1.1 Overview • In the exhaust gas recirculation system, the engine electronic control unit and multiple electronic drive units control the exhaust gas recirculation valve and intake throttle in accordance with information from sensors on various aspects of the engine (engine speed, intake air quantity, coolant temperature, throttle opening, etc.). • Exhaust gas recirculation involves… Read More »
Installation procedure • Installation: Rear oxidation catalyst – Screw the nut A onto the shorter threaded side of the stud bolt until it cannot be turned any more. – Insert the stud bolt with nut A attached into position from the diesel particulate filter side. Fit the gasket and the rear catalyst and tighten the… Read More »
Inspection procedure Inspection: Pressure pipe and pressure hose • Check the pressure pipe and hose for clogging by blowing compressed air into the pipe and hose. Inspection: Diesel particulate filter • Check the exhaust passage inside the diesel particulate filter for adhesion of soot in large quantity. • If large amounts of soot are found,… Read More »
Removal procedure Removal: Exhaust shutter • Attach to the power chamber of the exhaust shutter. • Apply some load to the exhaust shutter using to remove the shutter. Installation procedure Installation: Exhaust shutter • Attach to the power chamber of the exhaust shutter. • Apply some load to the exhaust shutter using to install the… Read More »
Installation procedure Installation: Gasket • Install the gasket on the cylinder head in the illustrated direction.
Inspection procedure Inspection: Intake air temperature sensor 2 • Check that the sensor portion is free of soot, oily substance, etc. • If necessary, clean the sensor portion as follows. • Spray a cleaner on the sensor portion from 2 to 3 cm away. Recommended cleaners: Nonchlorinated solvent. • In 20 to 30 seconds after… Read More »
Inspection procedure Inspection: Air leakage from intercooler • Plug one of the air ports of the intercooler and immerse it in a tank of water. Apply the specified air pressure to the intercooler through the other air port and retain pressure for 30 seconds. • Replace the intercooler if any air leakage is evident. Installation… Read More »
Installation sequence Follow the removal sequence in reverse. • After installation, measure and adjust the boost pressure. (See “ON-VEHICLE INSPECTION AND ADJUSTMENT”.) Installation procedure •Installation: Turbocharger Before installing the turbocharger assembly, pour engine oil into the oil hole to ensure smooth operation of the internal parts. Installation: Air inlet hose • Fit the air inlet… Read More »
Assembly sequence Follow the disassembly sequence in reverse. Cleaning, inspection procedure Cleaning: Element • Blow a jet of compressed air at a pressure not higher than 685 kPa {7 kgf/cm2} against the inside surfaces of the element. • Move the compressed air jet up and down along all pleats of the filter paper element. Inspection:… Read More »