In this video, I demonstrate how I pulled a vacuum using the Harbor Freight vacuum pump and manifold gauge set. Then, I show you how to confirm that your system is actually holding vacuum since it is common for the manifold gauge set to leak, causing confusion over where or what is leaking. This video is relevant to R134a conversions so you will have to have R134a adapters on your hoses, or they should be replaced with modern barrier hoses that have the correct fittings on them.
I think this will be the first video in a 2-part series. The second video I am going to show how to pressure test with nitrogen using the same equipment.
Tools:
Harbor Freight Vacuum Pump: https://www.harborfreight.com/25-cfm...ump-61245.html
Harbor Freight Manifold gauge set R134a: https://www.harborfreight.com/r134a-...set-58776.html