Skoda Octavia 1996 Service Manual page 98

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Cooling System
Testing cooling system for leaks
Special tools, testers and aids required
♦ Cooling system tester
(e.g. V.A.G 1274)
♦ Adapter (e.g. V.A.G 1274/8)
♦ Adapter (e.g. V.A.G 1274/9)
Test condition
l Engine at operating temperature
Test procedure
Important!
Hot steam may escape when the expansion
reservoir is opened. Cover over cap with a cloth
and open carefully.
- Open cap of coolant expansion reservoir.
K - Fit tester V.A.G 1274 with adapter V.A.G
1274/8 onto the expansion reservoir.
- Operate priming pump of tester to produce
a pressure of about 0.1 MPa.
- If the pressure drops, determine the leakage
point and rectify.
Testing pressure relief valve in cap
- Screw cap onto the tester with adapter V.A.G
1274/9.
- Operate priming pump of tester to produce
a pressure of about 0.15 MPa.
- The pressure relief valve should open at a
pressure of 0.12 ... 0.15 MPa.
OCTAVIA
Edition 05.97
S00.5105.51.20