REFRIGERANT LINES, DISCONNECTING AND CONNECTING AT A/C COMPRESSOR, Vehicles with 2.0L: Installing

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Installation is the reverse of removal, noting the following:

-- Replace the O-rings seals -D- and -E-. Allocate correct version.

Fig 1: Identifying Bolts And Refrigerant Pipes

Courtesy of AUDI OF AMERICA, LLC

-- Check the guide ring -F- on the connections for both refrigerant lines -B- and -C- for damage.

-- Clean the refrigerant line and A/C compressor connections and check for damage.

-- Coat the O-ring seals with refrigerant oil prior to installation. Refer to REFRIGERANT CIRCUIT SEALS .

-- Insert the respective O-ring (-D- and -E-) into the groove -G- on the connections for both refrigerant lines -B- and -C-.

NOTE:

Do not use the O-rings from the sealing caps that are installed on the connections in the replacement compressor when installing the lines.

Make sure the O-rings fit correctly inside the groove -I- on each refrigerant line.

-- Insert both refrigerant lines -B- and -C- into the respective connection on the A/C compressor.

-- Tighten the bolts -A- to 9 Nm (bolts with a M6 thread) and to 25 Nm (bolts with a M8 thread).

NOTE:

Following attachment of refrigerant pipes to A/C compressor (and installation of the A/C compressor) check routing of pipes. They must be inserted in holders provided and not make contact with other components.

-- Evacuate the refrigerant circuit and fill it. Refer to USING SERVICE STATION . For additional information, refer to OVERVIEW - REFRIGERANT CIRCUIT, NOT OPENING THE REFRIGERANT CIRCUIT, VEHICLES WITHOUT HIGH VOLTAGE SYSTEM and OVERVIEW - REFRIGERANT CIRCUIT, OPENING THE REFRIGERANT CIRCUIT, VEHICLES WITHOUT HIGH VOLTAGE SYSTEM (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).

-- Install the remaining removed components.

-- Turn on the ignition.

-- Check the DTC memory for the Climatronic Control Module -- display and control head and erase any displayed malfunctions, if necessary using the Vehicle Diagnostic Tester in the "Guided Fault Finding " function.

-- Operate the A/C system after filling the refrigerant circuit. Refer to A/C SYSTEM, STARTING OPERATION AFTER FILLING REFRIGERANT CIRCUIT .

NOTE:

Observe the information regarding operating the A/C system after filling. Refer to A/C SYSTEM, OPERATING AFTER CHARGING , (Refrigerant R134a, Servicing; A/C System, General Information). After charging the A/C system before activating the A/C system.