Expansion Valve: Service and Repair

Expansion Valve

Special tools, testers and auxiliary items required

• A/C service station (VAS 6007A)

• Refrigerant must be extracted before hand using e.g. A/C service station (VAS 6007A).

• The previously used service stations can still be used => catalog V.A.G tools.

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

Function

• The expansion valve atomizes the streaming refrigerant and controls the flow quantity so that the vapor is gaseous only at the evaporator outlet, depending on the heat transmission.

Only for vehicles with shielding plate in front of expansion valve

- Remove the nut - 1 - (4.5 Nm) and the screw - 4 - (2.5 Nm).





- Loosen the clip - 2 - and remove the shielding plate - 3 -.

All vehicles





1 Screws

• 10 ± 1 Nm

• Quantity: 2

2 Refrigerant lines on expansion valve

3 O-ring

• 13.7 mm; 2.5 mm

4 Expansion Valve

• Removing

- Extract refrigerant e.g. using A/C service station (VAS 6007A).

- Remove screws - 1 - and disconnect refrigerant lines - 2 - from expansion valve.

- Remove the bolts - 8 - and remove the expansion valve.

5 O-ring

• 14 mm; 1.82 mm

• Coat with refrigerant oil when installing

6 O-ring

• 10.8 mm; 1.82 mm

• Coat with refrigerant oil when installing

7 O-ring

• 9.5 mm; 2.5 mm

8 Cylindrical combination bolt

• 5 Nm