A/C Refrigerant System
- Components marked with a 1) can be repaired or replaced without discharging the A/C system.- All components NOT marked with 1) and all refrigerant hoses and lines can only be replaced with the A/C system discharged. Service and Repair
- Replacement A/C compressors supplied by the parts department are filled with 300 cc (10.1 oz) of A/C refrigerant oil. This is the total A/C system refrigerant oil capacity.
- Refrigerant system has no sight glass. System must NOT be "topped off."
- A/C system cooling performance checking. Testing and Inspection
- A/C refrigerant system:
Capacities. Capacity Specifications
Troubleshooting. Testing and Inspection
Checking pressures. Testing and Inspection
- A/C system components, replacing. Service and Repair
- Removing and installing ribbed drive belt, refer to the Engine/Drive Belts, Mounts, Brackets and Accessories.
CAUTION!
- Mark travel direction of ribbed belt before removing. Reversing direction could cause belt to fail.
- If a new compressor is installed, or if system has just been recharged, manually turn the A/C compressor 10 rotations before operating the system to prevent compressor damage.
1 - A/C compressor (Zexel)
- 2.8 liter V6 engine See Compressor bracket, removing and installing. Service and Repair
- 2.22 liter 5-cyl. Turbo engine (S4/S6) See Removing and installing compressor from bracket 1). Service and Repair
Low pressure connection:
- O-ring size: 17.2 mm inside diameter, 1.8 mm thickness
- Tightening torque:
40 Nm (30 ft lb)
High pressure connection:
- O-ring size: 14.0 mm inside diameter, 1.8 mm thickness
- Tightening torque:
30 Nm (22 ft lb)
NOTE: The variable displacement A/C compressor varies piston stroke and out- put depending on load requirements and suction pressure.
CAUTION
Discharge A/C refrigerant system before removing A/C compressor speed sensor.
2 - A/C compressor speed sensor -G111-
- O-ring size: 15.6 mm inside diameter, 1.5 mm thickness
3 - A/C compressor clutch -N25-
CAUTION!
Remove the drain plug only after the compressor has been removed. It is used only to drain oil from old compressor and to check oil level in a new compressor.
4 - Oil drain plug
- O-ring size: 7.5 mm inside diameter, 1.8 mm thickness
- Tightening torque: 10 Nm (7 ft lb)
WARNING!
Discharge A/C refrigerant system before removing pressure relief valve.
5 - Pressure relief valve
- O-ring size: 9.3 mm inside diameter, 1.8 mm thickness
- Tightening torque: 10 Nm (7 ft lb)
6 - Service valve (high pressure)
- For A/C refrigerant high pressure switch -F118-
- Remove switch -F118- and connect A/C high pressure gauge when checking pressures, discharging, evacuating or charging system
NOTE: For checking system pressure, remove A/C refrigerant high pressure switch -F118- and reconnect to connector.
7 - A/C refrigerant high pressure switch -F118-
8 - Condenser
Intake connection:
- O-ring size: 14.0 mm inside diameter, 1.8 mm thickness
- Tightening torque:
30 Nm (22 ft lb)
Outlet connection:
- O-ring size: 10.8 mm inside diameter, 1.8 mm thickness
- tightening torque:
15 Nm (11 ft lb)
- For improved access to ribbed belt, swing condenser and radiator forward.
9 - Service valve (high pressure)
- For A/C high pressure switch -F23-
- Remove switch -F23- and connect A/C high pressure gauge when checking pressures, discharging, evacuating or charging system
10 - A/C refrigerant high pressure switch -F23-
11 - Refrigerant line connection
- O-ring size: 10.8 mm inside diameter, 1.8 mm thickness
- tightening torque:
15 Nm (lift lb)
12 - Restrictor
- O-ring size: 7.5 mm inside diameter, 1.8 mm thickness
13 - Evaporator
Intake connection:
- O-ring size: 10.8 mm inside diameter, 1.8 mm thickness
- Tightening torque:
15 Nm (11 ft lb)
Outlet connection:
- O-ring size: 17.2 mm inside diameter, 1.8 mm thickness
- Tightening torque:
40 Nm (30 ft lb)
NOTE: The evaporator housing cannot be disassembled and must be replaced as an assembly
14 - A/C refrigerant low pressure switch (F73)
15 - Service valve (low pressure)
- For A/C refrigerant low pressure switch -F73-
- Remove switch -F73- and connect A/C low pressure gauge when checking pressures, discharging, evacuating or charging system
NOTE: When checking system pressures and/ or charging/discharging, bridge connector terminals of A/C refrigerant low pressure switch -F73-.
16 - Accumulator (reservoir)
Intake connection:
- O-ring size: 17.2 mm inside diameter, 1.8 mm thickness
- Tightening torque:
40 Nm (30 ft lb)
Outlet connection:
- O-ring size: 17.2 mm inside diameter, 1.8 mm thickness
- Tightening torque:
40 Nm (30 ft lb)
17 - Service valve (low pressure)
- Connect A/C low pressure gauge when checking pressures, discharging, evacuating or charging system
18 - Cap
1) Can be performed without discharging A/C system.