Refrigerant Circuit Components Overview

Refrigerant Circuit Components Overview

• Refrigerant must be extracted before hand using, for example, Robinair A/C service unit (ROB 134APF) or subsequent models.

• Environmentally hazardous draining of refrigerant is an offense punishable by law.

• The previously used service stations can still be used. Refer to workshop equipment catalog.

• Safety measures when working on an evacuated refrigerant circuit, refer to => [ Repairing Vehicles Equipped with A/C and Handling Refrigerants ] Repairing Vehicles Equipped with A/C and Handling Refrigerants, notes regarding repair work on vehicles with air conditioning and the handling of refrigerant.

• To prevent the entry of dampness all components of the refrigerant circuit which have been opened must be sealed with suitable plugs.

• The color coding of refrigerant circuit O-rings with R134a has been discontinued. Colored and black O-rings are used.






1 Air Intake Shroud

• Under the right plenum chamber cover.

• Removing and installing, refer to => [ Intake Housing ] Service and Repair.

2 Heating and A/C Unit

• Removing and installing, refer to => [ Heating and A/C Unit ] Removal and Replacement.

• Disassembling and assembling, refer to => [ Heater and A/C Unit, Manual A/C System ] Heater and A/C Unit, Manual A/C System.

3 Expansion Valve

• Removing and installing, refer to => [ Expansion Valve ] Service and Repair.

4 Evaporator

• Removing and installing, refer to => [ Evaporator ] Service and Repair.

5 Low Pressure Refrigerant Line

• With evacuating and charging valve, low pressure side.

6 High Pressure Refrigerant Line

• With evacuating and charging valve, high pressure side.

7 A/C Compressor

• Removing and installing, refer to => [ A/C Compressor ] Service and Repair.

• See notes, refer to => [ A/C Compressor Installation Information ] Description and Operation.

• Various manufacturers. Refer to Electronic Parts Catalog (ETKA).

8 Condenser With Dryer Cartridge

• Overview, refer to => [ Condenser Overview ] Condenser Overview.

• Condenser, removing and installing 2.5L, refer to => [ Condenser ] Condenseror 2.0L , TDI, refer to => [ Condenser ] Condenser.

• Removing and installing dryer cartridge, refer to => [ Dryer Cartridge ] Service and Repair.

9 Dryer Cartridge

• Removing and installing, refer to => [ Dryer Cartridge ] Service and Repair.

10 Connection Location From Refrigerant Line To Condenser

11 Evacuating and Charging Valve, High Pressure Side

• Removing and installing, refer to => [ Evacuating and Charging Valve, Low and High Pressure Side ] Service and Repair.

12 High Pressure Sensor (G65)

• Removing and installing, refer to => [ High Pressure Sensor (G65) ] Service and Repair.

13 Evacuating and Charging Valve, Low Pressure Side

• Removing and installing, refer to => [ Evacuating and Charging Valve, Low and High Pressure Side ] Service and Repair.