Coolant Thermostat

Coolant Thermostat

Removing

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

- Remove the bolt - 1 - from below.






• Ignore items - 2, 3 and 4 and the arrow -.

- Remove the bolts - arrows - and air guide.






- Remove both the lower air guide and the air guide hose.

- Disconnect the electrical connectors - arrow - and free up the electrical wire.






- Loosen the hose clamp - 2 - from above.

- Remove the bolt - 4 - and the air guide pipe.

• Ignore - 1 and 3 -.

- Free up the coolant hose - 2 - and electrical wiring harness - 1 -.






- Remove the bolt - arrow - and remove the bracket.

- Remove the bolt - 2 - on the bracket for the after-run coolant pump (V51).






• The after-run coolant pump stays in the installation position.

• Ignore - 1 and arrows -.

- Remove the coolant hoses - 1 and 2 - and lay them aside.






- Remove the bolts - 1 through 9 - and remove the oil separator.






- Loosen the nut - 2 -, remove the bolt - 1 - and move the support for the intake manifold to the right.






- Remove bolts - arrows - and remove connecting pieces.






- Remove the coolant thermostat.

Installing

• For the correct tightening specifications, refer to => [ Coolant Pump and Thermostat Overview ] Coolant Pump and Thermostat Overview.

Installation is carried out in the reverse order while noting the following:

• Replace the seals and the O-rings.

• The hose supports, air guide pipes and hoses must be free of oil and grease before installing.

• Secure all hose connections with hose clamps of the same type as those equipped by the factory. Refer to the Electronic Parts Catalog (ETKA).

• To mount the charge hoses on their connectors securely, spray the bolts on the used clamps with rust remover before installing.

- Clean O-ring sealing surface.

- Coat the O-ring with coolant; coolant, refer to the Electronic Parts Catalog (ETKA).

- Install the thermostat - 4 - into the housing - 5 - for the coolant pump and move it slightly forward - arrow -.






- Carefully mount the connector - 3 -; while doing this, insert the centering pin - 2 - into the guide - 1 -.

- Install the oil separator. Refer to => [ Oil Separator ] Service and Repair.

- Install the intake manifold support.

- Install the after-run coolant pump. Refer to => [ After-Run Coolant Pump (V51) ] After-Run Coolant Pump (V51).

- Air guides, installing with connector. Refer to => [ Air Guide Pipes and Hoses with Connector Coupling ] Service and Repair

- Fill the coolant system. Refer to => [ Filling: ] Service and Repair.