H3V112DTK-NXXXR-3L03 Hydraulic Main Pump for Komatsu PC200-8 PC220-8

H3V112DTK-NXXXR-3L03 Hydraulic Main Pump for Komatsu PC200-8 PC220-8

The H3V112DTK-NXXXR-3L03 hydraulic main pump is a tandem type piston pump assembly used for Komatsu excavator hydraulic system applications. Public HANDOK references list the H3V112DTK pump family for Komatsu PC200-7/8 to PC220-7/8 machines as a replacement reference for HPV95A or HPV95H pump applications.

This pump should be selected by the original pump nameplate and machine configuration, not by model name alone. Komatsu PC200 and PC220 excavators may vary by production year, serial number, hydraulic controller, regulator type and previous repair history. Final fitment should be verified before ordering.

Cross Reference and Pump Family Reference

Common pump family and reference numbers may include H3V112DTK-NXXXR-3L03, H3V112DTK, HPV95A and HPV95H. For Komatsu PC200-8 and related HPV95 hydraulic main pump searches, public supplier references may also include 708-2L-00490, 708-2L-00500, 708-2L-01490 and 708-2L-01500.

Older or related HPV95 family references may include numbers such as 708-2L-00300, 708-2L-01301, 708-2L-00460, 708-2L-00461, 708-2L-00411 and 708-2L-00412. These numbers should be treated as reference information only. A hydraulic main pump with a similar reference number may still have a different regulator, mounting face, drive shaft, port layout or control configuration.

Application and Fitment Reference

This H3V112DTK-NXXXR-3L03 main pump hydraulic assembly is mainly referenced for Komatsu excavator models such as PC200-8, PC200LC-8, PC220-8 and PC220LC-8. Related HANDOK references also mention PC200-7 and PC220-7 applications within the same H3V112DTK / HPV95 pump family.

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

Common Failure Symptoms

• Slow hydraulic movement: boom, arm, bucket, swing or travel functions respond slowly, especially 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 or hydraulic system 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 issues 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 before removing the pump.

• 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, electrical connectors, pressure sensors and controller-related signals.

• Check the main control valve, relief valves and hydraulic 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.

• Replace or inspect 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 drive 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, drive shaft photo, mounting face photo and hydraulic port layout photo before quotation. This helps confirm whether H3V112DTK-NXXXR-3L03 is suitable for your Komatsu PC200-8 or PC220-8 excavator.