PSVD2-27 Pilot Pump for excavators spare parts

Short Description:

The PSVD2-27 pilot pump is an original high-precision dedicated hydraulic gear pilot pump perfectly matched with KYB PSVD2-27 main pump, widely applied to 3–4 ton mini excavators including Kubota, IHI, Sunward and other small construction machinery equipped with KYB PSVD2 series hydraulic system.

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Product Detail

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description

The PSVD2-27 pilot pump adopts miniaturized precision reinforced gear pump structure, professionally optimized for the low-pressure, small-flow, high-frequency frequent start-stop and short-cycle operation characteristics of KYB PSVD2-27 main pump supporting 3–4 ton mini excavators. Different from ordinary general pilot pumps with poor low-load sensitivity and easy pressure jitter, this model strictly follows KYB original factory supporting standards, with precise mini-size installation dimensions, fully matched hydraulic parameters, ultra-low internal leakage and linear stable flow-pressure output under frequent light-load switching. Equipped with micro high-precision wear-resistant alloy gear pair, mini anti-fatigue bearing assembly and low-temperature aging-resistant composite sealing system, it can maintain stable pilot pressure output without attenuation under long-term frequent start-stop and intermittent cyclic hydraulic impact. The compact high-rigidity integral pump body features lightweight structure, excellent vibration resistance and dust resistance, perfectly adapting to narrow space construction, indoor demolition, garden greening and other fine and complex working environments.

product parameters

Product Model: PSVD2-27 Pilot Pump

Product Type: Small Flow Positive Flow Control Precision Hydraulic Gear Pilot Pump

Applicable Main Pump: KYB PSVD2-27 Hydraulic Main Pump

Applicable Equipment: 3–4 Ton Mini Excavators (Kubota, IHI, Sunward and other KYB system small excavators)

Structural Feature: Ultra-small Flow Pulsation, Light-load Constant Pressure Output, Ultra-low Internal Leakage, Compact Reinforced Precision Structure

Core Structure: Mini High-precision Alloy Gear Set, Micro Anti-fatigue Bearing Assembly, Low-temperature Resistant Sealing System, Compact Integral High-rigidity Pump Body

Working Characteristics: Ultra-sensitive Light-load Response, Stable Idle & Light-load Pressure, Low Vibration & Low Noise, Precise and Flexible Operation

Core Function: Provide Stable Precise Pilot Pressure, Drive PSVD2-27 Main Pump Variable Adjustment and Whole Machine Fine Hydraulic Actions, Ensure Flexible and Sensitive Operation

Applicable Working Conditions: Narrow Space Construction, Indoor Demolition, Garden Greening, Municipal Fine Renovation, Frequent Intermittent Operation

Supporting Matching Parts: PSVD2-27 Main Pump, Small-flow Main Control Valve, Mini Pilot Valve Group, Precision Hydraulic Filter and Supporting Pipeline

advantages

Adopting micro low-pulsation constant-pressure output technology, it effectively solves light-load pressure jitter and delayed response caused by frequent intermittent start-stop and fine compound actions of mini excavators, thoroughly improving the common problem of insensitive and rigid operation of small excavators.
High-precision mini alloy gear pair and reinforced micro bearing structure ensure ultra-low internal leakage under frequent light-load switching, maintain long-term stable pilot pressure output without attenuation, and keep sensitive operation consistency for a long time.
Low-temperature anti-aging composite sealing system adapts to variable outdoor temperature working conditions, effectively prevents oil leakage and pressure loss caused by frequent start-stop impact, and reduces daily failure rate and maintenance cost of mini equipment.
Compact lightweight high-rigidity pump body is designed for narrow-space operation, with excellent vibration resistance and dust resistance, adapting to complex and fine construction environments such as indoor and garden sites, and has a longer service life than ordinary universal small pilot pumps.

FAQ

Q1: What are the common failure symptoms of PSVD2-27 pilot pump?
A: Typical faults include insensitive light-load operation, slow boom/arm fine action response, unstable idle pilot pressure, walking jitter during low-speed travel, unsmooth swing fine adjustment, delayed main pump variable response, pump body slight oil leakage and abnormal micro noise.
Q2: Why does the mini excavator operate rigidly after long intermittent operation?
A: Long-term frequent start-stop and light-load switching cause slight wear of internal precision gears and bearings of the pilot pump, increased internal leakage and decreased pilot pressure, resulting in insensitive main pump variable adjustment and unsmooth hydraulic actions. Replacing the aging PSVD2-27 pilot pump can restore original flexible control performance.
Q3: How to maintain PSVD2-27 pilot pump daily?
A: Keep the small-flow hydraulic system oil clean, replace hydraulic oil and fine filter elements regularly to prevent tiny impurities from wearing micro-precision gear components. Regularly check the pump body for oil leakage and abnormal noise to ensure stable pilot pressure output and sensitive main pump variable operation.
Q4: How to extend the service life of PSVD2-27 pilot pump?
A: Avoid frequent sudden start-stop impact and long-term dirty oil operation, maintain hydraulic system cleanliness, reduce wear of internal micro-precision components, and effectively extend the service life of the mini precision pilot pump.
Q5: Is debugging required after replacing PSVD2-27 pilot pump?
A: This pilot pump adopts original standard parameters and compact installation dimensions matching PSVD2-27 system, supporting non-destructive direct replacement. It is recommended to check idle and light-load pilot pressure slightly after installation to ensure optimal system linkage.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.