How to Pull a Vacuum on an AC System - Step by Step

Описание: how to pull a vacuum on a R134a ac system, how to put a vacuum on an ac system, why would you put a vacuum on an a/c system, is it necessary to pull a vacuum on an a/c system, how does an a/c system work, automotive a/c system repair, how to evacuate and pull a vacuum on an ac system, R134a, r12, refrigerant, a/c compressor, a/c condenser, Receiver Drier, expansion valve, orifice tube, evaporator, Automotive air conditioning.

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