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volkswagen Workshop Repair Guides


Passat Sedan V6-3.6L (BLV) (2008)

Engine, Cooling and Exhaust > Cooling System > Heater Core > Component Information > Service and Repair > Page 2452

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Seal the flange for coolant pipes to heater core - A - and for expansion valve (to evaporator, only in vehicles with A/C system) -  B - at
pass-throughs of grommet - C - with silicon adhesive sealant if necessary (to prevent water from penetrating).

‹› Sealing rings must always be replaced.

‹› If hose clamps are deformed, replace them.

‹› After replacing heater core, coolant must be replaced completely.

‹› Check coolant circuit for leaks, pay particular attention between coolant hoses and heater core.

Engine, Cooling and Exhaust > Cooling System > Heater Core > Component Information > Service and Repair > Page 2452

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