2. unscrew clamp (indicated by an arrow) and remove the air supply tube from the filter housing cover.
3. Disconnect the brackets and remove the filter housing cover.
4. Remove filter element and filter housing.
Inlet air temperature control system
Hot air intake plate on exhaust manifold
Cold air comes from the air intake from the front panel, and hot air comes from the intake plate on the exhaust manifold. These two air streams go to the thermostat.
Thermostat with solid filler on the air duct
When the engine is running in cold weather, the thermostat closes the flow of cold air and opens the flow of hot air from the manifold.
As the intake air from the exhaust manifold becomes warmer, the thermostat gradually closes off the warm air duct and opens the cold air duct.