Coolant Thermostat

Coolant Thermostat

Removing






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

- Remove the cover for the air guide; to do this, disengage the side clips - arrows -.

- Unclip the lower air guide, to do this, disengage the clips - arrows -.






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

- Loosen the hose clamp - 2 -.






- Remove the bolt - 4 -.

- Disconnect the connector - arrow -.

- Remove the bolt - 1 - and remove the air guide pipe downward.

• Ignore - 3 -.

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






- Remove the bolt - arrow - and remove 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.







Risk of contaminating lubricating system.

• Seal the opening with a clean cloth.

- 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

• Tightening specifications, refer to => [ Coolant Pump and Thermostat Overview ] Coolant Pump and Thermostat Overview.

Install in reverse order of removal. Note the following:

• Replace the seals and the O-rings.

- Clean the surface on the O-ring.

- Coat the O-ring with coolant; coolant, refer to the Parts Catalog.

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

- Air Guides, Installing with Connector => [ Hose Connections with Connector Couplings, Assembling ] Service and Repair

- Connect the coolant hose to the coupling. Refer to => [ Connect the Coolant Hose to the Coupling ] Radiator and Coolant Fan Overview.

- Fill with coolant => [ Filling ] Service and Repair.