Understanding Key Components: A Glossary from Growshine

• Fuse Box (保险丝盒): An enclosure in the electrical system of a vehicle or machine that houses fuses. It protects electrical circuits from overcurrent by blowing a fuse, thereby preventing damage to components. For example, the Caterpillar E320D Fuse Box Harness (259-5296HH02, 2595296HH02) is installed in the cab or engine compartment of a Caterpillar E320D excavator to protect its electronic injection system.
  Например, блок предохранителей Caterpillar E320D (259-5296HH02, 2595296HH02) устанавливается в кабине или моторном отсеке экскаватора Caterpillar E320D для защиты его системы электронного впрыска.
  For example, the Caterpillar E320D fuse box (259-5296HH02, 2595296HH02) is installed in the cab or engine compartment of a Caterpillar E320D excavator to protect its electronic injection system.
• Wire Harness (线束): A bundle of wires, cables, and connectors that transmit electrical signals and power throughout a vehicle or machine. For example, the Volvo EC290B EC210B Excavator Fuse Box Harness (14571637, 14535882) connects various electrical components in the Volvo EC290B excavator.
• Relay (继电器): An electrically operated switch that uses a small current to control a larger current, often used in vehicles for high-current applications like starting motors or headlights. A Volvo Excavator VOE200D Fuse Box Relay Resistor (14726295) would be found within the electrical system of a Volvo EC200D excavator.
• Fuse (保险片/保险丝): A safety device consisting of a metal wire or strip that melts and breaks an electric circuit if the current exceeds a safe level. A Shantui Dozer Fuse Blade (D2773-02000, D277302000) is used in the Shantui SD16 dozer's fuse box.
• Electrical Central Control Box (电器集中控制盒): A centralized unit that integrates and controls multiple electrical functions and components within a machine. The LiuGong 46C8384 is an example, found in LiuGong loaders and excavators.
• Throttle Motor (油门马达): An electric motor that controls the engine's throttle, regulating fuel intake and engine speed. It's an integral part of the engine control system in excavators like the Komatsu PC200-6.
• Oil Pump (机油泵): A component responsible for circulating lubricating oil throughout the engine to reduce friction and heat. Found in the engine bay, for example, of a Komatsu PC200-6 4HK1 excavator.
• Fan Bracket (风扇托架): A support structure for the engine's cooling fan, ensuring it's securely mounted and properly aligned. Typically located near the radiator and engine, such as on a Komatsu PC200-6 excavator.
• Preheat Relay (预热继电器): A relay used in diesel engines to control the glow plugs, which preheat the combustion chambers for easier starting in cold weather. An Hitachi Excavator Preheat Relay (4251588) is found in Hitachi EX200-5 excavators.
• Selector (择档器): A mechanism that allows the operator to select different gears or modes of operation in heavy machinery. For example, the XCMG ZL50 Gear Selector is found in the cab of the XCMG ZL50 loader.