Assembly overview - coolant pump, thermostat

1 -	Thermostat housing

Removing and installing → Chapter

2 -	Thermostat

For small cooling circuit

Starts to open at approx. 105 °C

Different versions. Refer to → Electronic Parts Catalogue.

Removing and installing → Chapter

3 -

Gasket

Renew

4 -	Coolant pump

Removing and installing → Chapter

Renew toothed belt as well when renewing coolant pump

5 -

Bolt

Thread-forming

Fit and screw in bolt by hand so that it screws into old thread Then tighten bolt to specified torque

Specified torque and tightening sequence → Fig.

6 -

Gasket

Renew

Ensure proper seating of seal

Lightly coat with coolant before installing.

7 -	Toothed belt guard

For toothed belt for coolant pump

8 -

Bolt

Renew

20 N·m + 90°

9 -

O-ring

Renew

Only installed in vehicles with engine codes CPTA, CZEA

Removing and installing → Chapter

10 -	Toothed belt

For coolant pump.

Renew toothed belt after coolant pump has been removed

11 -	Toothed belt pulley

For coolant pump.

Removing and installing → Chapter

12 -

Bolt

8 N·m

13 -

Bolt

Thread-forming

Fit and screw in bolt by hand so that it screws into old thread Then tighten bolt to torque

Specified torque and tightening sequence → Fig.

14 -

Cover

For thermostat

15 -

Gasket

Renew

16 -	Thermostat

For large cooling circuit

Up to 11.2012: Starts to open at approx. 80 °C

As of 11.2012: Starts to open at approx. 87 °C

Removing and installing → Chapter

Installation position → Fig.

17 -

Bolt

Specified torque and tightening sequence → Anchor

Installation position of thermostat for large cooling circuit Must be positioned with centring pin in guide -arrow- in thermostat housing.

Thermostat housing to coolant pump - tightening torque and sequence Tighten bolts in the sequence -A ... F- to 8 N·m.

Cover for thermostat to thermostat housing - tightening torque Tighten bolts for cover -1- in the sequence -A ... D- to 8 N·m.