Coolant Pump and Thermostat Overview

Coolant Pump and Thermostat Overview






1 Bolt

• Tightening order, refer to => [ Ribbed Belt Drive and Accessory Assembly Bracket, Assembly Overview ] Ribbed Belt Drive and Accessory Assembly Bracket, Assembly Overview

2 O-rings

• Replace

3 Connection

4 Retaining Clip

• Only with the inserted version

• Ensure seated tightly

5 Bolt

• 4 Nm

• Only with the threaded version

6 Retaining Plate

• Only with the threaded version

7 Engine Coolant Temperature (ECT) Sensor (G62)

• Removing and installing, refer to => [ Engine Coolant Temperature Sensor ] Service and Repair

8 O-ring

• Replace

9 Coolant Pump

• Removing and installing, refer to => [ Coolant Pump ] Coolant Pump

• With a new coolant pump, remove the protective cap

10 Gasket

• Replace

11 Centering Pin

• 2 pieces

12 Toothed Belt

• For coolant pump

• Removing and installing, refer to => [ Coolant Pump Toothed Belt ] Coolant Pump Toothed Belt

13 Toothed Belt Guard

14 Bolt

• 9 Nm

15 Bolt

• Replace

• 10 Nm plus an additional 90° turn

• Left thread

16 Toothed Belt Drive Gear

• Note installation position

17 Shaft Seal

• Replacing, refer to => [ Coolant Pump Drive Shaft Seal ] Coolant Pump Drive Shaft Seal.

18 Balance Shaft

19 Coolant Thermostat

• Removing and installing, refer to => [ Coolant Thermostat ] Coolant Thermostat

20 Centering Pin

21 O-ring

• Replace

22 Connecting Piece

23 Bolt

• 9 Nm

Coolant Pump Tightening Sequence





- Tighten the coolant pump bolts to 9 Nm in a - 1 to 5 - sequence.