Cooling system components, servicing: Notes
WARNING: This page is about a different car, the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Jetta, and 1996 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
- The cooling system is pressurized when the engine is warm. When opening the expansion tank, wear gloves and other appropriate protection, cover the cap with a cloth and open carefully to relieve system pressure slowly.
- Do not re-use any fasteners that are worn or deformed in normal use.
- Some fasteners are designed to be used only once, and are unreliable and may fail if used a second time. This includes, but is not limited to, nuts, bolts, washers, circlips and cotter pins. Always follow the recommendations in this manual -replace these fasteners with new parts where indicated, and any other time it is deemed necessary by inspection.
NOTE:
- Hoses are secured with spring-type clips. In cases of repair only use spring-type clips for replacements.
- VAG1921 pliers are recommended for installing spring-type hose clamps.
- Engine coolant, draining and filling, see COOLING SYSTEM, DRAINING AND FILLING
- Coolant mixture ratios, see COOLING SYSTEM, DRAINING AND FILLING
- Cooling system leak-testing, use VAG1274 cooling system tester and VAG1274/3 adapter