Yes, the heat from the engine will actually help remove a little more of the moisture from the system................
About 30 minutes
15 minutes
I wouldn't do it. the right way is to hook the vehicle up to an ac charging machine, and vacuum the system.
Depending on the year of the 302 and the vehicle, vacuum lines run all over the engine compartment, and under the dash. With a vacuum leak the engine could idle high or run rough, or the heat and ac controls may not operate properly.
run motor and set A/C on max, blower on full, pull a vacuum on the system and recharge with R12a 2.9Lbs
Moisture in a vehicles AC system can react with the R134a or R12 refrigerant and create an acid that will eventually eat through seals and o-rings and even orifice tube parts. It is recommended you vacuum your system whenever it loses charge or whenever your extremely low on refrigerant. You can rent a vacuum at Auto Zone for free (200$ refundable deposit) and pull a 26-28 inch vacuum.
Which vacuum diagram The Underhood for the engine or the vacuum for the interior /AC system?
The vacuum that operates the doors for an ac system is created from the vehicles engine. Check under the hood for vacuum lines that have cracked or have become disconnected to start.
Dependin on the vehicle you may be able to get the serpentine belt for the same vehicle that does not have the option of having AC
If the system is being completely filled, a vacuum will have to be pulled on the system. If the system just needs to be topped off then a vacuum pull is not needed.
need vacuum hose diagram fast idle ac
You will not be able to charge the system correctly plus you will have moisture stuck in the system.....