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RITO Main Hydraulic Pump Assy 4469025 ZX85US AP2D36 Hydraulic Ram Pump 4469025 ZX85 Excavator Piston Pump Assembly

Is internal fluid slippage slowing down your urban construction projects? Tight spaces demand high precision, but worn pumps leak power and cause sloppy controls. Restore crisp handling and full force to your ZX85US ZX85 machine with our premium main hydraulic pump assembly.

  • Item NO.:

    4469025
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

This rugged AP2D36 4469025 hydraulic ram pump is built to last. Ideal for equipment rental fleets and parts wholesalers, it features a heavy-duty design that ensures precise fitment, reliable pressure control, and consistent long-term performance.

4469025 Hydraulic Pump

 
Product Specifications

Part Number  4469025
Part Name Excavator Main Piston Pump Assembly
Compatible Brand Hitachi
Applicable Models ZX85US and ZX85 Excavators
Application Excavator hydraulic system
Material High Tensile Nodular Cast Iron and Hardened Alloy Steel
Product Color Industrial Gray
Working Temperature -20 to 120 degrees Celsius
Key Function Generates dependable high-pressure fluid force for compact excavators
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Compact Frame Design

Optimized outer casing dimensions make it perfect for tight, short-tail excavator compartments.

Leak-Free

High Volumetric Flow

Delivers steady, predictable hydraulic volume to ensure smooth, precise operator control.

Direct Fitment

Bimetal Valve Plate

Uses a durable dual-metal surface to minimize friction and extend operational life.

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: Is it difficult to install this 4469025 pump in the tight engine bay of a short-tail ZX85US?
A: The pump matches the original factory dimensions exactly, meaning all port locations and mounting holes line up perfectly. This precise fit makes installation straightforward even within confined engine compartments.
 
Q: What causes premature piston failure in these compact AP2D36 pumps?
A: Piston failure is almost always caused by fine dirt particles suspended in the hydraulic fluid or running the pump without pre-filling it with oil. Keeping your filters clean and priming the pump housing before startup will prevent this damage.
 
Q: Can I buy individual internal replacement parts for this pump assembly later?
A: Yes, we stock a full line of replacement parts for this assembly, including cylinder blocks, piston sets, valve plates, and seal kits, ensuring easy long-term maintenance.
 
Q: How do you protect the polished shaft splines from damage during shipping?
A: Every pump shaft is fitted with a heavy-duty plastic protector cap and wrapped in oiled anti-rust paper inside the main shipping crate to ensure it arrives in flawless condition.
 
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

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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.

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