If the needle on the dispenser reads below the minimum acceptable pressure, begin filling the system. Set yours to the appropriate position now. Some gauges have an adjustable "V' on them to highlight the acceptable pressure range. It is okay to touch the low pressure side hoses, they should be around ambient temperature.ĭetermine the correct pressure to fill to.Ĭonsult the table provided with your dispenser to determine the minimum and maximum acceptable pressure readings for the current outside air temperature. The high pressure side (small) hoses get very hot, do not touch them.
Almost everything in the engine bay moves and/or gets hot. DANGER! Do not touch anything you are unfamiliar with. The photos depict the location of the fill port on two different late model engines. Follow the larger hose to find the low pressure side fill port. Protruding from the firewall should be two pipes or hoses next to one another, one larger than the other.
Look to the back of the engine bay called the firewall. It will often be a small section of metal pipe that has two lengths of rubber hose coming off either end. Where is the fill port?įor most vehicles, the low pressure side fill port is located on the left side of the engine bay. This will have a small plastic lid with an L printed on the top.
Locate the refrigerant fill port on the low pressure side of the system. The fan directs air over the evaporator, then out the air vents in your car.īecause the working fluid gets both very hot and very cold, it is important to keep moisture out of the system, as ice forming in the compressor can damage it.Īs always, neither Instructables nor myself are responsible for any damage you may cause to yourself, your vehicle, or others.ġ. After the condenser, liquid refrigerant travels to the evaporator, located inside the passenger compartment, where it is allowed to expand, removing heat and cooling the evaporator. The compressor takes low pressure, gaseous, r-134a, compresses it (which creates heat), then sends it to the condenser, where the heat is dissipated to the outside. The system is sealed from the outside, and filled with a working fluid, in this case r-134a. The compressor is situated between them on one side of the loop. The condenser and evaporator are, more or less, two radiators connected in a loop. A condenser, a compressor, and an evaporator. How Air Conditioners Work:Īn air conditioner has three main parts.
REPLACE CAR AIR CONDITIONER COMPRESSOR HOW TO
This guide will contain information on how to recharge your air conditioner with refrigerant 134a or r-134a. When finished, your air conditioner should make icy cold air, and the whole process should only set you back about 25-35 dollars and 15 minutes of your time. This is one of the most quick and easy tasks to perform when maintaining a vehicle, but holds the potential to cause problems with the air conditioning system if done incorrectly, so read each step very carefully before proceeding. Recharging your air conditioner yourself is inexpensive and can be completed in just a few minutes. The solution is simple - put more back in. Over time, tiny amounts of refrigerant leak from the lines, degrading A/C performance. Is the air coming from the vents in your car just not as cold as it used to be? You've likely run low on refrigerant in your A/C system.
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