R210, R220 or R250 with slow functions, actuator drift or one completely dead circuit? A worn 31Q6-19113P main control valve allows cross-port leakage between circuits, causing the boom to sink, swing to drift and travel to creep when controls are released. RITO supplies this precision main control valve assembly to restore independent, drift-free metering on all Hyundai R210-R260 functions.
Item NO.:
31Q6-19113POrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock31Q6-19113P Main Control Valve Assembly for Hyundai R210, R220, R250 and R260 excavators. This valve integrates all main directional spools, flow-sharing compensators, boom-priority and travel-priority circuits in one body. Precision spool-to-bore clearances maintain the metering resolution that allows the Hyundai EPOS electronic hydraulic system to control each function independently under combined load.
| Part Number | 31Q6-19113P |
|---|---|
| Part Name | Main Control Valve Assembly |
| Compatible Brand | Hyundai |
| Applicable Models | R210, R220, R250, R260 Excavator |
| Application | Main hydraulic distributor and flow-sharing control valve for Hyundai R210-R260 series |
| Material | Precision alloy steel spools and valve body with OEM spool-bore clearances |
| Product Color | Industrial finish |
| Working Temperature | -25°C~+80°C |
| Key Function | Meters and flow-shares all hydraulic functions for Hyundai R210 / R220 / R250 / R260 EPOS system |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Main spool stroke and pilot area matched to Hyundai EPOS electronic control signal range, maintaining the correct function response at each joystick position without re-calibration.
Internal flow-sharing compensator spools and springs installed to OEM specification, preventing the function robbing that occurs when boom or travel demand reduces flow to other circuits.
Single valve body covers R210, R220, R250 and R260, simplifying stock for Hyundai fleet maintenance operations handling multiple model grades.
New spring-loaded load-check valves in all work-port galleries prevent actuator drift and boom sink during combined-load holds, maintaining safe static position without continuous pump demand.
FAQ
Q: What causes 31Q6-19113P main control valve failure on R220?
A: Contaminated hydraulic oil scoring spool surfaces is primary. Secondary causes include the tank breather filter clogging (pressurising the tank and forcing abrasive particles past suction strainer), and water ingress from a failed main pump shaft seal.
Q: How do I verify whether the 31Q6-19113P valve or the Hyundai EPOS solenoid manifold is the failure point?
A: Disconnect the solenoid manifold pilot lines and manually apply pilot pressure to each main spool using a hand pump. If functions respond correctly with manual pilot, the main valve body is serviceable and the solenoid manifold or EPOS controller is faulty.
Q: Is a full hydraulic flush required before fitting 31Q6-19113P?
A: Yes. Debris from the worn valve spools circulates in all circuits. Flush the tank, replace return-line and high-pressure filters and clean all pilot line strainers before installing the new valve to protect the new spool surfaces.
Q: How to confirm 31Q6-19113P fits my R210 or R220?
A: Verify the existing valve body part number is 31Q6-19113P and the machine model is R210, R220, R250 or R260. Match the port count and SAE port sizes. Provide machine serial number to our team for cross-reference.
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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