3855360050 Original Loader Solenoid Valve for ZW310-6

Part number 385536050 is an original solenoid valve provided by Hitachi for ZW310-6 and other wheel loaders. According to the Hitachi parts system rules, this component is usually also suitable for models in the ZW140, ZW180, ZW220, ZW250 and other series. As the core unit of hydraulic system or engine control, it may be used to control the on/off of hydraulic oil circuit, achieve safety lock function, or serve as a shut-off solenoid valve. The specific function depends on its installation position on the equipment. Its universal number (substitute part number) includes similar models such as 3855360049 and 385536051, but the use of non-standard spare parts is strictly prohibited to avoid control system failure or equipment damage.

This product is a Hitachi pure solenoid valve, using high-strength metal valve body and high-performance solenoid coil. The working voltage is usually DC12V or DC24V, the coil power is ≤ 15W, the insulation level is B, and the coil temperature rise is<75 ℃. The typical structure is direct acting or pilot operated, and the valve body material may be brass, stainless steel, or aluminum alloy. The sealing material is nitrile rubber (NBR), fluororubber (FKM), or ethylene propylene diene monomer (EPDM) to ensure no leakage under high pressure. The working pressure range is about 0-1.0MPa (water/air) or 0-0.5MPa (oil), and the medium temperature range is -5 ℃ to+80 ℃ (standard) or -10 ℃ to+130 ℃ (special order), suitable for the high vibration and dusty working environment of loaders. Hitachi pure solenoid valves have significant advantages in response speed, sealing performance, and durability: action life>150000 times, allowable voltage fluctuation range ± 10%, and protection level up to IP54 or IP65.

Replacement cycle: It is recommended to check every 3000-5000 working hours or replace in a timely manner based on fault codes (such as abnormal feedback of solenoid valve currents such as 11400-2, 11401-2, etc.). Daily inspection: Check the solenoid valve coil for overheating, abnormal noise, and valve body for leakage every week. Fault manifestation: Electromagnetic valve failure may cause abnormal engine shutdown, difficulty in starting equipment, reduced operational performance, slow action or abnormal noise. Replacement steps: 1 Disconnect the negative terminal of the battery and release the system pressure; 2. Mark the solenoid valve harness connector and oil pipe position; 3. Disassemble the fixing bolts, remove the old solenoid valve, and pay attention to collecting the overflowing hydraulic oil; 4. Clean the installation surface and apply a small amount of clean hydraulic oil on the sealing ring of the new solenoid valve; 5. Install in the original position and tighten the bolts to the specified torque; 6. Connect the wiring harness, restore power, start the device, and test its functionality.