Cooling System: Service Precautions

Cooling system components, removing and installing

WARNING! Observe the following for all installations, especially in engine compartment due to lack of room:

^ Route lines of all types (e.g. for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
^ Watch for sufficient clearance to all moving or hot components.

Notes:
^ The cooling system is under pressure when engine is warm. If necessary reduce pressure before repair.
^ All hose connections are secured with spring clips. If replacing, only use spring clips.
^ VAS5024 spring clip installation tool is recommended for installing spring clips.
^ When installing coolant hoses, make sure they are free of stress and do not come into contact with other components (observer markings on coolant connections and hoses).

Use VAG1274 cooling system tester with VAG1274/8 and VAG1274/9 adapters to test coolant system for proper seal
Cooling system components (on body).
Cooling system components (on engine).
Coolant hose connection diagram, Refer to Radiator hose.
Draining and refilling coolant, Refer to Coolant.
Coolant mixture values, Refer to Specifications.