Golf L5-2.5L (CBUA) (2010)
Thermostat: Service and Repair
Coolant Thermostat
‹› Checking the coolant thermostat, refer to - item 17 - => [ Coolant Thermostat ] See: Service and Repair/Removal and Replacement/Cooling
System Components, Engine Side.
Special tools, testers and auxiliary items required
‹› Refractometer (T10007)
‹› Drip Tray fo VAS 6100 (VAS 6208)
‹› Hose Clip Pliers (VAS 6362)
‹› Cooling System Charge Unit (VAS 6096)
‹› Adapter (V.A.G 1274/8)
Removing
CAUTION!
Hot steam may escape when opening the expansion tank cap. Wear protective goggles and protective clothing to prevent damage to eyes
and scalding. Cover the cap with a cloth and open very carefully.
-
Drain the coolant. Refer to => [ Draining and Filling ] See: Service and Repair/Procedures.
-
Remove the engine cover with air filter. Refer to => [ Engine Cover with Air Filter ] See: Engine/Tune-up and Engine Performance Checks/Air
Cleaner Housing/Service and Repair/Engine Cover With Air Filter.
-
Remove the intake manifold. Refer to => [ Intake Manifold ] See: Engine/Intake Manifold/Service and Repair/Intake Manifold.
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Install the oil dipstick guide tube in the cylinder block. Tighten it to prevent cooling from flowing into the engine.
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Place a suitable container under the coolant thermostat housing to catch coolant draining out.
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Remove the bolts - arrows -, remove the connecting piece - A - and remove the thermostat.
Installing
Installation is performed in the reverse order of removal. When doing this note the following:
‹› Replace the seal - item 18 -=> [ Seal ] See: Service and Repair/Removal and Replacement/Cooling System Components, Engine Side and O-ring -
item 16 -=> [ O-ring ] See: Service and Repair/Removal and Replacement/Cooling System Components, Engine Side.
‹› Note the installed position of the thermostat - 1 -. The valve - 2 - must point upward.