A/c failure...of sorts

[Chamberpains]

What do you need an "a/c machine" for? You said you already have the gauges and the vacuum pump... That's all you need. The machines just have the recovery system in them for pulling freon from an already charged system. Im assuming the big oil spot on the condenser took care of the freon in the system for you. So pull your system apart and flush it out, replace everything you need to replace, pull a 30 min vacuum, let it sit for 30 min after vacuum to see it holds the vacuum then charge the system thru your gauges using cheap cans of freon from Walmart or a tank and scale if you have access.