F 450 2WD Super Duty V8-6.4L DSL Turbo (2008)
Removal
NOTE: Removal of the vertical EGR cooler is not required to service the thermostats.
1. Remove the upper cooling fan shroud.
2. Remove the degas bottle.
3. Using a mirror, find the end of the upper radiator hose spring clip. Remove the spring clip, disconnect the upper radiator hose from the thermostat
housing and position the upper radiator hose aside.
4. Remove and discard the nut and the vertical EGR cooler lower clamp.
5. Remove the bolt and the vertical EGR cooler lower bracket.
6. NOTE: The 6.4L diesel engine uses 2 thermostats.
Remove the bolts, the collar and the thermostat housing.
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Lift the bottom of the collar up and rotate toward the engine to remove.
7. CAUTION: If the thermostats are contaminated with engine oil, new thermostats must be installed. Reusing a thermostat that has been
exposed to engine oil may result in engine overheating.
Remove the thermostats and the gasket from the thermostat housing.
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Discard the gasket.
Installation
1. Install a new gasket and the thermostats into the thermostat housing.
2. Install the thermostat housing, the collar and the bolts.
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Tighten to 13 Nm (10 lb-ft).
3. Position the lower vertical EGR cooler bracket and loosely install the bolt.
4. Install a new vertical EGR cooler lower clamp. Tighten the clamp nut in 3 stages.
