Heater and A/C Unit Refrigerant Shut-Off Valve -N541-, REMOVING AND INSTALLING: Installing

WARNING: This page is about a different car, the 2023 Audi S3, 2023 Audi RS 3, 2023 Audi A3 Quattro, and 2023 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

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

-- Coat the O-ring seals -B- lightly with refrigerant oil before installing. Refer to SEALS AND GASKETS .

-- Insert the Heater and A/C Unit Refrigerant Shut-Off Valve -N541- correctly ("Arrow" points towards the expansion valve).

-- Tighten the union nuts -E- all the way by hand.

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-- Secure the refrigerant line -F- to the coupling point on the right longitudinal member in the bracket on the plenum chamber bulkhead.

-- Tighten the union nuts -E- using the Torque Wrench 1410 :VAG1410 and Torque Wrench 1332 Insert - Open Jaw - 22mm :VAG1332/12 at the same time counterhold on the Heater and A/C Unit Refrigerant Shut-Off Valve -N541- -D- and pay attention that the routing of the refrigerant lines is without tension.

-- Evacuate and charge the refrigerant circuit. Refer to Refrigerant Circuit or Working with A/C Service Station (1 Of 2) / Working with A/C Service Station (2 Of 2) .