Refrigerant Pipes From Condenser
Refrigerant Pipes from Condenser
Special tools, testers and auxiliary items required
• Engine Bung Set (VAS 6122)
• There are different versions of the condenser. Check the version and allocation before installing. Refer to => [ Condenser, Checking Version ] Testing and Inspection and to the Parts Catalog.
• To remove the condenser from the front end or to remove the radiator, it may be necessary to drain the refrigerant circuit and to remove the refrigerant pipe from the condenser, depending on the version of the radiator and of the condenser. Refer to => [ Condenser ] Condenser.
Removing
- Turn off the ignition.
- Drain the refrigerant circuit.
• Depending on the allocation of the service connection an on the refrigerant line, and on the version of the vehicle, it may be necessary to remove the additional reinforcement on the left suspension strut dome so that the service coupling of the service station can be connected (for example, on the Audi Q5).
- Remove the bolts (or clips) - 1, 2, 3 and 5 -. Refer to Removal and Installation.
- Remove the cover - 4 - from the lock carrier and hang it on the radiator grille. Removal and Installation.
- Remove the bolt - B -.
- Remove the refrigerant line - A - from the condenser.
- Unlock the retainers - arrows A - and remove the left air intake grille - 1 - from the bumper cover - arrow B -.
- Remove the bolt - B -.
- Remove the refrigerant line - A - from the condenser.
• Seal open pipes and connections at condenser with suitable caps (to prevent ingress of dirt and moisture).
• The Audi Q5 has a refrigerant line made up of two pieces; do not open the connections between both pieces to remove the condenser.
• If one piece of the refrigerant line on the Audi Q5 has to be replaced, then the same tightening specification for the bolt on the condenser connection applies to the bolt on the connection.
Installing
Installation is done is reverse order, observe the following:
- Clean the refrigerant line connections on the condenser and on the refrigerant lines and check for damage.
- Replace the O-rings - C -. Refer to Electronic Parts Catalog (ETKA).
• Follow the instructions for installing the O-rings. Refer to => [ Refrigerant Circuit O-rings ] Refrigerant Circuit O-Rings.
• Following attachment, check routing of refrigerant lines on condenser. They must be inserted in holders provided and not make contact with other components.
• The refrigerant line - C - (from the condenser to the quick-release coupling on the refrigerant line with the inner heat exchanger) is secured by a clip - B - to the fender brace - A - from MY 2008. The fender brace - A - has a hole - D - (diameter 6.5 mm). If the fender brace - A - does not have hole - D - (or a refrigerant line - C - without a clip - B -), then secure the refrigerant line - C - to the fender brace - A - with a cable tie. Wrap the refrigerant line - C - on the contact surface with a piece of foam (to protect against damage).
- Coat the O-ring seals with refrigerant oil prior to installation. Refer to => [ Refrigerant Circuit O-rings ] Refrigerant Circuit O-Rings.
- Make sure the O-ring fits correctly inside the grooves - arrows - on each mount.
- Check the fitting pin - A - (not installed on all connections) and refrigerant line connections - B - - E - and - F - for damage and proper seating.
- Tighten the screws - D -.
• Tightening specification: 9 Nm.
- Install the cover on the lock carrier. Refer to Removal and Installation.
- Evacuate and fill the refrigerant circuit.
- Install the remaining removed components.
- Switch on the ignition.
- Check the Climatronic control module (J255) DTC memory and erase any displayed malfunctions if necessary. Refer to the Vehicle diagnostic tester in "Guided Fault Finding".
- Operate the A/C system after filling the refrigerant circuit. Refer to => [ A/C System, Operating after Filling Refrigerant Circuit ] A/C System, Operating after Filling Refrigerant Circuit.
• Note the information regarding operating the A/C system after filling.