We remove the elements of the air conditioning system for replacement or repair
Condenser replacement
We install the car on a lift or a viewing ditch
Disconnect the negative battery terminal
Remove the refrigerant from the air conditioning system
Unscrew the bolt securing the flange of the high-pressure supply pipeline to the condenser flange
And disconnect the tube from the condenser
In the same way, we disconnect the flange of the outlet pipeline
After disconnecting the tube, we muffle it with suitable plugs so that dirt does not get in
Remove the cooling system radiator from the engine together with the condenser, as described in the article "How to replace the Mazda 6 engine cooling radiator"
We unscrew the four bolts securing the condenser supports to the radiator tanks
And remove the condenser with the receiver assembly
If necessary, remove the receiver from the condenser
When installing the condenser, we replace and lubricate the O-rings with oil for the air conditioning compressor
Filling the air conditioning system in a special workshop
Replacing the dryer receiver
When repairing the air conditioning system, if the system was in a depressurized state (some components, pipelines were removed), the dryer receiver must be replaced.
Without replacing the dryer receiver, after filling the system, the refrigerant will not be dried and acids may form inside the system, which will destroy the parts of the air conditioner from the inside.
The receiver dryer is not repaired and is replaced as an assembly.
Release the refrigerant from the air conditioning system
Remove the radiator of the engine cooling system with the condenser assembly
Unscrew the bolt securing the receiver to the pipeline flange
Unscrew the fastening clamp bolt and remove the receiver
If aluminum or plastic particles are found in the inlet of the receiver, it means that the pump part of the compressor has collapsed.
Replacing only the receiver in this case will not give a positive result. You will need to replace the compressor with flushing the system
We install new sealing rings on the flanges of the receiver tubes and lubricate their compressor oil
Install receiver and condenser in reverse order
When buying a new receiver-drier, you need to make sure that the openings of the case are tightly closed with technological plugs
A receiver dryer that has been stored without plugs is not usable, even if it is brand new
Technological plugs should only be opened immediately before installation
Filling the air conditioning system in a special workshop
Pressure sensor replacement
Release the refrigerant from the air conditioning system
Disconnect the negative battery terminal
We press the latch and disconnect the block of wires from the sensor
Unscrew the sensor from the threaded fitting on the pipeline
When turning the sensor (A) out and in, two wrenches must be used to prevent the threaded pipe (B) from turning or deformation of the sensor body
Install the new sensor in reverse order. Tighten the sensor with a torque of 7 Nm
Before screwing in the sensor, you need to replace the O-ring and lubricate it with oil for the air conditioning compressor
Filling the air conditioning system in a special workshop