SEAT Workshop Service and Repair Manuals

Check the cooling system for leaks Special tools and workshop equipment required

t  Cooling system tester -V.A.G 1274 B-

t  Adapter for cooling system tester -V.A.G 1274/8-

t  Adapter for cooling system tester -V.A.G 1274/9-

t  Adapter for cooling system tester -V.A.G 1274/10- Test condition l  Engine must be warm. Checking process:   WARNING Steam may be released when opening the expansion tank. Cover the cap with a cloth and open carefully. –  Open filler cap from expansion tank.

–  Screw adapter for cooling system tester -V.A.G 1274/8- into coolant expansion tank -1-. –  Screw adapter for cooling system tester -V.A.G 1274/10- into adapter for cooling system tester -V.A.G 1274/8-. –  Clamp connector -V.A.G 1274 B/1- into adapter for cooling system tester -V.A.G 1274/10-. –  Join connection piece -V.A.G 1274 B/1- to cooling system tester -V.A.G 1274 B- using connecting hose supplied. –  Build up pressure with hand pump on cooling system tester. Approx. 1.5 bar pressure.   DANGER! Risk of scalding! Before disconnecting cooling system tester -V.A.G 1274 B- from the connecting hose or connector -V.A.G 1274 B/1-, it is essential that the pressure is relieved. To do this, press pressure relief valve on cooling system tester -V.A.G 1274 B- until pressure gauge displays value of »0«. If the pressure drops: –  Search for leaks within engine compartment and on underside of vehicle. Check pressure relief valve in cap.

–  Screw cap -1- into adapter for cooling system tester -V.A.G 1274/9--2-. –  Clamp connector -V.A.G 1274 B/1- into adapter for cooling system tester -V.A.G 1274/9-. –  Join connection piece -V.A.G 1274 B/1- to cooling system tester -V.A.G 1274 B- using connecting hose supplied. –  Build up a pressure of approx. 1.6 bar using hand pump on cooling system tester. The pressure relief valve must not open. If the pressure relief valve opens prematurely: –  Replace the sealing plug. –  Increase pressure. The pressure relief valve must open once the opening pressure is exceeded. If the pressure relief valve does not open: –  Replace the sealing plug.