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RITO Excavator Main Pump 9257308 ZX350H-3 HPV145 Tandem Pump Assembly 9257126 9260886 ZX330-3 Main Hydraulic Pump Assy

Severe oil temperature spikes and tracking power loss indicate a failing primary dual pump on heavy quarrying jobsites. When the center valve block faces internal wear on heavy-duty -3 series models, variable flow control drops off, killing attachment speed and wasting expensive fuel. Do not let an inefficient power plant sideline your customized crawler fleet.

  • Item NO.:

    9257308 9257126 9257
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Reinvigorate your oil lines with the heavy-duty RITO Excavator Main Pump 9257308. This precision-engineered HPV145 Tandem Pump Assembly utilizes upgraded rotators to deliver reliable flow command, maintaining maximum breakout force and operational synchronization for ZX350H-3 and ZX330-3 setups worldwide.

9257308 Hydraulic Pump

 
Product Specifications

Part Number  9257308 / 9257309 / 9260886
Part Name Variable Displacement Tandem Main Pump Assembly
Compatible Brand Hitachi
Applicable Models ZX350H-3, ZX330-3 Main Hydraulic Series
Application Excavator hydraulic system
Material High Tensile Nodular Cast Iron and Hardened Alloy Steel
Product Color Matte Black
Working Temperature -25 to 120 degrees Celsius
Key Function High-Pressure Fluid Generation and Multi-Circuit Torque Synchronization
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Dual Axial Piston Rotating Configuration

generates steady high-pressure fluid streams, maximizing dual track tracking synchronization.

Leak-Free

Micro-Finished Valve Face Plates

lower internal oil slippage under load, preserving high volumetric displacement across shifts.

Direct Fitment

Vibration-Dampening Heavy Iron Housing

absorbs repetitive hydraulic micro-shocks, protecting internal drive shafts from misalignment.

Rigorous Testing

Global Supply Tiering

We offer Original, OEM, and high-performance Aftermarket options to provide flexible procurement strategies for diverse regional markets.
 
 

 

Excavator Hydraulic Part

FAQ

Q: What specific signs show that a main dual-stage pump is suffering from internal brass shoe scoring?
A: A loud metallic whining noise inside the engine bay, excessive case drain line heating, and jerky stick actions under full loads.
 
Q: What cleanup procedures are required before connecting pilot lines to this new tandem pump?
A: Technicians must clean the main reservoir, replace the return filter element, and fill the pump casing completely with clean fluid.
 
Q: Will this hydraulic unit substitute other part numbers listed in standard parts books?
A: Yes, part 9257308 interchanging with 9257126 and 9260886 serves as a direct fit for standard factory large frames.
 
Q: How does the swashplate control avoid lag when cutting through frozen clay soils?
A: The hardened control pistons are ground to tight tolerances, ensuring smooth movement even during high viscid startup cycles.
 
Q: What quality options are available?

A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.

Q:Why Choose RITO?

A:Listed Factory

Stable&Reliable Quality

OEM Factory for Chinese Top Excavator Brands

Supplier to Fortune 500 Companies
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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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