• Oil is drawn from the oil pan through the pickup tube. The oil is then routed through a passage cast into the upper oil pan then to the oil pump inlet. • From the oil pump, oil is directed to the oil cooler and then to the oil filter. • The main… Read More »
Both cooling systems use unique quick-connect fittings on the larger coolant hoses and standard style clamps on the smaller hoses.
The coolers that are located at the front of the grille opening include: • primary radiator. • secondary radiator. • air conditioning condenser. • power steering cooler. The secondary radiator is located in front of the primary radiator to allow the powertrain secondary cooling system to operate at a lower temperature than the primary cooling… Read More »
The engine cooling fan is an electro-viscous design. The engine cooling fan clutch is electronically controlled by the PCM, based on input information received from various engine sensors. The PCM provides a Pulse Width Modulated (PWM) signal to the fan clutch and monitors fan speed through the Fan Speed Sensor (FSS).
The engine block heater is located on the right side of the engine block. The block heater uses 110V AC to heat the engine coolant in cold weather climates. Use the engine block heater must be used whenever ambient temperatures are at or below -23°C (-9°F). The engine block heater is standard on every engine.… Read More »
The secondary coolant pump is located on the right front of the engine.
The high temperature thermostat is located on the right side of the secondary radiator and regulates the upper radiator temperature to approximately 60°C (140°F). The low temperature thermostat is located on the left side of the secondary radiator and regulates the lower radiator temperature to approximately 45°C (113°F).
The fuel cooler is located on the left frame rail between the engine and the Diesel Fuel Conditioning Module (DFCM). It cools the return fuel before it is sent to the DFCM.
The transmission cooler for the 6R140 transmission is located on the right front inner frame rail.
The ECT2 sensor is located in the powertrain secondary cooling system part of the EGR cooler, just after the coolant inlet.