audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Heater Core > < Evaporator Drain Tube|Service and Repair
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Expansion Block/Orifice Tube: Service and Repair

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Discharge A/C refrigerant system. 

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Remove evaporator inlet (high pressure) line. See: Hose/Line HVAC

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Using long nose pliers, remove restrictor -A- from evaporator inlet.

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Install in reverse order of removal noting the following:

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Replace 0-ring -A-.
O-ring: 7.5 mm inside diameter, 1.5 mm thickness

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Insert restrictor -A- into evaporator inlet so that arrow on restrictor points toward evaporator.

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Push restrictor into inlet until fully seated.

NOTE:
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Restrictor must fit tight in inlet.

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Only use new O-rings specified for use with R-134a.

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O-ring and torque specifications also apply to threaded connections in the A/C lines.

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Make sure that A/C refrigerant lines are properly insulated from exhaust system heat.

Heater Core > < Evaporator Drain Tube|Service and Repair