VW Golf manuals

Volkswagen Golf Service & Repair Manual: Checking cooling system for leaks

Special tools and workshop equipment required
   
Cooling system tester -V.A.G 1274 B-
 

Checking cooling system for leaks

Adapter for cooling system tester -V.A.G 1274/8-
 

Checking cooling system for leaks

Adapter for cooling system tester -V.A.G 1274/9-
Procedure
 

Checking cooling system for leaks

–  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.
 

Checking cooling system for leaks

–  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 cooling system for 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.
 

Checking cooling system for leaks

Draining and filling coolant
Special tools and workshop equipment required Refractometer -T10007 A- Drip tray for workshop hoist -VAS 6208- Hose clip pliers -VAS 634 ...

Coolant pump, regulation of cooling system
...

Other materials:

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Removing and installing door inner seal
During production, a sealant is applied to the door inner seals, which are then placed on the door flange and rolled on.   Note When removing the seal, the sealant is distributed across the inside of the seal. The sides are bent upwards ...

Mounting front seat on seat repair stand
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