Refrigerant Circuit Components Overview

Special tools and workshop equipment required

Torque Wrench V.A.G 1331/ (5 to 50 Nm)
Drip Tray For Shop Crane VAS 6208
Hose Clamps Up To Diameter 40 mm3093
Robinair A/C Service Unit ROB 134APF with Rinsing Device For Refrigerant Circuits VAS6337/1A

NOTE:

Refrigerant must be extracted before hand using Robinair A/C Service Unit ROB 134APF.

The previously used service stations can still be used. Refer to V.A.G workshop equipment.

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.

Under certain conditions, fluid reservoir with dryer is no longer to be replaced after each time the refrigerant circuit is opened. Refer to Removal and Installation .

Information for repairing vehicles with air conditioning and working with refrigerant can be found in General Information .

WARNING:

There is a danger of ice-up.

Refrigerant leaks out if refrigerant circuit is not discharged.

Refrigerant must be extracted before opening the refrigerant circuit. If refrigerant circuit is not opened within 10 minutes of extraction, pressure may form in refrigerant circuit due to evaporation. Extract refrigerant once more.

Fig 1: Refrigerant Circuit System Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Fluid Reservoir With Drier
NOTE:
Under certain conditions, fluid reservoir with dryer is no longer to be replaced after each time the refrigerant circuit is opened. Refer to Removal and Installation .
- Removing and installing, refer to FLUID RESERVOIR WITH DRYER .
A/C Compressor
- Denso manufacturer identification: 7SEU17C.
- Pay attention to notes for installing A/C compressor. Refer to A/C COMPRESSOR, INSTALLATION INFORMATION
- Removing and installing, refer to A/C COMPRESSOR .
Condenser
- Removing and installing, refer to CONDENSER .
High Pressure Sensor -G65-
Removing and installing, refer to HIGH PRESSURE SENSOR -G65- .
Nuts
- 6 Nm
Bracket
- Nuts (6 Nm)
Evacuating and Charging Valve
- High pressure side.
- Environmentally hazardous draining of refrigerant is an offense punishable by law.
- Removing and installing, refer to EVACUATING AND CHARGING VALVE, LOW AND HIGH PRESSURE SIDES .
- Capacities, refer to REFRIGERANT R134A CAPACITIES .
Screw
- 3.5 Nm
Retainer
Evacuating and Charging Valve
- Low pressure side.
- Environmentally hazardous draining of refrigerant is an offense punishable by law.
- Removing and installing, refer to EVACUATING AND CHARGING VALVE, LOW AND HIGH PRESSURE SIDES .
- Capacities, refer to REFRIGERANT R134A CAPACITIES .
Expansion Valve
- Function and removal, refer to EXPANSION VALVE .
Bracket
Hex Head Nut
- 20 Nm
Retainer
Screw
- 3.5 Nm