System Overview - Refrigerant Circuit, Evaporator System 2

NOTE:

Under certain conditions, the desiccant bag/dryer cartridge no longer needs to be replaced each time the refrigerant circuit is opened on A/C systems with refrigerant R1234yf. Refer to REFRIGERANT CIRCUIT .

Under certain conditions, the dryer bag no longer needs to be replaced each time the refrigerant circuit is opened on A/C systems with refrigerant R134a. Refer to WORKING ON REFRIGERANT CIRCUIT .

Fig 1: Identifying Refrigerant Recycling/Recovery Unit Kent-Moore ACR4 Components

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Refrigerant Line
- High pressure side
- Below rear left wheel housing liner
O-ring
- Always replace
- 9.5 mm; 2.5 mm
O-ring
- Always replace
- 13.7 mm; 2.5 mm
Cylindrical Combi-Screw M8x28
- 12 Nm ± 1 Nm
- Quantity: 2
Refrigerant Line
- Low pressure side
- Below rear left wheel housing liner
Cylindrical Combi-Screw M6x35
- 3.5 Nm ± 0.5 Nm
Cylindrical Combi-Screw M6x35
- 3.5 Nm ± 0.5 Nm
Cylindrical Combi-Screw M6x70
- 3.5 Nm ± 0.5 Nm
Cylindrical Combi-Screw M6x70
- 3.5 Nm ± 0.5 Nm
O-ring
- Always replace
- 13.7 mm; 2.5 mm
O-ring
- Always replace
- 9.5 mm; 2.5 mm
Refrigerant Line
- Low pressure side
- On the underbody
Refrigerant Line
- High pressure side
- On the underbody
Screw M6 x16
- 8 Nm ± 1.2 Nm
Auxiliary Component Bracket
Screw M6x16
- 8 Nm ± 1.2 Nm
Spacer
Cylindrical Combi-Screw M6x35
- 3.5 Nm ± 0.5 Nm
Cylindrical Combi-Screw M6x35
- 3.5 Nm ± 0.5 Nm
Damper
O-ring
- Always replace
- 9.5 mm; 2.5 mm
Cylindrical Combi-Screw M8x28
- 12 Nm ± 1 Nm
Refrigerant Line
- High pressure side
- Under front left wheel housing liner
O-ring
- Always replace
- 13.7 mm; 2.5 mm
Cylindrical Combi-Screw M8x28
- 12 Nm ± 1 Nm
Refrigerant Line
- Low pressure side
- Under front left wheel housing liner