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9314145 EPR Proportional Solenoid Valve | 24V Hydraulic Pump Solenoid for Hitachi & John Deere Excavators
Ensure smooth hydraulic operation with this high-performance solenoid valve, designed for HITACHI excavators. It delivers precise flow control, rapid response, and consistent durability under demanding conditions. Compatible with multiple HITACHI models, this valve helps maintain machine efficiency and reduces downtime. Ideal for professionals seeking reliable replacement parts.
The 9314145 proportional solenoid valve, also known as EPR valve or main pump proportional pressure control valve, is a premium hydraulic component used on mid-to-large excavators and forestry equipment from Hitachi and John Deere. Thanks to the long-term joint development between Hitachi and John Deere, this hydraulic part shares the same chassis and hydraulic architecture and can be fully interchanged across both brands. Installed on the hydraulic main pump regulator control circuit, it converts electrical signals from the machine control system into proportional hydraulic pressure. It adjusts the displacement and flow of the main hydraulic pump, maintaining dynamic balance between engine output and hydraulic load.
| Item | Details |
|---|---|
| OEM Number | 9314145 |
| Part Type | EPR Valve / Main Pump Proportional Solenoid Valve |
| Rated Voltage | 24V |
| Installation Position | Hydraulic main pump regulator control circuit |
| Core Function | Convert electric signals to proportional hydraulic pressure, regulate pump displacement and flow |
| Condition | New Aftermarket |
| MOQ | contact us |
FAQs
Q: What excavator models does 9314145 proportional solenoid valve fit?
A: It fits Hitachi ZAXIS-5G / -6 series excavators including ZX200-5G, ZX210H-5G, ZX240-5G, ZX250LC-5B, ZX280-5G, ZX300-5G, ZX330-5G, ZX470-5G, ZX670LC-5G, ZX870LC-5G, hybrid ZH200-A and wheeled ZW250-5B. It also works for John Deere G / GLC / P series excavators: 130G,135G,210G,245GLC,250GLC,300GLC,350GLC.
Q: What symptoms show this proportional solenoid needs replacement?
A: Common failure signs include engine bogging down or stalling, weak and slow machine movements, failure to build hydraulic pressure, and dashboard error codes related to hydraulic pump electrical or pressure abnormalities. These issues often happen when the coil burns out, valve spool sticks, internal leakage occurs or the component suffers heat aging.
Q: Why can this valve work on both Hitachi and John Deere excavators?
A: Hitachi and John Deere jointly developed these excavator platforms, adopting identical chassis and hydraulic system design. This proportional solenoid valve shares the same technical parameters and mounting structure so it is fully interchangeable for matched models.
Q: What is the main role of this 24V EPR proportional valve?
A: It transfers controller electrical signals into variable hydraulic pressure, controlling the main pump flow and displacement. It balances engine power and hydraulic load to avoid overload and optimize machine working performance.
9314145-proportional-solenoid-valve
9314145 Solenoid Valve For HITACHI
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