Volkswagen cooling system removing and installing Manual
Volkswagen cooling system removing and installing Manual. When the engine is warm, the cooling system is under pressure. If necessary release pressure before beginning repair work. Hoses are secured with spring-type clips. In cases of repair use spring-type clips. VAG 1921 pliers are recommended when installing spring-type clips. Perform cooling system leakage check with cooling system tester VAG 1274 and adapter 1274/3. draining and filling with coolant, Checking thermo switch and coolant circulation pump or continued coolant circulation pump. Coolant fan control (FC) thermal switch -F18-, 35 Nm.Engine cold (coolant temperature below 25 C) shutoff ring item. Check with cooling system tester VAG 1274 and adapter VAG 1274/4. Removing, installing and tensioning camshaft toothed belt; Coolant circulation engine coolant temperature(ECT) thermal switch -F51- or After-run coolant thermal switch -F95- Checking engine coolant temperature thermal switch -F51- or after-run coolant thermal switch. If the cooling system was filled with G 11 anti-freeze -colored green-: – Drain coolant: Either via drain plug -1- and coolant hose -2-, or via thermostat connection -3-. – Before reinstalling the coolant hose or flange and filling with new anti-freeze G 12 -colored red-, the cooling system must be flushed out. – Remove as much of the coolant remains as is possible from the cooling system. To do this e.g. blow compressed air into the coolant expansion tank. – Close cooling system and top off with with pure water.
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