Thermostat: Service and Repair

Thermostat-6.0L Diesel

Removal and Installation
1. Drain the cooling system.





2. Remove the push pin retainers and upper air deflector.





3. Remove the bolts for the power steering reservoir bracket.





4. Remove the bolts and power steering fluid indicator. Remove the power steering reservoir mounting bracket. Install the power steering fluid indicator and position aside.





5. Disconnect the coolant hoses from the air cleaner outlet tube.





6. NOTE: Air cleaner side shown, other side similar.

Loosen the clamps and remove the air cleaner outlet tube.





7. Loosen the clamps and remove the charge air pipe.





8. Disconnect and position the upper radiator hose aside.





9. Remove the retaining nut and position the fuel line retainer aside.





10. Remove the stud bolts and thermostat assembly.
^ Remove and discard the O-ring seal.
11. To install, reverse the removal procedure.
^ Install a new O-ring seal on the thermostat assembly.