Dryer Cartridge, Denso Condenser

Dryer Cartridge, Denso Condenser

• The reservoir may be attached to or integrated in the condenser, depending on the version of the condenser. Replace an attached reservoir. Refer to => [ Fluid Reservoir ] Fluid Reservoir.

• There are different condenser versions and the dryer cartridge installed inside them. Pay attention to the correct allocation, refer to the Electronic Parts Catalog.

• The dryer cartridge - D - and the O-ring - B - are the same in all condenser versions. Should a repair set is not be available for the Denso condenser, either replace the condenser completely or use the parts from the repair set from another condenser (in this example, from the repair set from the Denso condenser installed in the Audi A4 from MY 2008). Refer to the Electronic Parts Catalog. Clean the plastic screw - A -, the dryer carrier - C - and the filter - E - before using them again.






• There are various versions of the condenser and the installed dryer cartridge - D - (the illustration shows the version installed on a 4 cylinder vehicle with a Denso condenser). Refer to the Electronic Parts Catalog.






• The dryer cartridge - F - and the O-ring - B - are the same in all condenser versions. Should a repair set is not be available, either replace the condenser completely or use the parts from the repair set from another condenser (in this example, from the repair set from the condenser installed in the Audi A4 from MY 2008). Refer to the Electronic Parts Catalog. Clean the plastic screw - A - and the filter - C - (with the tube- E -) before using them again. The O-ring - D - only seal inside the circuit and can be used again in this single case if it is not damaged.

Removing

- Switch off ignition.

- Remove the front bumper.

- Discharge refrigerant circuit.


• Refrigerant must be extracted from refrigerant circuit before removing sealing cap - A -. If the plastic screw - A - is not removed within 10 minutes, pressure may form in the refrigerant circuit due to evaporation. Extract refrigerant once more.

- Remove the plastic screw - A - (tightening specification: 2 Nm).







Only remove the plastic screw - A - when the pressure in the refrigerant circuit is the same or less than the ambient pressure.

- Check the refrigerant circuit pressure using, for example, a pressure gauge from the A/C Service Station.

• Depending on the version of the vehicle (of the front end module) it may also be necessary to loosen the condenser from the front end module in order to remove and install the dryer cartridge. Refer to => [ Condenser ] Condenser.

- Remove the dryer carrier - C - and the dryer cartridge - D - from the condenser.

- Pull the filter - E - out of the condenser using, for example, a commercially available pick-up tool.

• Seal the open connection on the condenser with the plastic screw - A - to prevent dirt and moisture from getting in.

Installing

Installation is done is reverse order, observe the following:

• Check the reservoir on the condenser above the opening - F - for dirt.

• Make sure the reservoir thread - F - on the condenser is not dirty or damaged.

• Replace the plastic screw - A -, the dryer carrier - C -, the dryer cartridge - D -, the filter - E - and the O-ring - B -.

• Coat the O-ring - C - lightly with refrigerant before installing. Refer to => [ Refrigerant Circuit O-rings ] Refrigerant Circuit O-Rings.

• Make sure the O-ring - B - fits correctly inside the groove on the plastic screw - A -.

• Keep the dryer cartridge - D - sealed in its air-tight package as long as possible. Open the package just before installing the dryer cartridge into the condenser. The dryer cartridge absorbs moisture in a very short time and become unusable.

- Install the filter - E - with the correct side into the condenser reservoir.

- Take the dryer cartridge - D - out of its package and install it into the dryer carrier - C -.

- Install the dryer cartridge - D - and dryer carrier - C - into the condenser reservoir.

- Install the plastic screw - A - (tightening specification: 2 Nm).

- Install the front bumper.

- Install remaining components.

- Discharge and fill the refrigerant circuit.

- Operate the A/C system after filling the refrigerant circuit. Refer to=> [ A/C System, Operating After Filling Refrigerant Circuit ] Procedures.

• Note the information regarding operating the A/C system after filling.