8201081 17PR220313B-611B Triple Gear Pump for Hitachi UH045-5

8201081 & 17PR220313B-611B Hydraulic Gear Pump for Hitachi UH045-5

The 8201081 / 17PR220313B-611B hydraulic gear pump is supplied for Hitachi UH045-5 excavator hydraulic system applications. Public supplier references commonly describe this unit as a triple gear pump or a normal line gear pump for UH045-5 excavator use.

This pump should be selected by the original pump number and physical configuration, not by model name alone. Hitachi UH series excavators may vary by production version, machine serial number, hydraulic circuit layout and previous repair history. Final fitment should be verified before ordering.

Cross Reference Numbers

Common reference numbers may include 17PR22

0313B-611B, 17PR 220313B-611B and 8201081. Some public listings also describe this pump as a Shibaura 8201081 reference.

These numbers should be treated as reference information only. Hydraulic gear pumps with similar numbers may still differ in shaft type, mounting face, port direction, pump body layout or rotation direction. Please compare the old pump before purchase.

Application and Fitment Reference

This product page should focus on the Hitachi UH045-5 excavator application. Some public marketplace listings also mention related references such as DH05, UH045, UH052 and UHO45-5, but those should not be treated as confirmed fitment without checking the original pump and machine details.

Before purchase, compare the old pump label, part number, shaft type, mounting hole pattern, hydraulic port layout, inlet and outlet direction, pump body shape and rotation direction. Clear photos of the old pump are recommended when the nameplate is missing or damaged.

Common Failure Symptoms

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

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

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

• Oil leakage: leakage may appear around the pump body, shaft seal, port fittings or mounting area.

• Hydraulic oil overheating: worn pump internals, blocked filters, restricted oil flow or relief valve issues may raise oil temperature.

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

Troubleshooting Before Replacement

• Check hydraulic oil level, oil condition and contamination.

• Inspect suction lines, return lines, fittings and hydraulic filters.

• Check for air entry, loose connections or collapsed hoses.

• Measure hydraulic pressure and flow according to the machine service procedure.

• Inspect relief valves, control valves and related hydraulic components.

• Confirm whether the fault is caused by the pump itself or by blocked filters, hose restriction, valve faults, worn cylinders or contaminated oil.

Installation and Maintenance Notes

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

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

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

• Lubricate or pre-fill the pump according to the service procedure before first startup.

• Check shaft alignment, mounting face, port direction and hose routing before tightening hydraulic lines.

• Start the machine at low speed first and check for leakage, abnormal noise and unstable pressure.

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

Fitment Check Before Ordering

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

FAQ

Is 17PR220313B-611B a hydraulic main pump?

This product is better described as a hydraulic gear pump or triple gear pump for Hitachi UH045-5 excavator references. Some marketplace listings may use the term main pump, but final identification should be based on the old pump label and physical configuration.

What is the relationship between 17PR220313B-611B and 8201081?

Public supplier references commonly list 17PR220313B-611B together with 8201081. Some listings describe it as a Shibaura 8201081 reference. These numbers should be checked against the old pump before ordering.

Which machine model is this pump mainly listed for?

The main model reference is Hitachi UH045-5. Some public marketplace listings mention DH05, UH045, UH052 or UHO45-5, but those references should be verified by the original pump and machine information before purchase.

What should I check before ordering?

Please check the old pump number, nameplate, shaft type, mounting hole pattern, hydraulic port direction, pump body shape, rotation direction and machine serial number. Clear photos of the old pump are recommended.

What can cause repeated hydraulic gear pump failure?

Repeated failure may be caused by contaminated hydraulic oil, blocked filters, air entry, restricted suction lines, relief valve problems, incorrect installation or metal particles left in the hydraulic system.