31Q6-10010 K3V112DTP Hydraulic Main Pump for Hyundai R210LC-9 R220LC-9A

31Q6-10010 K3V112DTP Hydraulic Main Pump for Hyundai R210LC-9

The 31Q6-10010 / 31Q610010 hydraulic main pump is used for Hyundai 9-series excavator hydraulic system applications. Public supplier references commonly list this pump for R210LC-9, R220LC-9A, R235LCR-9 and R235LCR-9A machines.

This pump is commonly referenced with the pump model K3V112DTP-1H9R-9P12 or the broader K3V112DTP pump family. These references can help users identify the correct hydraulic main pump, but final fitment should still be checked by the original pump nameplate and machine configuration.

Cross Reference Numbers

Common reference numbers may include 31Q6-10010, 31Q610010, K3V112DTP-1H9R-9P12 and K3V112DTP.

These numbers should be treated as reference information only. Hydraulic main pumps with similar K3V112DTP codes may still differ in regulator arrangement, solenoid connectors, drive shaft, mounting face, port layout, pilot control configuration or rotation direction.

Application and Fitment Reference

This 31Q6-10010 Hyundai hydraulic main pump is mainly referenced for R210LC-9, R220LC-9A, R235LCR-9 and R235LCR-9A. Some public supplier references also list related Hyundai HX-series applications, including HX220 L, HX220 NL and HX235 LCR.

The model list should be used as a fitment reference, not a universal guarantee. Before purchase, compare the old pump label, pump code, regulator position, solenoid connector, shaft type, mounting face, inlet and outlet ports, case drain position and machine serial number.

Genuine and Aftermarket Supply Options

This product may be supplied as a genuine unit or an aftermarket replacement depending on current stock. For genuine stock, buyers should confirm the nameplate, label, packaging condition and photos before ordering. For aftermarket supply, the physical configuration should be compared carefully with the original pump to reduce wrong orders.

Common Failure Symptoms

• Slow hydraulic movement: boom, arm, bucket, swing or travel functions respond slowly under load.

• Weak digging force: the excavator cannot maintain stable hydraulic pressure during heavy operation.

• Machine speed drops during combined movements: pump output, regulator control and pilot pressure should be checked.

• Abnormal pump noise: whining, vibration or cavitation-like sound may indicate air entry, suction restriction, oil contamination or internal wear.

• Hydraulic oil overheating: worn pump components, blocked filters, restricted oil flow or relief valve problems may increase oil temperature.

• Metal particles in oil or filters: internal pump wear or system contamination should be investigated before installing a replacement pump.

Troubleshooting Before Replacement

• Check hydraulic oil level, oil condition and contamination.

• Inspect suction lines, return lines, case drain lines and hydraulic filters.

• Check for air entry, loose fittings, damaged hoses or restricted suction flow.

• Measure main pump pressure, pilot pressure and case drain flow according to the machine service procedure.

• Inspect pump solenoids, regulator control, electrical connectors and pressure sensors.

• Check the main control valve, relief valves and cylinders if pressure loss or slow movement remains unclear.

• Compare the old pump nameplate and physical configuration before confirming the replacement pump.

Installation and Maintenance Notes

• Clean the pump mounting area and hydraulic line connections before removal.

• Cap all open hydraulic lines and pump ports to prevent dust, water and metal particles from entering the system.

• Inspect or replace hydraulic filters before installing the replacement pump.

• Flush the hydraulic system if metal particles, burnt oil or severe contamination are found.

• Pre-fill or lubricate the pump according to the service procedure before first startup.

• Check shaft engagement, mounting alignment, port direction and hose routing before tightening all lines.

• Start the engine at low speed first and check for leakage, abnormal noise, unstable pressure and excessive case drain flow.

• Do not operate the excavator under heavy load until oil flow, pressure, temperature and machine response are confirmed normal.

Fitment Check Before Ordering

To reduce wrong orders, please send the machine model, machine serial number, old pump nameplate photo, full pump view, regulator photo, solenoid connector photo, shaft photo, mounting face photo and hydraulic port layout photo before quotation.

FAQ

Is 31Q6-10010 the same as K3V112DTP?

31Q6-10010 is a Hyundai hydraulic main pump part number, while K3V112DTP refers to the pump model or pump family reference. Many public listings associate 31Q6-10010 with K3V112DTP-1H9R-9P12, but final confirmation should be made by the original pump nameplate.

Which Hyundai excavator models commonly use this pump?

Common model references include Hyundai R210LC-9, R220LC-9A, R235LCR-9 and R235LCR-9A. Some public references also list HX220 L, HX220 NL and HX235 LCR. Final fitment should be verified before ordering.

Is this product available as genuine or aftermarket?

Genuine and aftermarket options may be available depending on current stock. Please confirm the supply type, nameplate photos, packaging photos and pump configuration before ordering.

What should be checked before ordering?

Please check the old pump number, K3V112DTP code, regulator type, solenoid connector, drive shaft, mounting face, hydraulic port layout, case drain position and machine serial number.

Can another K3V112DTP pump replace 31Q6-10010?

Not always. K3V112DTP pumps may have different regulator, port, shaft, mounting and control configurations. The old pump nameplate and physical layout should be compared before using any replacement.