Refrigerant Lines Assembly Overview
Refrigerant Lines Assembly Overview
I - Component group I
• Vehicle front
II - Component group II
• Body, front
III - Component group III
• Body, rear
IV - Component group IV
• Engine compartment
Component Group I - Vehicle Front
1 O-Ring Seals
• Replace.
• Lubricate lightly with refrigerant oil before installing.
2 Refrigerant Line
• Connecting line between condenser 1 (left) and condenser 2 (right).
3 Screws
• Tightening specification 9 Nm.
4 Refrigerant Line
• To the evaporator.
5 Condenser 2
• Right side of vehicle.
• Refrigerant line, disconnecting and reconnecting, refer to => [ Refrigerant Lines, Disconnecting from Condenser and Connecting ] Refrigerant Circuit.
• Removing and installing, refer to => [ Condensers, Left and Right ] Refrigerant Circuit.
6 Screws
• Tightening specification 9 Nm.
7 Bracket
• For the refrigerant line.
8 Refrigerant Line
• To the evaporator.
9 Union Nut
• Tightening specification 15 Nm.
10 O-ring Seal
• Replace.
• Lubricate lightly with refrigerant oil before installing.
11 Restrictor
• Replace.
12 O-ring Seal
• Lubricate lightly with refrigerant oil before installing.
13 Refrigerant Line
• From the A/C compressor.
14 Bracket
• For the refrigerant line.
15 Screws
• Tightening specification 9 Nm.
16 A/C Pressure/Temperature Sensor (G395)
• Housing color: gray
• Removing and installing, refer to => [ A/C Pressure/Temperature Sensor ] Service and Repair.
17 Condenser 1
• Left side of vehicle.
• Refrigerant line, disconnecting and reconnecting, refer to => [ Refrigerant Lines, Disconnecting from Condenser and Connecting ] Refrigerant Circuit.
• Removing and installing, refer to => [ Condensers, Left and Right ] Refrigerant Circuit.
18 O-ring Seals
• Replace.
• Lubricate lightly with refrigerant oil before installing.
19 Screws
• Tightening specification 9 Nm.
20 Refrigerant Line
• Connecting line between condenser 1 (left) and condenser 2 (right).
21 Refrigerant Line
• From the A/C compressor.
22 Refrigerant Line
• Connecting line between condenser 1 (left) and condenser 2 (right).
23 Cable Ties
24 Wear Protection
Component Group II - Body Front
1 Refrigerant Lines
• From the A/C compressor to condenser 1 (left).
2 Screw
• Tightening specification 9 Nm.
3 O-ring Seal
• For the refrigerant lines.
• Replace.
• Lubricate lightly with refrigerant oil before installing.
4 Screw
• Tightening specification 9 Nm
5 Refrigerant Line
• From condenser 2 (right) to the evaporator.
6 Refrigerant Line
• From the A/C compressor to condenser 1 (left).
7 Screw
• Tightening specification 9 Nm.
8 Refrigerant Line
• From condenser 2 (right) to the evaporator.
9 Refrigerant Line
• from the A/C compressor to condenser 1 (left)
10 Screw
• Tightening specification 9 Nm
11 Retaining Clamp
12 Refrigerant Line
• From condenser 2 (right) to the evaporator.
13 Screw
• Tightening specification 9 Nm.
14 Coolant Line Connections
• From the engine to the A/C unit.
• With a supply line to the left heat exchanger, supply line to the right heat exchanger and a central return line.
• In the passenger compartment over the center tunnel.
15 O-ring Seals
• For the coolant pipes.
• Replace.
16 Coolant Line Connections
• From the heat exchanger to the engine.
17 Refrigerant Line
• Supply from condenser 2 (right) to the evaporator.
• In the passenger compartment over the center tunnel.
18 Refrigerant Line
• Return from evaporator to the reservoir.
• In the passenger compartment over the center tunnel.
19 O-ring Seals
• For the refrigerant lines.
• Replace.
• Lubricate lightly with refrigerant oil before installing.
20 Refrigerant Line
• Return from evaporator to the reservoir.
• In the passenger compartment over the center tunnel.
21 Screw
• Tightening specification 9 Nm.
22 Refrigerant Line
• Supply from condenser 2 (right) to the evaporator.
• In the passenger compartment over the center tunnel.
23 Refrigerant Line
• Return from evaporator to the reservoir.
• In the center tunnel.
24 O-ring Seal
• For the refrigerant lines
• Replace.
• Lubricate lightly with refrigerant oil before installing.
25 Screw
• Tightening specification 9 Nm.
26 Refrigerant Line
• Return from evaporator to the reservoir
• in the center tunnel
27 O-ring Seal
• For the refrigerant lines
• Replace.
• Lubricate lightly with refrigerant oil before installing.
28 Refrigerant Line
• Supply from condenser 2 (right) to the evaporator
• In the center tunnel to the passenger compartment
29 Screw
• Tightening specification 9 Nm.
Component Group III - Body, Rear
• Rear refrigerant line connection locations for vehicles with a V10 engine.
1 Nuts
• Tightening specification 9 Nm.
