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0476708 SPRING;FLUSH for Hitachi EX70LCK-5/4JG1T

0476708 SPRING;FLUSH for Hitachi EX70LCK-5/4JG1T

  • Product Number: 0476708
  • Product Name: SPRING;FLUSH
  • Machine Model: EX70LCK-5
  • Engine Model: 4LE2,4JG1
  • Weight: 0.02KG

Compatible Machine Models:EX60-5(LC),EX70LCK-5,EX80U,EX75UR-5,ZX75US,ZX70,ZX80LCK,ZX75US-A,ZX75UR-5B,ZX75USK-5B

product details

 

Description

Part Name SPRING;FLUSH
Part Number 0476708
Brand Name HITACHI
Place of Origin Japan
Delivery Time 1-3 work days
Packaging Type Cartons

  

1.jpg In the hydraulic system coolers, travel motor housings, and transmission lubrication lines of Hitachi excavators and mining trucks, the flushing valve plays a crucial role in regularly removing contaminants and renewing the oil. At the heart of the flushing valve is the flushing spring, which precisely controls the opening pressure of the valve core and the reset speed during each flushing cycle. When the spring becomes fatigued and its elasticity decreases, the valve core's opening pressure drifts, flushing flow is insufficient, and contaminants cannot be effectively expelled. When the spring sticks or breaks, the flushing valve may stay permanently open or closed, causing the system to either leak continuously or accumulate debris. Those overlooked flushing springs, once they fail, allow contaminants to quietly "settle" inside the system, accelerating wear, clogging oil passages, and ultimately leading to major repairs. 5.jpg

Rust and Corrosion Resistance, Suitable for Harsh Environments: Washdown springs operate in environments exposed to oil, coolant, or even water, making rust and corrosion resistance crucial. Original Hitachi springs can be treated with zinc plating, nickel plating, Dacromet, or zinc-aluminum coating depending on working conditions, with salt spray test durations reaching several hundred hours. For water-involved washing systems, stainless steel spring wires are also used, fundamentally eliminating the risk of rust and ensuring long-term stable performance in humid environments.

Fatigue Life, Ultimate Verification: Each batch of original Hitachi washdown springs undergoes sample high-cycle fatigue testing, cycling millions of times under maximum compression to verify that the fatigue life meets design requirements. After testing, springs must show no cracks, fractures, or significant load reduction, ensuring that they do not need replacement for tens of thousands of hours after installation.

Compatibility Verification, System Optimization: As part of the wash valve assembly, original Hitachi washdown springs undergo strict compatibility tests with valve cores, valve seats, seals, and other components. The spring's elastic characteristics are perfectly balanced with the valve core’s hydraulic forces and friction, ensuring the wash valve opens precisely under the set differential pressure and closes quickly after pressure is released, achieving optimal washing performance and minimal leakage.

未标题-1.jpg In the maintenance market, imitation flush springs often cut corners in materials and workmanship—ordinary carbon steel wire has a short fatigue life, losing elasticity after just a few thousand cycles; winding accuracy is low, causing springs to tilt and sticking the valve core; and rust protection is minimal, with rust appearing after only a few weeks. Original Hitachi flush springs strictly adhere to the factory-specified material grades, load curves, and anti-corrosion standards. From small flush valve springs just a few millimeters long to cooler drain springs several tens of centimeters long, each spring undergoes rigorous factory testing. Choosing original flush springs means injecting the most reliable 'cleaning power' into your flush system, ensuring every flush is thorough and every contaminant has nowhere to hide.

Check now for the original Hitachi flush springs and flush valve kits corresponding to your model, and protect the system's most thorough clean cycle with the factory's 'elastic heart.'

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The Ownership Of The Products Belongs To Guangzhou Qicheng Machinery Equipment Co., Ltd.