Beetle L4-1.9L DSL Turbo (ALH) (1998)
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Hose/Line HVAC: Description and Operation
A/C System Hoses and Lines
The mixture of refrigerant oil (PAG oil) and refrigerant R-134a attacks some metals and alloys (for example, copper) and breaks down certain hose
material. Use only hoses and lines that are identified with a green mark (stripe) or the lettering "R-134a".
Hoses and lines are fastened together with threaded couplings/fittings and are retained (to bodywork or components) with specially isolated hose clamps.
NOTE:
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During servicing, all couplings, fittings and related fasteners must be torqued to specifications. Refer to "A/C Refrigerant System, Replacing
Components" See: Service and Repair
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Ensure that only special tools (as specified) are used while servicing.
