Contents: Removal ↧ Installation ↧
Removal
Warning: The air conditioning system is under high pressure. Do not loosen the couplings or remove components without first discharging the system when contacting an authorized or specialized service station. When disconnecting the air conditioning system couplings, wear protective glasses or a mask.
Note: If the compressor is replaced, the accumulator/dryer must also be replaced (see subsection 14) and expansion tube (see subsection 18).
1. Discharge the air conditioning system at a service station of the appropriate profile (see warning above).
2. Disconnect the negative battery cable.
3. Clean the compressor areas adjacent to the refrigerant line connections.
4. Remove the drive belt (see chapter 1).
5. Remove the generator (see chapter 5) and the bracket of the intermediate pulley of the drive belt.
6. Disconnect the compressor wiring connector (see illustration).
15.6. Location of compressor mounting bolts: A - connecting nut of the refrigerant circulation line; B - Refrigerant pressure sensor; C - Compressor mounting bolts (the top bolt is shown - the bottom fastener is not visible from this angle); D - Compressor drive clutch connector; E - Bracket of intermediate pulley of drive belt
7. Disconnect the suction and discharge unit from the compressor. Both lines are connected to the compressor by a twin coupling, which is secured with a single bolt. Cap the connectors to prevent clogging and moisture from entering the system. The seals located between the plate and the compressor must be replaced.
8. Unscrew the mounting bolts and remove the compressor.
Installation
9. If replacement is planned, drain the oil from the new compressor into a graduated container to determine the volume that needs to be added to the new compressor. It is necessary to comply with the requirements of the accompanying instructions.
Note: Sometimes the replacement compressor is supplied with oil already filled. Follow the instructions in the accompanying manual regarding draining excess oil before installation.
Caution: The oil added to the system must be compatible with R-134a refrigerant.
10. Installation is carried out in the reverse order of removal. When installing the refrigerant circulation line connector on the compressor, it is necessary to replace and lubricate the seals with compressor oil, then securely tighten the fastening nut.
11. Connect the negative battery cable.
12. Charge the air conditioning system at a specialized station.
[The article was reprinted from the website CHEVYMAN.ru]