Thermostat: Service and Repair

4/2-Way Valve with Coolant Thermostat

Removing

Special tools, testers and auxiliary items required

• Jointed Bit (XZN 8) (T10445)

• The thermostat is inside the 4/2-way valve and cannot be replaced separately.

- Drain the coolant. Refer to => [ Coolant, Draining and Filling ] Procedures.

- Remove the generator.

- Remove the throttle valve control module. Refer to => [ Intake Manifold and Attachments Overview ] Intake Manifold and Attachments Overview.

- Remove the coolant hoses from the connections - A, B and D -.

- Loosen the bolt for the coolant pipe behind the oil filter a few turns. Use the jointed bit (XZN 8) (T10445).

- Remove the coolant pipe from the connection - C -.






- Remove the bolts - 3 - for the 4/2-way valve - 2 -.

- Pull the valve out of the cylinder block and then to the left in order to remove the connection - C - from the coolant pipe.

Installing

• Always replace gaskets and seals.

- First, attach the 4/2-way valve and the connection - C - to the coolant pipe and then install them in the cylinder block.

- Install the bolts - 3 - and tighten them to 15 Nm.






- Connect the coolant hoses as follows:

• - A -: Bypass line to the cylinder head

• - B -: Expansion tank

• - D -: Radiator return line

- Tighten the bolt on the coolant pipe behind the oil filter. Use the jointed bit (XZN 8) (T10445). Tightening specification: 10 Nm.

- Fill the coolant system. Refer to => [ Coolant, Draining and Filling ] Procedures.

- Install the throttle valve control module. Refer to => [ Intake Manifold and Attachments Overview ] Intake Manifold and Attachments Overview.

- Install the generator.