7.3L Power Stroke – THERMOSTAT – Installation

1. Use a NEW “O” ring seal to position the water thermostat in the upper intake manifold.
2. Install the thermostat housing. See Fig. 131. Install the thermostat housing bolts. Tighten thermostat housing              bolts to specification. See TORQUE SPECIFICATIONS.
3. Connect the upper radiator hose to the thermostat housing. Fill and bleed the cooling system. See COOLING                SYSTEM BLEEDING.