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RITO Gear Pilot Pump 57505 A8VO107 A8VO80 Hydraulic Charge Pump Pilot Gear Pump Excavator Hydraulic Pump Spare Parts

Experiencing stiff control joysticks or erratic pilot pressure drops that paralyze your excavator's main controls? A failing charge pump cuts off vital pilot oil flow, locking up heavy operations. The precision-engineered RITO Gear Pilot Pump 57505 delivers steady, reliable pilot pressure.

  • Item NO.:

    57505
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Avoid jerky machine handling and unsafe boom drops. Upgrade your A8VO107 and A8VO80 main pumps with this premium hydraulic charge pump to ensure crisp lever feedback and smooth, seamless auxiliary hydraulic engagement.

57505 Pilot Pump

 
Product Specifications

Part Number  57505
Part Name Gear Pilot Pump
Compatible Brand Handok
Applicable Models A8VO107, A8VO80 Crawler excavators
Application Excavator hydraulic system
Material High‑strength Alloy Steel
Product Color Copper and Steel Silver
Working Temperature -40°C to 120°C
Key Function Pilot control system charging and oil pressure supply
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Consistent Pilot Delivery

Generates an unyielding, pulsation-free oil stream to keep cabin control joysticks highly responsive and predictable.

Leak-Free

Compact Piggyback Mounting

Precision machined to bolt directly onto the rear of primary heavy piston pumps with zero shaft misalignment.

Direct Fitment

Nitride-Hardened Gears

Internal drive and idler gears undergo strict surface hardening to resist scoring from fine oil micro-particles.

Rigorous Testing

 Multi-Tier Quality Options

We provide Original, OEM, and Premium Aftermarket grades, allowing distributors to meet diverse client budgets and performance needs.

 

Excavator Hydraulic Part

FAQ


Q: How can we tell if a lack of hydraulic control response stems from the pilot gear pump rather than the main control valve?
A: Connect a pressure gauge directly to the pilot test port; if readings stay below the required operating specification while activating levers, the gear pump is worn out. Our unit delivers an immediate, steady pressure rise to fix stiff joystick actions.
 
Q: Is it necessary to replace the main pilot filter element when replacing this auxiliary gear pump?
A: Yes, absolutely. Installing a fresh pump without replacing the pilot filter risks sending old trapped metal debris straight into the new gear teeth, which causes instant scoring and shortens the component's operational life.
 
Q: For distributors buying in bulk, are these gear pumps packaged securely to prevent shaft damage during ocean freight?
A: Every single pump is coated in rust-preventative oil, sealed in heavy VCI anti-moisture bags, and cushioned inside custom-cut foam inserts within reinforced wooden crates to ensure zero transit movement.
 
Q: Can this charge pump handle the extreme viscosity changes of hydraulic oil during cold winter morning startups?
A: The high-torque gear profiles are engineered to efficiently draw thick, cold oil without binding or causing seal blowouts. It stabilizes pilot system pressure quickly, minimizing machine warm-up times in harsh northern climates.
 
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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