Essential Diesel & Machinery Component Definitions

• Hydraulic Pump: Location: Hydraulic System. Function: Converts mechanical energy into hydraulic energy. Example: Caterpillar 345D Hydraulic Pump.

• Fuel Injector: Location: Cylinder Head/Combustion Chamber. Function: Sprays precise amount of fuel into the engine. Example: Cummins ISX 15 Fuel Injector.

• Brake Caliper: Location: Wheel Assembly. Function: Holds brake pads and squeezes them against the rotor to slow the vehicle. Example: Volvo FH16 Brake Caliper.

• Radiator Core: Location: Cooling System. Function: Transfers heat from the engine coolant to the ambient air. Example: Komatsu PC200-8 Radiator Core.

• Steering Knuckle: Location: Suspension/Steering System. Function: Connects the wheel hub to the suspension components. Example: Ford F-150 Steering Knuckle.

• Differential Gear Set: Location: Axle Assembly. Function: Allows the wheels on the same axle to rotate at different speeds during turns. Example: John Deere 8320R Differential Gear Set.

• Water Pump Impeller: Location: Cooling System. Function: Circulates coolant through the engine and radiator. Example: Mitsubishi Fuso 6M60 Water Pump Impeller.

• Torque Converter: Location: Transmission/Drivetrain. Function: Transfers rotational power from the engine to the transmission. Example: Hyundai HL955 Torque Converter.

• EGR Valve (Exhaust Gas Recirculation Valve): Location: Intake Manifold. Function: Recirculates a portion of the exhaust gas back to the engine cylinders to reduce NOx emissions. Example: Detroit Diesel DD15 EGR Valve.

• Track Roller (Bottom Roller): Location: Undercarriage. Function: Supports the weight of the machine and guides the track link assembly. Example: Hitachi ZX330 Track Roller.