Attention! Do not attempt to disconnect the air conditioning circuit yourself. Observe the precautions indicated in paragraph 11.
Evaporator
Withdrawal
1. Transfer the car to a specialized service station to unload the refrigerant.
2. Remove the heater core as described in paragraph 10.
3. Remove the steering column (see chapter 10).
4. At the rear of the engine compartment, remove the inlet air duct of the ventilation and heating system as follows.
- A) Turn 90°counterclockwise the three retainers of the cabin air filter cover and remove the cover. Pull out the cabin filter.
- b) Unfasten the latches of the wiring box and remove the wiring from the box (see fig. 10.12, a)
- V) Remove the four screws securing the cabin filter housing and pull the housing out.
- G) Remove two screws (see fig. 10.12, b) and pull the air duct up out of the engine compartment.
- d) If necessary, pull up the rubber seal in the left rear corner of the engine compartment, release the two latches and pull out the separation panel.
5. Disconnect all wires from the cross member of the front panel Turn out the appropriate bolts and remove the cross member.
6. Disconnect the A/C pipes at the engine bulkhead. The o-rings of the connections can be discarded - new ones will be required during assembly.
7. Turn away bolts of fastening of a heater to a motor partition (pic. 12.7, a, b).
8. Remove fan speed limiter (see below in this paragraph).
9. Disconnect the electrical wiring from the temperature sensor and remove the sensor from the evaporator (pic. 12.9).
10. Disconnect the drive from the servomotor, disconnect all electrical connectors and release all wires from the fasteners.
11. Unclip the underside of the evaporator and remove the evaporator.
Note. Do not damage the evaporator plates. Straighten bent plates if necessary.
12. Installation of the evaporator is carried out in reverse order. Charge the system with refrigerant to service stations. Fill the cooling system.
Expansion valve
13. Transfer the car to a specialized service station to unload the refrigerant.
14. At the rear of the engine compartment, remove the inlet air duct of the ventilation and heating system as follows.
- A) Rotate 90°counterclockwise the three retainers of the cabin air filter cover and remove the cover. Pull out the cabin filter.
- b) Release the latches on the wiring box and remove the wiring from the box (see fig. 10.12.а).
- V) Remove the four screws securing the cabin filter housing and pull the housing out.
- G) Pull up the rubber seal in the left rear corner of the engine compartment, release the two latches, and slide the divider panel slightly forward.
- d) Remove two screws (see fig. 10.12.6) and pull the air duct up out of the engine compartment.
15. Turn out two screws and remove the forcing and returnable pipelines of central air from a motor partition. O-rings can be discarded - new ones will be required during assembly
16. Raise the axle arm and remove the air recirculation damper (see fig. 10.59).
17. Remove the bolt securing the two pipes of the air conditioning system to the engine bulkhead and move the pipes to the side (see fig. 10.50).
18. Turn out two screws and remove the broad valve. O-rings can be discarded - new ones will be required during assembly.
19. Install the valve in reverse order. Charge the system with refrigerant to service stations. Add fluid to the cooling system to the correct level.
Receiver with dryer
20. The receiver needs to be replaced in the following cases.
- A) There is dirt in the air conditioning system.
- 6) When replacing the compressor.
- V) When replacing the condenser or evaporator.
- G) The refrigerant has leaked out of the system due to a leak.
- d) The air conditioning system remained open for more than 24 hours.
21. Transfer the car to a specialized service station to unload the refrigerant.
22. The receiver is located in the right corner of the engine compartment. Loosen the screws and remove the tubes and connections from the top side of the receiver (pic. 12.22). O-rings can be discarded - new ones are required for assembly.
Note. If the dryer will accumulate open for more than an hour, plug its hole with a plug.
23. Take off the poker of the right front fender (see paragraph 23 of chapter 11).
24. Unscrew the clamping screws and pull the receiver out of the clamp (pic. 12.24).
Compressor
25. Transfer the car to a specialized service station to unload the refrigerant.
26. Tighten the parking brake, raise the front of the car and place it on reliable stands. Remove the mudguard from under the engine.
27. Remove the accessory drive belt.
28. On a model with a 4-cylinder N42 engine, remove the air cleaner (see chapter 4A).
29. On a model with a 6-cylinder engine, release the washer can and move it to the side.
30. On all models, disconnect the compressor electrical connector (pic. 12.30).
31. Disconnect the tubing from the compressor (fig 12.31) O-rings can be discarded - new ones are required for assembly.
32. From under the car turn off three bolts of fastening of the compressor and remove it from the car.
33. Installation of the compressor is carried out in the reverse order, taking into account the following notes.
- A) Before installing the compressor, fill it with the required amount of special oil for cooling systems.
- b) When connecting the air conditioning pipes, always replace the O-rings.
- V) Charge the system with refrigerant to service stations.
Pressure meter
34. The pressure sensor is installed on top of the receiver Take the car to a specialized service station to unload the refrigerant.
35. Disconnect the electrical plug from the sensor and unscrew the sensor.
36. Install the sensor in sequence. reverse withdrawal. Tighten it securely. Charge the system with refrigerant to service stations.
Condenser
37. Transfer the car to a specialized service station to unload the refrigerant.
38. The condenser is located in front of the radiator of the cooling system. Remove the radiator. as stated in paragraph 3.
39. Disconnect the refrigerant pipes from the condenser (pic. 12.39). O-rings can be discarded - new ones are needed for assembly.
40. Remove the two plastic screws holding the condenser through the cross panel. Lift the condenser and remove it from the support bracket (pic. 12.40, a, b).
41. Installation of the condenser is carried out in reverse order, taking into account the following points.
- A) Drink the correct amount of A/C oil before installing the condenser.
- b) Replace all sealing rings in the joints.
- V) Charge the system with refrigerant to service stations.
Fan speed limiter
42. Disconnect the right air duct to the passenger's feet from the mixing chamber.
43. Carefully remove the crank from the servo shaft. Remove two screws (one above and one below) and remove the bracket and servomotor (pic. 12.43).
44. Disconnect the electrical connector from the limiter, unscrew the two fastening screws and remove the limiter (pic. 12.44).
45. Installation is carried out in reverse order.