2 Bracket
3 Refrigerant Line
• From the evaporator to the reservoir.
4 Refrigerant Line
• From the A/C compressor to condenser 1 (left).
5 Screw
• Tightening specification 9 Nm.
6 Refrigerant Line
• From the A/C compressor to condenser 1 (left).
7 Refrigerant Line
• From the evaporator to the reservoir.
8 Bracket
• For the refrigerant lines.
9 Refrigerant Line
• From the A/C compressor to condenser 1 (left).
10 Refrigerant Line
• From the evaporator to the reservoir.
11 Screw
• Tightening specification 9 Nm.
12 Nuts
• Tightening specification 9 Nm.
13 Screws
• Tightening specification 9 Nm.
14 Refrigerant Line
• From the evaporator to the reservoir.
15 Refrigerant Line
• From the A/C compressor to condenser 1 (left).
16 O-ring Seals
• Replace.
• Lubricate lightly with refrigerant oil before installing.
17 Refrigerant Line
• From the A/C compressor to condenser 1 (left).
Rear Refrigerant Line Connection Locations For Vehicles With a V10 Engine
A Refrigerant line - from the A/C compressor to condenser 1 (left)
B O-ring - replace; lightly coat with refrigerant oil before installing.
C Refrigerant line bracket
D Refrigerant line - from the A/C compressor to condenser 1 (left)
E Cable ties
F Screw - 9 Nm
G Refrigerant line - from the evaporator to the reservoir
H O-ring - replace; lightly coat with refrigerant oil before installing.
J Refrigerant line - from the evaporator to the reservoir
K Nut - 9 Nm
L Screw - 9 Nm
Component Group IV - Engine Compartment
1 Screw
• Tightening specification 25 Nm.
2 Refrigerant Line
• From the reservoir to the A/C compressor.
3 O-ring Seal
• Replace.
• Lubricate lightly with refrigerant oil before installing.
4 A/C Compressor
• V8 engine, removing and installing, refer to => [ Compressor ] Compressors. Vehicles with V10 engine, refer to => [ Compressor ] Compressors.
5 Refrigerant Line
• From the A/C compressor to condenser 1 (left).
• With a branch to the high pressure side service connection.
6 Screw
• Tightening specification 22 Nm.
7 High Pressure Side Service Connection
• Different versions (with primary sealing valve or with Schrader valve) depending on refrigerant line, distinguishing characteristics.
• To remove and install the service connection or the valve insert with the refrigerant circuit empty, use, for example, an adapter from the Socket for A/C Valves (T10364).
CAUTION!
Only remove service connections when the refrigerant circuit is empty. The connection does not have a valve.
• Installation location => [ (Item 4) High Pressure Side Service Connection ] Components Outside Passenger Compartment.
• In order to make the service connections accessible, the left service flap (for the A/C system) in the Audi R8 Spyder must be removed from the engine compartment trim of the compartment cover.
• In order to remove the service line, the engine compartment trim of the compartment cover must be removed on the Audi R8 Spyder.
8 O-ring Seal
• Replace.
• Lubricate lightly with refrigerant oil before installing.
9 Screw
• Tightening specification 25 Nm.
10 Reservoir
• Removing and installing, refer to => [ Reservoir ] Refrigerant Circuit.
11 O-ring Seal
• Replace.
• Lubricate lightly with refrigerant oil before installing.
12 Refrigerant Line
• From the reservoir to the A/C compressor.
13 Screw
• Tightening specification 9 Nm.
14 Screw
• Tightening specification 9 Nm
15 Refrigerant Line
• From the evaporator to the reservoir.
16 Low Pressure Side Service Connection
• Different versions (with primary sealing valve or with Schrader valve) depending on refrigerant line, distinguishing characteristics.
• To remove and install the service connection or the valve insert with the refrigerant circuit empty, use, for example, an adapter from the Socket for A/C Valves (T10364).
CAUTION!
Only remove service connections when the refrigerant circuit is empty. The connection does not have a valve.
• Installation location => [ (Item 7) Low Pressure Side Service Connection ] Components Outside Passenger Compartment.
• In order to make the service connections accessible, the left service flap (for the A/C system) in the Audi R8 Spyder must be removed from the engine compartment trim of the compartment cover.
• In order to remove the service line, the engine compartment trim of the compartment cover must be removed on the Audi R8 Spyder.
17 Screw
• Tightening specification 9 Nm.
18 O-ring Seal
• Replace.
• Lubricate lightly with refrigerant oil before installing.
Service Line For V10 Vehicles
1. Screw - 9 Nm
2. Service line
3. Cable ties
4. O-ring - replace
5. Screw - 9 Nm
6. Electrical wire to the A/C Compressor Regulator Valve (N280)
CAUTION!
The service line may be removed only when the refrigerant circuit is empty.
• Service Line, removing and installing, refer to => [ Service Line ] Refrigerant Circuit.
• In order to make the service connections accessible, the left service flap (for the A/C system) in the Audi R8 Spyder must be removed from the engine compartment trim of the compartment cover.
• In order to remove the service line, the engine compartment trim of the compartment cover must be removed on the Audi R8 Spyder.