Volkswagen Golf Service & Repair Manual: Checking cooling system for leaks
| Special tools and workshop equipment
required |
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| Cooling system tester -V.A.G 1274 B- |
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| Adapter for cooling system tester -V.A.G 1274/8- |
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| Adapter for cooling system tester -V.A.G 1274/9- |
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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. |
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Fit cooling system tester -V.A.G 1274 B- with adapter -V.A.G 1274/8-
on coolant expansion tank. |
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Using hand pump on tester, build up a pressure of approx.
1.0 bar. |
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If this pressure is not maintained, locate and rectify
leaks. |
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| Checking pressure relief valve in filler cap |
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Place cooling system tester -V.A.G 1274 B- with adapter -V.A.G 1274/9-
on filler cap. |
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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. |
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Special tools and workshop equipment required
Refractometer -T10007 A-
Drip tray for workshop hoist -VAS 6208-
Hose clip pliers -VAS 634 ...
Other materials:
Rear brakes
The type of brake system installed in the vehicle is
indicated among other things by the corresponding PR number on
the vehicle data sticker.
The vehicle data sticker can be found in the spare wheel
well and in the service schedule.
...
Effects on metal
In its pure state, refrigerant R134a is chemically stable
and does not attack iron or aluminium.
However, impurities such as chlorine compounds in the
refrigerant do attack certain metals and plastics. This can lead
to blockages, leaks a ...
Removing and installing light conductor for front sill panel moulding
ambient lighting -W67-/-W68
Note
The light conductors for front sill panel moulding ambient
lighting -W67-/-W68- are integrated into the sill panel
mouldings and cannot be renewed individually.
If the light conductor for front sill panel mouldi ...
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Draining and filling coolant