PARKER

Parker 324-9110-445 Gear Pump 52.4cc Case 580M 580N 590SN

Parker 324-9110-445 Gear Pump (87434672) — Direct-Fit for Case 580M / 580N / 590SN Backhoe Loaders

The Parker 324-9110-445 (Case OEM part 87434672) is a 52.4cc single-section hydraulic gear pump engineered for Case 580M, 580N, and 590SN series backhoe loaders. Built with a rugged cast iron body and a 15-spline drive shaft, it delivers consistent hydraulic pressure for all loader and backhoe functions in demanding job site conditions.

Key Benefits

  • 52.4cc displacement — provides ample flow for simultaneous loader lift, tilt, and backhoe operation without power drop-off

  • Cast iron housing — resists pressure-induced deformation and thermal expansion, far outlasting aluminum alternatives in heavy-use applications

  • 15-spline direct-fit shaft — matches the OEM flexible coupling (257948A1) for vibration-free power transmission and extended coupler life

  • Direct OEM replacement — no modifications, shims, or adapter plates needed; bolts directly onto Case 580M/580N/590SN engine bell housing

Compatible Equipment

Case 580M Series II & III (after S/N N4C303000), Case 580N Tier 3 / 4A / 4B, Case 580SN Tier 3 / 580SN WT Tier 3, Case 590SN Tier 3, Case 570NXT Tier 4A / 4B, Case 570N EP Tier 4A.

Description

Why the 87434672 Is the Workhorse of Case Backhoe Hydraulics

As the main hydraulic pump for Case's 580M/580N/590SN platform, the 87434672 operates at the heart of the machine — powering everything from loader arm lift to backhoe swing. This single-section Parker gear pump displaces 52.4cc per revolution, delivering the high-volume, moderate-pressure flow that backhoe loaders demand for multi-function operation. Unlike tandem pumps, its simplified single-section design means fewer internal wear surfaces and lower rebuild complexity, translating to longer service intervals and easier field maintenance.

Rigorous Quality & Testing

At HYH Hydraulics, every 87434672 pump is sourced through Parker-authorized supply channels and undergoes pre-shipment hydraulic bench testing. We verify flow rate, pressure holding, and volumetric efficiency against OEM specifications. The cast iron gear housing is inspected for porosity and dimensional accuracy, while the 15-spline shaft is checked for hardness and surface finish to ensure a perfect mate with the flexible drive coupling.

Supply Chain Reliability

We stock the 87434672 in depth because we know Case backhoe downtime is expensive. Single-unit emergency replacements and bulk fleet orders are both supported, with same-day dispatch on stocked inventory. Our long-standing relationship with Parker distribution ensures consistent availability even during peak construction season.

Applications

  • Case 580M / 580N / 590SN backhoe loader main hydraulic pump

  • Loader boom lift, bucket tilt, and auxiliary hydraulic circuits

  • Backhoe boom, dipper, bucket, and stabilizer functions

  • Municipal, utility, rental fleet, and heavy construction operations

ParameterSpecification
Part Number (OEM)87434672
Part Number (Parker)324-9110-445
Pump TypeSingle-Section Gear Pump
Displacement52.4 cc/rev
Shaft Type15-Spline
Housing MaterialCast Iron
Max Operating Pressure241 bar (3,500 psi)
RotationClockwise
Weight59 lbs (26.8 kg)
Compatible Coupling257948A1 (Flexible, 17-Tooth)
Compatible ModelsCase 580M Series II/III, 580N, 580SN, 590SN, 570NXT, 570N EP
ApplicationBackhoe Loader Main Hydraulic Pump
Warranty12 Months

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HENGYUHANG Power Technology Co., LTD

Location

No. 173, Xiacuo, Sihuang Village, Xiamei Town, Nan 'an City, Fujian Province

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