Skoda Octavia III 2013 Workshop Manual page 158

Octavia III 2013 ➤ , Octavia III 2014 ➤
1.2/63; 77 kW TSI engine - Edition 11.2014
– Position the cooling system testing device - V.A.G 1274- with
adapter - V.A.G 1274/8 - on the coolant expansion reservoir.
– Using the hand pump of the testing device generate an over‐
pressure of approx. 0.1 MPa (1.0 bar).
If pressure drops:
– Search position of the leak and repair fault.
Testing the pressure relief valve in the cap
– Fit the cooling system testing device - V.A.G 1274- with adapt‐
er - V.A.G 1274/9- onto the cap.
– Operate the handpump.
• The pressure relief valve should open at a pressure of
0.14...0.16 MPa (1.4...1.6 bar).
If the pressure relief valve does not open:
– Renew cap.
1.3.2 Checking with the cooling system test‐
ing device - V.A.G 1274 B-
Special tools and workshop equipment required
♦ Cooling system testing device , e.g. -V.A.G 1274 B-
♦ Adapter for cooling system testing device , e.g. -V.A.G 1274/8-
♦ Adapter for cooling system testing device , e.g. -V.A.G 1274/9-
Work procedure
• Engine must be warm.
– Open cap -arrow- for coolant expansion tank.
WARNING
There is risk of injury 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.
152
Rep. gr.19 - Cooling