The Komatsu 4D84 is a diesel engine commonly used in compact construction equipment, such as excavators, loaders, and backhoe loaders. Known for its reliability and efficiency, it's a popular choice in the industry.
Key Specifications:
Number of cylinders 4
Displacement 2.2 liters
Layout Inline
Bore 84 mm
Applications:
Beyond the Komatsu PC40 excavator, the 4D84 engine is also found in other Komatsu models and equipment from other manufacturers. Its compact size and performance make it suitable for a variety of applications.
Maintenance and Care:
Proper maintenance is crucial for the longevity of any engine. Here are some essential tips for maintaining your 4D84:
Regular oil changes Use the recommended oil type and change it according to the service manual.
Filter replacements Replace air, fuel, and oil filters as scheduled.
Coolant checks Monitor coolant levels and condition.
Engine inspections Regularly inspect for leaks, hoses, belts, and other components.
Overheating prevention Avoid overloading the engine and ensure proper cooling system function.
Common Issues and Troubleshooting：
While the 4D84 is generally reliable, issues can arise. Some common problems include：
Engine won't start Check fuel supply, battery, starter, and ignition system.
Lack of power Inspect fuel system, air filter, and turbocharger.
Excessive smoke Could indicate issues with fuel injection, combustion, or engine wear.
Overheating Check coolant levels, thermostat, radiator, and water pump.
If you're experiencing specific problems with your 4D84 engine, please provide more details so I can offer tailored advice.
Would you like to know more about specific maintenance procedures, troubleshooting steps, or performance optimization for the 4D84 engine？
KELUO manufactures excavator air-cooled and water-cooled engines and engine accessories, KELUO also manufactures excavator main pumps, we provide power for excavators.
