Hitachi EX200-6 ZX200-6 Excavator Hydraulic Main Pump Assembly HPV118 9148112 9198301 Main Hydraulic Piston Pump Replacement
Welcome to our heavy machinery hydraulic supply center. We specialize in providing the complete EX200-6 / ZX200-6 excavator hydraulic main pump assembly (Part No. 9148112 / 9198301 / HPV118), precision-manufactured as a heavy-duty aftermarket replacement part compatible with Hitachi large engineering machinery equipment. Engineered to restore original system hydraulic flow and operating pressure, this dual axial piston pump guarantees smooth compound movements and high digging power under heavy operating loads.
- Product Name: Hydraulic Main Pump Assembly / Variable Axial Piston Pump / Main Piston Pump
- Applicable Machine Models: Fit for Hitachi EX200-6, ZX200-6, ZX200, ZX210-6, ZX210LC-6 Excavators
- Hydraulic Pump Model: HPV118 / HPV118HW / K3V112DT
- Reference Part Number / OEM: 9148112 / 9198301 / 4468242 / 9183022
- Integrated Components: Dual piston pump housing, hydraulic displacement regulator, swashplate cradle, pilot gear pump & solenoid valve block
- Condition: 100% Brand New Aftermarket / Direct OEM Fit Replacement
- Quality Testing & Warranty: 100% Bench Pressure & Flow Rate Tested, 6–12 months warranty included
Severe wear inside the hydraulic pump degrades excavator operating speeds. Replacing your worn unit with our EX200-6 hydraulic main pump assembly directly resolves these critical system failures:
Cause: Severe internal wear on the cylinder block, pistons, or valve plate causing high internal oil slippage.
Fix: Installing a brand-new main pump restores full operating pressure (34.3 MPa) and fast cycle times for boom, arm, and bucket.
Cause: Sticking pump displacement regulator or faulty pilot control pressure failing to destroke the pump.
Fix: Pre-calibrated hydraulic regulators ensure precise engine-pump torque matching to prevent engine overload stalling.
Cause: Pitted drive shaft bearings, damaged swashplate support bearings, or air aeration in suction lines.
Fix: Full assembly replacement eliminates mechanical whine, chatter, and vibration, protecting down-stream control valves.
Cause: Extreme internal fluid recirculation leakage generating excess thermal energy inside the casing.
Fix: Tight micron-level piston-cylinder clearances eliminate internal leakage and prevent fluid thermal breakdown.
Cause: Hardened or damaged main drive shaft oil seals due to high operating heat and pressure spikes.
Fix: Built-in Japanese high-pressure oil seals prevent external oil leaks and protect hydraulic fluid levels.
Engineered for high-intensity 20-ton excavator earthmoving tasks, this main hydraulic pump suitable for Hitachi EX200-6 / ZX200-6 excels in:
- Heavy Earthmoving & Mass Excavation: Delivers stable high-pressure oil flow for continuous full-bucket digging cycles.
- Trenching & Utility Construction: Precise variable displacement response enables accurate multi-function boom and arm control.
- Rock Breaking & Demolition: Heavy-duty iron casting withstands harsh continuous hydraulic shock pressures.
Q: Where can I buy a replacement hydraulic main pump assembly compatible with Hitachi EX200-6 or ZX200-6?
A: You can order brand-new aftermarket EX200-6 / ZX200-6 hydraulic main pumps directly from us. We supply fully assembled, bench-tested ready-to-install units.
Q: What is the pump model and OEM part number for the EX200-6 hydraulic pump?
A: The primary pump model is HPV118 (or K3V112DT), and common OEM reference numbers include 9148112, 9198301, and 4468242. Please check your pump nameplate or contact us for verification.
Q: Does this EX200-6 main pump include the pilot gear pump and regulator?
A: Yes, it comes as a complete assembly including the main piston pump, pre-calibrated hydraulic displacement regulator, and rear pilot gear pump.
We also supply a comprehensive range of hydraulic pumps, motors, valves, and engine assemblies for major excavators:
| Product Category | Part Description | Compatible Excavator Models | Reference Part Number / OEM |
|---|---|---|---|
| Hydraulic Main Pump | Dual Axial Piston Hydraulic Main Pump Assembly | EX200-6, ZX200-6, ZX210-6 | HPV118, 9148112, 9198301 |
| Swing Motor Assembly | Complete Slewing Motor with Reduction Gearbox | EX200-6, ZX200-6, ZAX200-1 | 4426372, 4398514 |
| Travel Motor Assembly | Final Drive Travel Reduction Motor Unit | EX200-6, ZX200-6, ZX210LC | 9158863, 9182390 |
| Main Control Valve | Hydraulic Distributing Control Valve | EX200-6, ZX200-6, ZX350-6 | 4653603, 4437432 |
| Diesel Engine Assembly | Complete Diesel Engine Unit / Long Block | For Isuzu 6BG1T / 4HK1 Engines | 8-98018531-0, 1-11000852-0 |
