Cooling System Components, Servicing

Cooling system components, servicing

CAUTION:
When performing repair work, especially due to the confined conditions in the engine compartment, pay attention to the following:
^ Route all types of lines (e.g. for fuel, hydraulics, EVAP system, coolant, refrigerant, brake fluid and vacuum) as well as electrical wiring so that the original positions are restored.
^ Make sure sufficient clearance to all moving or hot components.

Note:
^ When the engine is warm the cooling system is under pressure. If necessary release pressure before commencing repair work.
^ Hoses are secured with spring-type clips. In cases of repair only use spring-type clips.





^ Assembly tool VAS 5024 or hose clip pliers VAG 1921 are recommended for installing spring-type clips.
^ When installing coolant hoses route stress-free so that they do not come into contact with other components (observe markings on coolant connection and hose).

Perform cooling system leakage test with cooling system tester VAG 1274 and adapters VAG 1274/8 and VAG 1274/9.
Parts of cooling system, body side, Refer to Components of Cooling System, Body Side
Parts of cooling system, engine side, Components of Cooling System, Engine Side
Coolant hose connection diagram, Refer to Cooling System Diagram, Fluid
Disassembling and assembling coolant thermostat housing, Refer to Thermostat Housing
Draining and filling coolant, Refer Cooling System, Draining and Filling Coolant
Coolant mixing ratios, Refer Cooling System, Draining and Filling Coolant.