WARNING | Steam may escape when expansion tank is opened. Wear eye protection and protective clothing to avoid eye injuries and scalding. Cover cap with cloth and open carefully. |
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| The cooling system is under pressure when the engine is hot. If necessary, release pressure before beginning repair work. |
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| Secure all hose connections with correct type of hose clips (same as original equipment). |
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| Hose clip pliers -V.A.G 1921- or spring-type clip pliers -VAS 5024A- are recommended for installation of spring-type clips. |
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| Renew gaskets and seals. |
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| The arrows on the coolant pipes and on the ends of the hoses must be aligned with each other. |
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| Vehicles with engine codes BVY, BVZ and BVX have no map-controlled engine cooling thermostat -F265-. |
| Assembly overview - parts of cooling system, engine side, engine codes AXW, BLX, BLY, BLR → Chapter |
| Assembly overview - parts of cooling system, engine side, engine codes BVX, BVY, BVZ → Chapter |
| Assembly overview - parts of cooling system - body side → Chapter |
| Removing and installing coolant pump → Chapter. |
| Removing and installing coolant pipe → Chapter |
| Assembly overview - coolant distributor housing with thermostat → Chapter |
| Mapped cooling, engine codes AXW, BLX, BLY, BLR → Chapter |
| Removing and installing radiator fan -V7- and radiator fan 2 -V177- → Chapter |
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