Attention! The air conditioning system is under pressure. Do not disconnect the system piping until it is discharged. The refrigerant must be properly removed and sent for regeneration to a service station or a specialized station that has the appropriate equipment. Protect your eyes when disconnecting refrigerant lines.
Note. The expansion nozzle is installed on all Probe models and on Mazda models since 1998.
Removing
1. Discharge the air conditioning system (to do this, contact a specialized station). Disconnect the negative cable from the battery.
Caution: If your car's audio system is equipped with an anti-theft protection, make sure you know the unlock code before disconnecting the battery.
2. On models with a 4-cylinder engine, unscrew the power steering pump mounting bolts and move it to the side to access the air conditioning piping. Disconnect the pipeline from the condenser to the evaporator (pic. 20.2).
3. Expansion nozzle (diffuser) - this is a tube of constant diameter with mesh filters at the ends (pic. 20.3). After disconnecting the pipeline, you will see one end of this tube inside the pipe leading to the evaporator. Using pliers, carefully remove the nozzle, remembering which side it is installed inward.
4. The expansion nozzle separates the high and low pressure liquid refrigerant cavities. The nozzle can be installed for further use under the following conditions.
- A) The nets on both sides of the hen are not clogged.
- 6) The grids do not have gaps.
- V) The plastic body of the nozzle is not damaged.
- G) The hole in the brass insert inside the plastic body of the nozzle is not clogged.
Installation
5. Install the nozzle in the reverse order of removal. Insert the nozzle with the short end towards the evaporator.
Note. Always replace the O-ring when installing the nozzle.
6. Tighten the connection, then take the system to a specialized station for charging and checking.