Skoda Octavia III 2013 Workshop Manual page 195

Work procedure
– Open cap -arrow- for coolant expansion tank.
• Engine at operating temperature.
WARNING
Danger of scalding due to hot steam and hot coolant.
♦ When the engine is warm, the cooling system is under
overpressure.
♦ Reduce excess pressure by covering the cap of the cool‐
ant expansion tank with a cloth and opening it carefully.
– Fit the cooling system testing device - V.A.G 1274 B- with
adapter -V.A.G 1274/8- onto the coolant expansion tank.
– Using hand pump on tester, build up a pressure of approx.
1.0 bar.
WARNING
Risk of scalding!
♦ Before the cooling system testing device - V.A.G 1274 B-
is separated from the connecting hose or the connecting
piece - V.A.G 1274 B/1- , the existing pressure must ab‐
solutely be released.
♦ For this step, press the pressure relief valve on the cooling
system testing device - V.A.G 1274 B- and hold it pressed
until the pressure gauge indicates the value »0«.
– If the pressure drops determine leak positions and repair.
Check pressure relief valve in cap.
– Fit the cooling system testing device - V.A.G 1274 B- with
adapter -V.A.G 1274/9- onto the cap.
– Build up overpressure using hand pump on cooling system
tester.
♦ The pressure relief valve should open at a pressure of
1.4...1.6 bar.
Octavia III 2013 ➤ , Octavia III 2014 ➤
1.8/132 kW TSI; 2.0/162 kW TSI engines - Edition 01.2015
187
1. Cooling system