Evaporator, Removing And Installing: Installing

WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, 2016 Volkswagen Jetta, and 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Install in reverse order of removal and note the following:

-- If an expansion valve is not installed on the new evaporator, then transfer the expansion valve from the old evaporator. Refer to EXPANSION VALVE, REMOVING AND INSTALLING .

-- Coat the new seals with refrigerant oil before installing.

-- Before installing the evaporator -2-, check the condensation water drain in the evaporator housing lower section -5- and clean if necessary.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Clean the evaporator housing lower section -5- and, the evaporator -2- if necessary before installing.

-- Make sure that the seal -1- is not damaged and is sealed all the way around before the evaporator -2- is installed.

-- Mount the insulation -3- on the expansion valve -4-.

-- Install the evaporator -2- in the evaporator housing lower section -5-. Pay attention that the surrounding seal -1- is not damaged.

NOTE:

Check that the insulation -3- has been installed correctly after the assembly of both housing halves.

If the insulation -3- is missing or not installed correctly, it can cause reduced the performance of the A/C system (change of adjusted control characteristics of expansion valve due to radiant heat).

The smallest leaks at the tongue and groove joint between the upper and lower sections of the evaporator housing can lead to whistling noises due to escaping air. Lightly coat the connection points with silicone grease, for example. Refer to the Parts information for the correct silicone grease.