’m attempting to use the pump to pull a vacuum on the compressor lines (now or after I repair the break).
3. is this the correct way to be attempting this? Will the pump pull a vacuum on the compressor lines and allow me to know if it will hold the vacuum pressure before I add the correct amount of R410A to gain use of the unit again?
   If I am going about this incorrectly, please guide me on how it should be done correctly.