Thermostat: Service and Repair

Coolant Pump and Coolant Thermostat Overview






1 Coolant Thermostat with Connection

• Removing and installing, refer to => [ Connecting Piece with Coolant Thermostat ] Service and Repair

2 Coolant Hose

• From the radiator at the bottom and on the right side

3 Bolt

• 9 Nm

4 Coolant Hose

• To the left top coolant pipe

5 Coolant Hose

• From the Exhaust Gas Recirculation (EGR) cooler pump (V400)

6 Coolant Thermostat for the Exhaust Gas Recirculation with Connection

• Removing and installing, refer to => [ Exhaust Gas Recirculation Coolant Thermostat and Connection ] Removal and Replacement

7 O-ring

• Replace

8 Seal

• Replace

9 Bolt

• 9 Nm

10 Coolant Pump

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

11 Bolt

• Tightening specification and sequence => [ Coolant Pump - Tightening Specification and Sequence ]

12 Ribbed Belt Pulley for Coolant Pump

• Installation position: the word "vorne" (front) faces the direction of travel

13 Bolt

• 23 Nm

Coolant Pump - Tightening Specification and Sequence





- Tighten the coolant pump bolts - arrow - in a diagonal sequence in stages to 9 Nm.

Vehicles Built through 05.10 Fuel Cooler Pump (V166) , Tightening Specifications





- Tighten the fuel cooler pump bracket bolt - arrow - to 23 Nm.