A/C COMPRESSOR, REMOVING AND INSTALLING, Vehicles with 3.0L, Diesel: Installing

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Fig 1: View Of Refrigerant Lines To A/C Compressor (Engine Code CPNB, 3.0L)

Courtesy of AUDI OF AMERICA, LLC

Installation is done is reverse order, observe the following:

NOTE:

There is a quantity of refrigerant oil in the removed A/C compressor, therefore observe the notes for replacing the A/C compressor. Refer to REFRIGERANT CIRCUIT COMPONENTS, REPLACING and A/C COMPRESSOR, REMOVING AND INSTALLING, Vehicles with 3.0L, Diesel (Refrigerant R134a, Servicing; Refrigerant Circuit Components, Replacing).

-- If required, remove the alignment sleeves -A- from the A/C compressor.

-- Thoroughly clean the surfaces on the compressor.

-- Install the alignment sleeves -A- in the A/C compressor.

NOTE:

Make sure the alignment sleeves are seated correctly and the contact surfaces are clean. Alignment sleeves that are installed incorrectly and dirty or damaged contact surfaces can lead to alignment irregularities between the compressor and engine. Alignment irregularities over operating time lead to damage to the ribbed belt input shaft or to the A/C compressor.

The alignment sleeves -A- have different styles (different lengths), make sure to use the correct style. .

Fig 2: A/C compressor, Alignment Sleeves & Contact Surfaces

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Ensure bushings -A- are properly seated and contact surfaces are clean. Bushings installed incorrectly and dirty or damaged contact surfaces -C- on the bracket or A/C compressor can lead to alignment irregularities between the A/C compressor and engine. Alignment irregularities over operating time lead to damage to the ribbed belt or A/C compressor.

-- Install bolts -A-, -B- or -C-.

Fig 3: View Of A/C Compressor Mounting Bolts -A-, -B- And -C-

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CAUTION:

Depending on the engine and when the vehicle was manufactured, the different bolts have different tightening specifications.

Ensure the correct allocation.
Aluminum bolts (item -A-) only to be used once, replace.
Tightening specification for aluminum bolts (item -A-) 8 Nm +180°
Tightening specification for steel bolts (here -B- and -C-) 25 Nm

-- Tighten the bolts -arrows-.

Fig 4: A/C Compressor Mounting Bolts (Engine Code CPNB, 3.0L)

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-- Connect the refrigerant lines to the A/C compressor. For the tightening specification for the bolts -B-), O-ring seal measurements -C- and additional information. Refer to REFRIGERANT LINES, DISCONNECTING AND CONNECTING AT A/C COMPRESSOR .

Fig 5: View Of Refrigerant Lines To A/C Compressor

Courtesy of AUDI OF AMERICA, LLC

-- Turn the A/C compressor by hand 10 rotations before installing the ribbed belt on the pulley (to prevent damage to the compressor when it is first switched on).

-- To install the ribbed belt, move the tensioner using the Torx Socket - T60 T40087 in direction of the -arrow-. Refer to RIBBED BELT, REMOVING AND INSTALLING .

Fig 6: Rotating Tensioner In -Direction Of Arrow- Using Torx(R) Socket T60 T40087

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-- Install the Throttle Valve Control Module -J338-. Refer to Throttle Valve Control Module -J338-, REMOVING AND INSTALLING .

-- Install the longitudinal brace. Refer to OVERVIEW - LOCK CARRIER .

NOTE:

Secure all hose connections with hose clamps used in series production. .

In order to be able to secure the charge air hoses to their connections, the screw clamps already used must be sprayed with a rust remover before being installed.

After fastening the A/C compressor and installing the refrigerant line, check installation position of refrigerant lines, lines must be engaged in bracket (if installed, depending on engine).

Check refrigerant lines and their bracket to ensure there is enough distance to the other components. Ensure there is also enough distance between belts, bracket and pulley.

-- 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.

-- 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.