Using cooling system tester -V.A.G 1274 B- with adapters -V.A.G 1274/8- and -V.A.G 1274/9-, this page covers pressure-testing the Volkswagen Golf Mk7 cooling system for leaks.
| Special tools and workshop equipment
required |
|
|
|
| Cooling system tester -V.A.G 1274 B- |
|
|
|
| Adapter for cooling system tester -V.A.G 1274/8- |
|
|
|
| Adapter for cooling system tester -V.A.G 1274/9- |
|
|
|
| – |
Open cap -arrow- on coolant
expansion tank. |
| Engine at operating temperature. |
The cooling system is under pressure when the engine is hot. Hot
steam/hot coolant can escape - risk of scalding. Risk of scalding to
skin and body parts.Wear protective gloves.Wear eye protection.Release
pressure by covering cap of coolant expansion tank with a cloth and
opening it carefully. |
|
|
| – |
Fit cooling system tester -V.A.G 1274 B- with adapter -V.A.G 1274/8-
on coolant expansion tank. |
| – |
Using hand pump on tester, build up a pressure of approx.
1.0 bar. |
| – |
If this pressure is not maintained, locate and rectify
leaks. |
|
|
|
| Checking pressure relief valve in filler cap |
| – |
Place cooling system tester -V.A.G 1274 B- with adapter -V.A.G 1274/9-
on filler cap. |
| – |
Build up pressure using hand pump of cooling system tester. |
| The pressure relief valve must open at a pressure of
1.6…1.8 bar. |
|
|
|
Questions & answers
Checking cooling system for leaks — Volkswagen Golf Mk7
How do I check the Golf Mk7 1.4 TSI cooling system for leaks?
Fit a pressure tester to the expansion tank, pump to the specified pressure and observe. A falling gauge indicates a leak. Inspect all hoses and connections.
Special tools and workshop equipment required
Refractometer -T10007 A-
Drip tray for workshop hoist -VAS 6208-
Hose clip pliers -VAS 634 ...
