Coolant Pump and Thermostat Overview

Coolant Pump and Thermostat Overview






1 Bolt

• 9 Nm

• Tightening sequence and specification. Refer to => [ Coolant Pump Bolt Tightening Sequence and Specification ].

2 O-ring

• Always replace.

• Lubricate with coolant.

3 Connection

4 Retaining Clip

• Only with the inserted version.

• Make sure it is secure.

5 Bolt

• 4 Nm

• Only with the threaded version.

6 Retaining Plate

• Only with the threaded version.

7 Engine Coolant Temperature Sensor (G62)

• Removing and installing, refer to => [ Engine Coolant Temperature Sensor (G62) ] Service and Repair.

8 O-ring

• Always replace.

9 Coolant Pump

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

• On a new coolant pump, remove the protective cap.

10 Gasket

• Always replace.

11 Centering Pin

• Quantity: 2

12 Toothed Belt

• For the 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

• 17 Nm

• Always replace.

• Has left hand threads

16 Toothed Belt Drive Gear

• Note the installed position: The collar on the drive gear faces the transmission.

17 Seal

• Removing and installing, refer to => [ Coolant Pump Drive Gear Seal, Replacing ] Coolant Pump Drive Gear Seal, Replacing.

18 Balance Shaft

19 Coolant Thermostat

• The coolant thermostat can be checked in "Guided Fault Finding" under "Function and Component Selection".

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

20 Centering Pin

21 O-ring

• Always replace.

22 Connecting Piece

23 Bolt

• 9 Nm

Coolant Pump Bolt Tightening Sequence and Specification





Special tools, testers and auxiliary items required

• Torque Wrench (5-50 Nm) (V.A.G 1331)

Procedure

- Tighten the coolant pump bolts in sequence - 1 through 5 -.

Tightening specification: 9 Nm