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| Brand | Part Name | Part Number (Includes non-symbol variant) |
|---|---|---|
| Caterpillar | Fuel Injector | 3G-2720, 3G2720 |
| Cummins | Oil Pump | 4939585 |
| Komatsu | Hydraulic Pump Assembly | 708-2L-00460, 7082L00460 |
| Volvo | Engine Gasket Kit | 276940 |
| Hitachi | Swing Motor Seal Kit | 44309-02, 4430902 |
| Handok | Main Pump Regulator | H-PVK-2B-505, HPVK2B505 |
| Perkins | Water Pump | 145017730 |
Construction Machinery Parts Glossary
Cummins 6BTAA Engine Turbocharger: This part is an air compressor that uses exhaust gases to spin a turbine, forcing more air into the engine cylinders. It is located on the engine exhaust manifold. Example: Used on a Cummins 6BTAA engine, commonly found in medium-duty trucks and construction equipment.
Komatsu PC200-8 Hydraulic Filter: This component removes contaminants from the hydraulic oil, protecting the pump, valves, and cylinders. It is located within the hydraulic system, often near the hydraulic tank or in the return line. Example: Critical for the Komatsu PC200-8 Excavator hydraulic system.
Caterpillar 3306 Engine Piston Ring: A set of metallic rings fitted in grooves on the piston. They seal the combustion chamber, transfer heat from the piston to the cylinder wall, and control oil consumption. They are located on the piston, inside the engine cylinder. Example: Essential for a Caterpillar 3306 Engine rebuild.
Isuzu 4HK1 Diesel Particulate Filter (DPF): A device designed to remove diesel particulate matter (soot) from the exhaust gas. It is located in the exhaust system, after the turbocharger. Example: A key emissions component on the Isuzu 4HK1 engine used in many excavators and trucks.
Kubota V2403 Water Pump: This pump circulates coolant (antifreeze) throughout the engine to maintain a stable operating temperature. It is located on the front of the engine block, driven by a belt. Example: Found on the Kubota V2403 engine, popular in mini-excavators and skid steers.
Yanmar 4TNV98 Glow Plug: A heating element used to aid starting a diesel engine in cold conditions. It is located in the cylinder head, with the tip inside the pre-combustion chamber. Example: Used in the Yanmar 4TNV98 engine.
Weichai WP10 Fuel Injector: This part delivers a fine, atomized spray of fuel directly into the engine cylinder at high pressure for combustion. It is mounted in the cylinder head. Example: A precision component for the Weichai WP10 marine or construction engine.
Caterpillar D6R Track Shoe: One of the individual plates that form the track chain (track) of a bulldozer or excavator, providing traction and distributing the machines weight. It is located on the undercarriage assembly. Example: A common wear part for a Caterpillar D6R Bulldozer.
Komatsu WA380 Bucket Tooth: A replaceable hardened steel tip attached to the cutting edge of a loaders bucket. It is the first point of contact for digging and penetration. It is located on the front edge of the loader bucket. Example: A high-wear item for a Komatsu WA380 Wheel Loader.
Cummins QSK19 Oil Cooler: A device that removes excess heat from the engine oil, similar to a radiator. It is typically mounted to the side of the engine block. Example: Vital for engine longevity on the Cummins QSK19 heavy-duty engine.
Common Faults and Solutions
Machine Fault: Komatsu PC200-7 Excavator Slow Hydraulic Operation
Symptoms: The machine is running, but all hydraulic functions (boom, arm, bucket, and swing) are very slow and weak. Engine sounds normal.
Possible Causes and Diagnostic Steps:
Check Hydraulic Oil Level: The simplest check. Ensure the hydraulic oil is at the correct level in the sight glass when the machine is in the correct position (arm and bucket extended). Low oil can cause pump cavitation and slow operation.
Check Hydraulic Filters: A clogged hydraulic filter (main or pilot) can restrict flow. Check maintenance records. If in doubt, replace the filters.
Check Pilot Pressure: The joysticks (pilot controls) send low-pressure signals to the main pumps. If this pilot pressure is low, the main pumps will not "stroke" correctly to produce full flow. Connect a gauge to the pilot pressure port.
Check Main Pump Pressure (Main Relief): Connect a hydraulic gauge to the main pump output ports. Operate a function (like arm curl) and stall it. The pressure should rise to the specified relief setting (e.g., 350-380 kg/cm2).
Common Solution:
If the main relief pressure is low, the main relief valve may be dirty, stuck, or worn. The main relief valve is typically located on the main control valve block. Carefully remove it, inspect for debris, and clean it. Check the O-rings for damage. Reinstall and re-test. If the pressure is still low, the valve itself (or the main pump) may be worn out. A worn Komatsu main hydraulic pump (e.g., a 708-2L-00460 series) will not be able to build pressure and flow, resulting in slow operation. In this case, a pump rebuild or replacement is necessary.
For all these parts and more, trust Honour Time Machinery Limited. Our extensive inventory, product knowledge, and commitment to service make us the ideal partner for your construction machinery parts needs. Contact us today to experience the Honour Time difference.
