Mercedes-Benz Truck 2000-05
Removal & Installation
Before servicing the vehicle, refer to the Precautions section.
Drain the engine coolant.
Detach the cooling hose from the thermostat housing.
Remove the bolts securing the thermostat housing, then remove it and the thermostat from the engine.
Installation is the reverse of removal. Tighten the thermostat housing bolts to 10 ft. lbs. (14 Nm) on M112 engines and 7 ft. lbs. (10 Nm) on M1113 engines.
Fig. Exploded view of the thermostat housing