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Repair Volkswagen cars manual 19-1 Cooling system components, removing and installing Note: When engine is warm, cooling system is under pressure. Release any pressure before starting repair work. A new coolant additive, G12, is being used in production from 07.96. G12 is identified by its red color. Never mix G12 with any other coolant additive! You can see contamination of G12 with other color coolants by its color (brown, purple, etc.). This mixture causes a foamy deposit in the expansion tank and radiator. G12 coolant additive may be used in older vehicles when original coolant is drained and the cooling system is flushed. Contaminated coolant must be drained immediately and the cooling system flushed. Hoses are secured with spring-type clips. When performing repairs only use spring-type clips. VAG 1921 pliers are recommended for installing spring-type clips. When installing coolant hoses, always route them stress-free, so they dont come into contact with other components (observe markings on coolant connection and hose). Check cooling system for leaks using cooling system tester VAG 1274 and adapter VAG 1274/3. Cooling system components (body side) Page 19-3 Cooling system components (engine side) Page 19-6 19-2 Coolant hose connections, diagram Page 1910 Coolant system, draining and filling Page 1914 Coolant mixing ratios Page 19-14 Coolant system, flushing Page 19-18 19-3 Cooling system components (body side) 1 10 Nm (7 ft lb) 2 Lock carrier 3 Securing rubbers 4 Coolant Fan Control Thermal switch -F1835 Nm (26 ft lb) Switching temperatures: Stage 1: ON: 84 to 89 C (183 to 192 F) OFF: 76 to 83 C (169 to 181 F) Stage 2 ON: 90 to 95 C (194 to 203 F) OFF: 82 to 89 C (180 to 192 F) 5 3-pin harness connector Black For Coolant Fan Control Thermal switch F186 Left Coolant fan -V7Removing and installing Page 19-22 7 Right Coolant fan -V35Removing and installing Page 19-22 19-4 8 2-pin harness connector Black For Right Coolant fan -V359 2-pin harness connector Black ...
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