the mechanic puts the quick-release fastener in red on the valve from the air conditioning system in the car, filling with the r13

134a air auto automobile car charging compressed compressor condition conditioner conditioning cool coolant cooling coupler device engine equipment fastener filling garage gas hand hose liquefied liquid machine maintenance mechanic motor pipe pressure pump puts quick quickrelease r13 r134a recharge red refill refilling refrigerant refrigeration repair service station system tube valve work workshop