volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Water Pump > < Thermostat Housing, Engine Cooling|Locations|Page 2270
Page 1
background image

Thermostat Housing: Service and Repair

Coolant thermostat housing, disassembling and assembling

Note:  Routing coolant hoses to thermostat housing, Refer to Cooling System, draining and filling.

1. O-ring

^

Replace if damaged

2. Retaining clip

^

Check seated securely

3. Thermostat housing
4. Bracket
5. 8 Nm
6. Coolant thermostat

^

Observe installation position

^

Checking: Heat up thermostat in water

^

Starts to open at approximately 80°C

^

Ends at approximately 105°C

^

Opening stroke at least 7 mm

7. Unions
8. Seal

^

Replace

9. Engine Coolant Temperature (ECT) sensor -G62-

^

For engine control module

^

With ECT sensor -G2

^

Release pressure in cooling system if necessary before removing components

^

Checking:
Refer to Powertrain Management

10. Plug

^

Release pressure in cooling system if necessary before removing components

Water Pump > < Thermostat Housing, Engine Cooling|Locations|Page 2270