seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Fuel supply, gas operation > < Replacing radiator fan motor

Leon Mk2

Check the cooling system for leaks
   
Check the cooling system for leaks
Consult the equivalence table for tools and equipment according to applicability between Seat / VW / Audi / Skoda → Chapter
Special tools and workshop equipment required
t  Coolant tester -VAG 1274B-, see equivalent → Anchor
t  Adapter -VAG 1274/8-, see equivalent → Anchor
t  Adapter -VAG 1274/9-, see equivalent → Anchor

Test condition
l  Engine must be warm.
Checking sequence
  WARNING
Hot vapour/hot coolant may escape when opening expansion tank. Cover cap with cloth and open carefully.
–  Open cap on coolant expansion tank.
   
–  Mount the cooling system tester -VAG 1274B- with adapter -VAG 1274/8- onto the expansion tank.
–  Use hand pump on cooling system tester to create a pressure of approx. 1.0 bar.
If the pressure drops:
–  Locate the leak and rectify the fault.
Checking pressure relief valve in filler cap
  A19-10646
–  Place the cooling system tester -VAG 1274B- with adapter -VAG 1274/9- onto the filler cap.
–  Use hand pump on cooling system tester to create pressure.
l  At a pressure of 1.4 ... 1.6 bar, the pressure release valve should open.
If the pressure relief valve does not open:
–  Replace the sealing plug.
  A19-10748

Fuel supply, gas operation > < Replacing radiator fan motor