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

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

The 17PR220313B-611B hydraulic gear pump is supplied for Hitachi UH045-5 and UHO45-5 excavator hydraulic system applications. It is commonly requested as a hydraulic gear pump, triple gear pump or 3-stage pump for compact and mid-size Hitachi excavator repair.

This page focuses on 17PR220313B-611B as the main part number. 17PR 220313B-611B is a common spaced writing format, while 8201081 is used as a cross reference in public aftermarket listings. Final fitment should be confirmed by the old pump number, shaft type, mounting face, port layout and machine information before ordering.

Cross Reference and Part Number Notes

Common checking references for this pump include 17PR220313B-611B, 17PR 220313B-611B and 8201081. Some market listings also describe 8201081 as a Shibaura reference for this hydraulic gear pump direction.

These numbers should be used for checking, not as the only purchase proof. Hydraulic gear pumps with similar numbers may still differ in shaft size, spline or keyway design, mounting hole pattern, port direction, pump body layout or rotation direction.

Application Reference for Hitachi UH Series Excavators

The strongest application reference for this page is Hitachi UH045-5 / UHO45-5. Public marketplace references may also mention DH05, UH045 and UH052, but these model names should be treated as checking references unless the old pump and machine details match.

For older excavators, the hydraulic system may have previous repair history or non-original replacement parts. The machine model alone is not enough for final confirmation. Compare the removed pump, nameplate, shaft, ports and mounting face before quotation.

How to Confirm the Correct Hydraulic Gear Pump

To reduce wrong orders, please check the removed pump before purchase. Clear photos are especially important when the nameplate is missing, damaged or covered by oil and dirt.

• Confirm the old pump number is 17PR220313B-611B, 17PR 220313B-611B or 8201081.

• Compare the shaft type, shaft length, spline or keyway design.

• Check the mounting face, pilot diameter and mounting hole pattern.

• Compare inlet and outlet port size, thread type and port direction.

• Confirm pump body layout, gear section arrangement and rotation direction.

• Send machine model, serial number and old pump photos before quotation if you are not sure.

Common Failure Symptoms

A hydraulic gear pump may need replacement when the excavator shows slow hydraulic response, weak hydraulic force, abnormal pump noise, oil leakage, unstable pressure, overheating hydraulic oil or metal particles in filters.

Before replacing the pump, check whether the issue is caused by pump internal wear or by other hydraulic system problems. Blocked filters, dirty oil, air entry, restricted suction lines, relief valve faults and worn hydraulic cylinders can create similar symptoms.

If metal particles are found in the hydraulic system, clean the hydraulic lines, tank and filters before installing a replacement pump. Installing a new pump into a contaminated system can cause repeated failure.

Troubleshooting Before Replacement

Before ordering a 17PR220313B-611B replacement pump, inspect the complete hydraulic circuit. This helps repair shops and equipment owners avoid replacing the pump when the root cause is outside the pump body.

• Check hydraulic oil level, oil viscosity and oil contamination.

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

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

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

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

• Confirm whether the fault follows the pump after testing or comparison.

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.

Before installing the replacement pump, compare the shaft, mounting face, port direction and pump body layout with the removed unit. Inspect or replace hydraulic filters, and pre-fill or lubricate the pump according to the service procedure before first startup.

After installation, start the machine at low speed first. Check for leakage, abnormal noise, unstable pressure and oil temperature before operating under heavy load.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this pump is suitable for Hitachi UH045-5 hydraulic system repair when the original gear pump is worn, leaking or unable to maintain stable flow. For distributors, it can be supplied as a replacement hydraulic pump reference for older Hitachi UH series service demand.

Topvelsun supports small repair orders and bulk inquiries. To improve quotation accuracy, please send the required quantity, old pump nameplate, machine model, serial number and photos of the shaft, mounting face and hydraulic ports.

FAQ

What is the main product on this page?

This page is for the 17PR220313B-611B hydraulic gear pump, also searched as 17PR 220313B-611B, for Hitachi UH045-5 / UHO45-5 excavator hydraulic system references.

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

8201081 is used as a cross reference for this hydraulic gear pump direction in public aftermarket listings. The old pump label and physical configuration should still be checked before ordering.

Is this a main pump or a gear pump?

This product is better described as a hydraulic gear pump or triple gear pump. Some marketplace listings may use the term main pump broadly, but final identification should be based on the old pump number and pump structure.

Which Hitachi model is the main reference?

The strongest model reference is Hitachi UH045-5 / UHO45-5. Other references such as DH05, UH045 and UH052 should be checked by old pump, machine serial number and hydraulic circuit configuration.

What should I check before ordering?

Please check the old pump number, nameplate, shaft type, mounting face, port direction, pump body layout, rotation direction and machine serial number. Clear photos of the removed 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.