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NEED A CUSTOM SOLUTION? SWAFLY supports custom development and manufacturing of various heavy-duty components, including Hydraulic Cylinders, Engine Assemblies, Pumps, and Control Valves. Contact us for bespoke parts tailored to your specific application requirements!
SWAFLY proudly supplies high-quality engineering machinery accessories, including this critical CYLINDER;BOOM for Hitachi excavators. The specific product is designed for the Hitachi ZX130-5A model, ensuring optimal performance and reliability. The full part number is YA60028505H1, which we also reference as YA60028505H1 for improved search visibility.
A Boom Cylinder is a double-acting hydraulic cylinder typically mounted on the excavator's chassis and connected to the main boom. Its function is to raise and lower the boom, controlling the primary vertical movement of the digging implement. For the Hitachi ZX130-5A, this cylinder's precision is vital for smooth and efficient operation, making it a key component in the machine's hydraulic system.
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Travel Device: Converts hydraulic power into mechanical rotation to drive the tracks. Installed on the undercarriage/track frame. Example: Hitachi ZX330-5A Travel Device.
Swing Device (Swing Gearbox): Rotates the upper structure (cab and boom) of the excavator. Installed beneath the cab/turntable. Example: Hitachi ZX240-5A Swing Device.
Piston Pump (Main Pump): Generates the high-pressure hydraulic flow to power the machine's functions. Installed in the engine compartment. Example: Hitachi ZX70-5G Piston Pump.
Control Valve (Main Control Valve): Directs hydraulic fluid to the various cylinders and motors based on operator input. Installed between the pump and the actuators. Example: Hitachi ZX870-5G CONTROL VALVE.
Track Adjuster: Maintains the correct tension of the track chain by moving the idler wheel. Installed at the front of the track frame. Example: Hitachi ZX350-5 track adjuster.
Boom Cylinder: Hydraulic actuator that lifts and lowers the boom arm. Installed between the main frame and the boom. Example: Hitachi ZX130-5A Boom Cylinder.
Arm Cylinder: Hydraulic actuator that extends and retracts the arm (dipper stick). Installed between the boom and the arm. Example: Hitachi ZX890LCH-5A ARM CYLINDER.
Bucket Cylinder: Hydraulic actuator that tilts the bucket for digging and dumping. Installed between the arm and the bucket linkage. Example: Hitachi ZX240-5A BUCKET CYLINDER.
Drive Motor (Final Drive Motor): Part of the Travel Device, provides the torque for track movement. Installed within the Travel Device assembly. Example: Hitachi ZX400LCH-5A Drive Motor.
Cab-Assy: The complete operator's cabin, providing protection and control systems. Installed on the machine's turntable. Example: Hitachi ZX850-3 CAB-ASSY.
| No. | Brand | Part Number(s) | Model | Description |
|---|---|---|---|---|
| 1 | Hitachi | 9306368 | ZX350-5 | track adjuster |
| 2 | Hitachi | YA00028290H3, YA00028291H3 | ZX890LCH-5A | CYL.;BOOM |
| 3 | Hitachi | YA00028294H3 | ZX890LCH-5A | CYL.;BUCKET |
| 4 | Hitachi | 4697128, 4697129 | ZX670LCH-5G | CYL.;BOOM |
| 5 | Hitachi | 4637751HCMC | ZX450-3 | CYL.;BOOM |
| 6 | Hitachi | YA00023611HCMC | ZX130-5A | 4JJ1XKSA03 Engine |
| 7 | Hitachi | 9323701HCMC, 9323702HCMC | ZX160-5B | CYL.;BOOM |
| 8 | Hitachi | 9261222, 9289617 | ZX200-5A, ZX130-5A | TRAVEL-DEVICE |
| 9 | Hitachi | YA00000721H3 | ZX280-5G/300-5A | VALVE;CONTROL |
| 10 | Hitachi | 4680289 | ZX850-3 | CAB-ASSY |
Problem:
The engine of a Komatsu PC300-8 excavator is frequently overheating, especially during heavy load operation (e.g., deep digging or long travel). This can lead to engine shutdown and potential component damage, such as cylinder head warping.
Solution/Action Plan:
Check Coolant Level and Condition: Ensure the coolant reservoir is topped up and that the fluid is clean and free of oil contamination. A low level is the most common cause.
Inspect Radiator and Oil Cooler: Visually check for external debris buildup (dirt, leaves) blocking airflow through the fins. Clean thoroughly with compressed air or water (from the back). Internally, check for blockages or corrosion.
Verify Fan Operation: Ensure the cooling fan clutch engages properly and the fan blades are intact. For hydraulic fans, check the fan motor speed and control circuit.
Thermostat and Water Pump: A stuck thermostat can prevent coolant circulation. Test or replace the thermostat. Inspect the water pump for leaks or impeller damage.
Monitor Gauge: Confirm the temperature gauge is accurate and that overheating is not a false reading.
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