Hitachi Genuine Main Pump Repair Kit – YB00003289 / YB00004816 for ZX330 / ZX330-5G / ZX400-5G

Description

1. Key Features & Benefits

• Genuine Hitachi OEM Repair Kit – Manufactured to Hitachi‘s original equipment specifications for the HPV145 main hydraulic pump, used in ZX330, ZX330-5G, ZX400-5G, and compatible Zaxis series excavators. This is a brand‑new, factory‑spec repair kit – not an aftermarket substitute.

• Complete Pump Overhaul Solution – This repair kit contains all the essential seals, O‑rings, gaskets, and wear components required for a comprehensive overhaul of the Hitachi HPV145 main hydraulic pump. It provides everything your service technician needs to restore pump performance to factory specifications in a single, convenient package.

• Restores Pump Performance and Efficiency – Over time, seals harden, O‑rings compress, and internal wear components degrade, leading to internal leakage, reduced hydraulic flow, loss of digging power, and increased fuel consumption. Rebuilding the pump with this genuine repair kit restores proper sealing, consistent hydraulic output, and smooth machine operation – bringing your ZX330 back to its original performance.

• Prevents Costly Pump Failure – A hydraulic pump that develops internal leakage will progressively lose efficiency and eventually fail catastrophically. Replacing seals and wear components at the first sign of trouble prevents expensive pump damage and extends the service life of your HPV145 pump.

• Heavy‑Duty Construction for Demanding Applications – All seals and O‑rings in this kit are manufactured from high‑quality materials specifically engineered to withstand the extreme pressures, temperature variations, and contamination common in mining, quarrying, and heavy construction environments.

• Wide Compatibility Across Hitachi Zaxis and EX Series – This repair kit is compatible with a broad range of Hitachi excavator models, including:

  • ZX Series: ZX330, ZX330-3, ZX330-3G, ZX330-5G, ZX330-5A, ZX330-HHE, ZX330LC-5A, ZX350H, ZX350H-3G, ZX350K, ZX350K-3G, ZX350LC-AMS, ZX350LC-HCME, ZX360H-3G, ZX360H-HHE, ZX360LC-HHE, ZX370MTH, ZX380LC-5A, ZX400-5G, ZX500W

  • ZAXIS Series: ZAXIS330, ZAXIS350F, ZAXIS350LC-5N, ZAXIS370, ZAXIS380LC-5N

  • EX Series: EX265-1, EX265-2, EX265-3, EX265-5, EX270-1, EX270-2, EX270-3, EX280, EX300-1, EX300-2, EX300-3, EX300-5, EX330-5, EX350-5, EX370-5

• Multiple Interchangeable Part Numbers – This repair kit is available under part numbers YB00003289 and YB00004816, which are interchangeable variants. Also referenced as ZX33T-3PUMPKIT.

• Pre‑Shipment Visual Verification – Before packing, we send you detailed high‑resolution photographs of the actual kit (part number markings, seal condition, overall quality). You approve shipment – we never ship blind. Video inspection is also available upon request.

• Fast Delivery – 5–7 working days lead time from our Guangzhou warehouse. Flexible shipping options including DHL, TNT, UPS, FedEx, and sea freight.

2. Technical Specifications

3. Applications

The Hitachi HPV145 main pump repair kit (YB00003289 / YB00004816) is an essential service component for ZX330, ZX330-5G, ZX400-5G, and compatible excavators used across a wide range of demanding job sites:

• Large‑Scale Open‑Pit Mining – ZX330 and ZX400-5G excavators are 30–40 ton class machines that work 20+ hour shifts in extreme conditions. The HPV145 pump delivers a maximum flow of 2 × 288 L/min at 34.3 MPa, making it the heart of the hydraulic system. Over time, seals and O‑rings wear, leading to internal leakage and reduced pump efficiency. This repair kit provides all the components needed to restore the pump to factory performance during scheduled maintenance, preventing unexpected failures that would cause costly downtime in remote mine sites.

