What is the reason for the lack of power in Komatsu 56 walking?
2 Answers
Komatsu 56 walking lacks power due to hydraulic pump failure. Hydraulic pump: The hydraulic pump is the power component of the hydraulic system. It is driven by an engine or motor, sucks oil from the hydraulic tank, forms pressurized oil, and discharges it to the actuator. Hydraulic pumps are structurally classified into gear pumps, piston pumps, vane pumps, and screw pumps. Maintenance of hydraulic pump: The water pipeline must be highly sealed. The pump is prohibited from working under cavitation conditions. Regularly check whether the motor is operating with overcurrent during pump operation. The bearings should be lubricated every 500 hours of pump operation. For motors with a power greater than 11kw equipped with a lubrication device, a high-pressure oil gun can be used to directly inject oil to ensure excellent bearing lubrication.
I have been operating a small construction team for many years, often working with the Komatsu PC56. If the machine lacks power in movement, the issue might lie in the hydraulic system. Insufficient hydraulic oil or a clogged filter can lead to reduced oil pressure, preventing the travel motor from delivering full power. It could also be a transmission problem, such as a slipping torque converter or contaminated oil, affecting transmission efficiency. Once, my machine had air bubbles in the hydraulic lines, resulting in weak power, and upon inspection, a leak was found. Additionally, insufficient engine output can be a cause, where a clogged air filter restricts airflow or a dirty fuel system impacts power delivery. Regular maintenance is key—I make it a habit to change the oil and filters monthly to prevent failures. If any abnormalities are detected, it's best to stop and inspect to avoid damaging more components.
