PARKER

Parker 87434673 Double Gear Pump 36+29cc Case 580SM Series 2

Parker 87434673 Double Gear Pump — Reliable Power for Case 580SM Backhoe Loaders

The Parker 87434673 is a tandem double gear pump from the PGP330 series, purpose-built for Case 580SM Series 2 and Series 3 backhoe loaders. With a dual-section displacement of 36+29 cc/rev and a 15-tooth spline shaft, it delivers consistent hydraulic flow to both the loader and backhoe circuits simultaneously.

Key Benefits

  • Dual-section design (36+29cc) — powers loader and backhoe functions independently for smooth, responsive multi-function operation

  • Cast iron PGP330 construction — withstands high-pressure duty cycles up to 3,500 psi with minimal wear

  • Direct OEM replacement — drop-in fit for Case 580SM Series 2 (2004–2008) and Series 3, no modifications needed

  • 15-tooth spline shaft — precise engagement with the engine drive coupling for reliable torque transfer

Compatible Equipment

Case 580SM Series 2, Case 580SM Series 3, Case 580SM+ Series 2 backhoe loaders. Cross-reference: 3249120345.

Description

Engineered for Heavy-Duty Backhoe Performance

The Parker PGP330 series is the industry benchmark for construction equipment gear pumps. The 87434673 model features a tandem pump body that integrates two independent gear sections — 36cc and 29cc — into a single compact housing. This dual-pump configuration eliminates the need for separate pumps and complex plumbing, reducing installation time and potential leak points.

Built to Last in Demanding Environments

Every 87434673 pump is manufactured with high-grade cast iron housing and precision-ground gears. The cast iron construction provides superior resistance to thermal expansion and pressure spikes compared to aluminum alternatives, making it ideal for backhoe loaders that operate in dusty, high-temperature job site conditions. Each unit undergoes hydraulic bench testing to verify flow rate, pressure holding, and volumetric efficiency before shipment.

Supply Chain You Can Count On

At HYH Hydraulics, we maintain dedicated stock of the 87434673 to support urgent equipment downtime. Our direct sourcing from Parker-authorized channels ensures genuine components — no gray-market substitutes. We offer flexible order quantities from single-unit replacements to bulk fleet orders, with express shipping available for emergency breakdowns.

Applications

  • Case 580SM Series 2 / Series 3 backhoe loader main hydraulic pump

  • Loader lift, tilt, and bucket control circuits

  • Backhoe boom, arm, and bucket hydraulic functions

  • Construction, utility, and municipal fleet maintenance

ParameterSpecification
Part Number87434673
Cross Reference3249120345
Pump TypeDouble Gear Pump (Tandem)
SeriesParker PGP330
Displacement (Front Section)36 cc/rev
Displacement (Rear Section)29 cc/rev
Shaft Type15-Tooth Spline
Housing MaterialCast Iron
Max Operating Pressure241 bar (3,500 psi)
RotationClockwise
Compatible ModelsCase 580SM Series 2, 580SM Series 3, 580SM+ Series 2
Model Years2004–2008 (Series 2)
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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+86 19918575358

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