Engineering Machinery Parts Glossary

Understanding the components of your machinery is crucial for maintenance and repair. Here are some key parts explained:

• Oil Pressure Switch (零件号: 174-4312)

  (Chinese: 油压开关) - A sensor that monitors the engine oil pressure. Located on the engine block or oil filter housing. Example: Caterpillar CAT 3406 Engine.

• Coolant Flow Switch (零件号: 171-8708)

  (Chinese: 冷却液流量开关) - Detects the flow of coolant in the engine cooling system. Typically installed in coolant lines. Example: Caterpillar CAT 3516B Engine.

• Oil Cooler Core Assembly (零件号: 418-7961)

  (Chinese: 机油冷却器芯体总成) -  Part of the oil cooler, responsible for dissipating heat from the engine oil. Located near the engine oil filter or radiator. Example: Caterpillar CAT C4.4 Engine.

• Sun Gear (零件号: 333-2990)

  (Chinese: 太阳轮) - A central gear in a planetary gear set, often found in transmissions and final drives. Located inside the transmission or final drive housing. Example: Caterpillar CAT C7.1 Engine.

• Disc Plate (零件号: 8U-5988)

  (Chinese: 摩擦片) - A component in braking or clutch systems, providing friction. Found in brake assemblies or clutches. Example: Caterpillar CAT 206B Excavator.

• Travel Motor Planet Gear (零件号: 096-4320)

  (Chinese: 行走马达行星齿轮) - A gear within the travel motor that helps reduce speed and increase torque for excavator movement. Inside the travel motor assembly. Example: Caterpillar CAT 3116 Excavator.

• Intercooler Hose (零件号: 265-3662)

  (Chinese: 中冷器软管) - A hose that carries air cooled by the intercooler to the engine intake. Connects the intercooler to the intake manifold. Example: Caterpillar CAT 312D Excavator.

• Bucket Cylinder Seal Kit (零件号: 7Y-5145)

  (Chinese: 铲斗油缸密封套件) - A set of seals to prevent hydraulic fluid leakage in the bucket cylinder. Installed within the bucket cylinder assembly. Example: Caterpillar CAT 3306 Excavator.

• Fuel Filter Base Assembly (零件号: 177-9778)

  (Chinese: 燃油滤清器底座总成) - The mounting base for the fuel filter, often including valves and connections. Located in the fuel line, typically near the engine. Example: Caterpillar CAT 3306B Engine.

• Planetary Gear (零件号: 7Y-1431)

  (Chinese: 行星齿轮) - Gears that orbit the sun gear in a planetary gear set, contributing to speed and torque changes. Located within planetary gear systems. Example: Caterpillar CAT 3126 Engine.