• Quarrying & Aggregates – Loading trucks, stockpile management, and material handling in granite, limestone, and basalt quarries place continuous high demand on the hydraulic system. The harsh, dusty environment accelerates seal wear. This genuine repair kit ensures the HPV145 pump maintains consistent pressure and flow, delivering the power needed for fast, efficient loading cycles.

• Heavy Construction & Infrastructure – Highway excavation, dam building, bridge footings, and large‑scale earthmoving projects place sustained high loads on the hydraulic system. Rebuilding the pump with this genuine repair kit restores proper sealing, ensuring smooth, predictable machine response – from delicate grading to heavy bucket loads.

• Demolition & Scrap Processing – Shock loads, vibration, and rapid load changes are routine in demolition yards and metal recycling facilities. The high‑quality seals and O‑rings in this kit are specifically engineered to withstand these extreme conditions, ensuring reliable pump performance.

• Equipment Rental Fleet – 30–40 ton excavators are high‑value rental assets. A genuine repair kit enables cost‑effective preventive maintenance, extending pump life and avoiding costly mid‑rental breakdowns, towing bills, and customer complaints.

4. FAQ – Frequently Asked Questions

Q1: Is this repair kit an exact replacement for my Hitachi ZX330, ZX330-5G, or ZX400-5G?

A: Yes. The YB00003289 and YB00004816 are genuine Hitachi repair kits for the HPV145 main hydraulic pump used in ZX330, ZX330-3, ZX330-3G, ZX330-5G, ZX330-5A, ZX400-5G, and a wide range of compatible Zaxis and EX series excavators. These part numbers are interchangeable. To confirm compatibility for your specific machine, send us your machine serial number and a photo of the old pump – we will verify within 2 hours.

Q2: What does this repair kit contain?

A: This is a complete seal and wear component kit for the HPV145 main hydraulic pump. It includes all the essential O-rings, oil seals, retaining rings, packing, gaskets, and other wear components required for a comprehensive pump overhaul. All components are manufactured to Hitachi‘s original equipment specifications.

Q3: Is this a genuine OEM repair kit or an aftermarket substitute?

A: It is 100% genuine Hitachi OEM, manufactured to Hitachi‘s original equipment specifications. This is not an aftermarket substitute. Genuine OEM parts ensure perfect fit, reliable sealing, and long service life.

Q4: What are the symptoms that indicate my HPV145 pump needs a rebuild?

A: Common symptoms include: reduced hydraulic power and slower cycle times, increased fuel consumption, sluggish machine response, overheating hydraulic oil, visible oil leaks around the pump, or contamination (metal particles) in the hydraulic oil. If you notice any of these signs, your pump may need overhauling with this repair kit.

Q5: Can this kit be used on other HPV series pumps?

A: This kit is specifically designed for the Hitachi HPV145 pump used in ZX330, ZX330-5G, ZX400-5G, and compatible excavator models. It may not be compatible with other HPV series pumps. Always verify the pump model and part number before ordering.

Q6: What is the warranty on this repair kit?

A: The warranty period is 3 to 6 months depending on product details. We do not provide warranty service for genuine original parts. Our value is delivered up front: genuine Hitachi components, new‑condition kit, and pre‑shipment visual verification. For customers who require a warranty‑covered option, we can quote aftermarket alternatives – ask our sales team.

Q7: How long does delivery take?

A: Delivery is 5–7 working days after order confirmation. Flexible shipping options including DHL, TNT, UPS, FedEx, and sea freight are available.

Q8: What payment methods do you accept?

A: We accept T/T (wire transfer), Western Union, and PayPal.

Q9: How can I verify the repair kit is genuine before shipping?

A: Before packing, we send you clear, high‑resolution photographs of the actual kit – part number markings, seal condition, and overall quality. You approve shipment only after reviewing these images. We never ship blind. Video inspection is also available upon request.

Still have questions? Contact Hongtengda Parts – we reply within 24 hours.