Check Valve In Refrigerant Line From Valve Block, Removing And Installing: Installing

Install in the reverse order of removal while noting the following:

• Pay attention to the flow direction of the check valve -E- (sticker).

-- Replace the O-rings -2-. Refer to REFRIGERANT CIRCUIT SEALS .

Courtesy of AUDI OF AMERICA, LLC

-- If equipped, check the alignment pins -6- on the refrigerant lines for damage and correct seating.

-- Check the routing after securing refrigerant lines. They must be inserted in their brackets and must not come into contact with other components.

-- Install the Refrigerant Expansion Valve 2 -N637-. Refer to Refrigerant Expansion Valve 2 -N637-, REMOVING AND INSTALLING .

-- Reinstall the removed components in the reverse order and reattach detached components.

-- Evacuate and fill the refrigerant circuit. Refer to Refrigerant Circuit (Refrigerant R134a Servicing, Refrigerant Circuit, Working with A/C Service Station) or Working with A/C Service Station .

-- Switch the ignition on.

-- Initiate the basic setting of the A/C system using the Thermal Management Control Module -J1024- and activate the electric valves using the routine Stop routine refrigerant circuit filling/flushing  in the Vehicle Diagnostic Tester .

-- Operate the A/C system after charging the refrigerant circuit. Refer to A/C SYSTEM, STARTING AFTER CHARGING REFRIGERANT CIRCUIT, VEHICLES WITH HIGH-VOLTAGE SYSTEM .