As a leading Source Manufacturer, we provide Factory Direct Pricing and specialize in the Customized Production and Global Export of high-durability Engine Cylinder Liners. We complement our hydraulic supply, including the HPV145 Pump, by offering guaranteed quality Pistons and Gasket Sets for high-demand engines like Isuzu and Caterpillar.
For your large-scale Hitachi excavators, including the powerful EX330, EX350, and EX360 models, a high-performance hydraulic system is non-negotiable. The HPV145 Hydraulic Main Pump is essential for delivering the immense power required for deep trenching and large material handling. We ensure our replacement pumps, often used with Isuzu or Cummins engines in these classes, provide the highest level of efficiency and responsiveness.
| Component Model | Machine Application 1 | Machine Application 2 & 3 | Part Type Keyword |
|---|---|---|---|
| HPV145 | EX330 | EX350 / EX360 | Hitachi Main Pump |
| HPV145 Rotary Group | EX330LC-5 | EX350-5 / EX360-5 | Axial Piston Pump |
Honour Time Machinery Limited maintains a vast inventory of engine assemblies and spare parts for the world's leading heavy machinery brands: Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our core engine component offerings include: Cylinder Liner, Piston, Piston Ring, Main Bearing, Connecting Rod Bearing, Thrust Washer, Engine Overhaul Gasket Kit, Diesel Fuel Pump, Fuel Injector, Crankshaft, Turbocharger, Water Pump, Oil Pump, Engine Block, Cylinder Head, and Connecting Rod.
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Charge Pump: A small pump, often a gear type, that boosts oil pressure within the hydraulic pump (HPV145) casing to feed the main pump and control circuit. Integrated into the Main Pump body. (Application: Hitachi EX350 Excavator - HPV145 Charge Pump)
Piston Ring Groove: The recess cut into the Piston where the Piston Rings sit, critical for sealing and heat transfer. Located on the Piston Crown. (Application: Isuzu 6BG1 Engine - Piston Ring Groove)
Tappet/Lifter: A component that transfers motion from the camshaft lobe to the pushrod or valve stem. Located in the Engine Block/Head. (Application: Cummins KTA19 Engine - Valve Tappet)
Track Roller: Wheels that support the weight of the excavator's upper structure and guide the Track Chain. Located on the bottom of the Track Frame. (Application: Komatsu PC400-7 Excavator - Track Roller)
Fuel Transfer Pump: Low-pressure pump that moves fuel from the tank to the high-pressure Injection Pump. Often mounted on the Engine Block. (Application: Caterpillar C15 Engine - Fuel Transfer Pump)
Exhaust Brake: A valve in the exhaust system used to create back pressure for auxiliary engine braking. Located in the Exhaust Manifold or pipe. (Application: Weichai WP12 Engine - Exhaust Brake Valve)
Flywheel Housing: The bell-shaped casing that bolts to the rear of the Engine Block, enclosing the Flywheel. (Application: Yanmar 4TNV98 Engine - Flywheel Housing)
Engine Mount: Components (rubber or steel) that attach the engine to the machine chassis, dampening vibration. (Application: Kubota V3800 Engine - Engine Mount)
Oil Pressure Regulator: A spring-loaded valve in the Oil Pump or filter housing that limits maximum oil pressure. (Application: Cummins QSL9 Engine - Oil Pressure Regulator)
Bucket Cylinder: The hydraulic cylinder that controls the opening and closing movement of the excavator bucket. Attached to the Bucket Linkage. (Application: Caterpillar 330F Excavator - Bucket Cylinder)
Equipment/Fault: A Hitachi EX360 Excavator exhibits noticeably weak travel power, especially climbing grades, but the boom and arm functions are strong.
Probable Cause: Since the boom/arm functions are fine, the HPV145 Main Pump is likely healthy. The issue is focused on the travel circuit. A common cause is a failed Relief Valve for the travel circuit in the Main Control Valve, or a severe internal leak within one or both Travel Motors (e.g., a damaged Rotary Group or a seal failure).
Solution: Check the hydraulic pressure at the travel relief valves. If they are within specification, the issue is internal to the Travel Motor. Disassemble and inspect the motor for scoring on the Cylinder Block or Valve Plate, replacing the Rotary Group or associated seals as necessary. Also check the Swivel Joint seals for leakage that could affect both travel circuits.
We offer superior quality and Competitive Pricing for the HPV145 Pump, EX330, EX350, EX360 components, and a full line of heavy-duty Engine Parts.
WhatsApp: +8613532379052 | Email: info@parts-sealing.com
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