S4 V8-4.2L (BHF) (2004)
Hose/Line HVAC: Removal and Replacement
Refrigerant Lines on Evaporator Flange, Removing and Installing
Refrigerant Lines On Evaporator Flange, Removing And Installing
Disconnecting
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Remove plenum chamber cover.
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Discharge refrigerant circuit Refrigerant R134a - Servicing.
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Remove nut - A - (tightening torque 25 Nm).
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Remove refrigerant lines from evaporator and seal open connections.
NOTE: Closing cap of replacement evaporator is a suitable means of sealing open connections at evaporator - D - and lines (to prevent dirt and
moisture).
Installing
Install in reverse order, paying attention to the following:
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Replace O-rings - B - and - C -.
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Install refrigerant lines such that they are not strained.
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After installing refrigerant lines, check proper installation of grommet - E - and bushing - F -.
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Check position of refrigerant lines to evaporator. They must not make contact with other components.
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Check type of seal at connections and refrigerant lines (must be designed for same type of seal).
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Evacuate and recharge refrigerant circuit. Refrigerant R134a - Servicing.