31LC-00200 Gear Pump For Hyundai HL760-9S wheel loader

31LC-00200 Gear Pump For Hyundai HL760-9S wheel loader Featured Image
  • 31LC-00200 Gear Pump For Hyundai HL760-9S wheel loader

Short Description:

139-6084 hydraulic gear pump is aftermarket replacement spare part for CAT950G wheel loader, also compatible with 960G. It supplies pressurized hydraulic oil for boom lift, bucket tilt and steering circuits.

Product Detail

Product Tags

description

31LC-00200 gear pump serves as main hydraulic power unit for Hyundai HL760-9S wheel loader, driven by engine. It converts mechanical power into pressurized hydraulic fluid for boom, bucket and steering hydraulic systems. Precisely meshed alloy gear pair provides constant flow output. During heavy bucket loading and lifting, the pump maintains steady oil supply to keep working speed consistent; under light load or idle travel, it reduces unnecessary power consumption and heat accumulation.
Internal gear pair, bearing groups and seal assembly adopt high-strength material with precision machining. Cast iron pump housing adopts stress relief annealing to eliminate casting residual stress, resisting vibration and solid particle contamination on quarry and aggregate sites.High-performance FKM fluorine rubber sealing assembly delivers reliable high temperature resistance and anti-aging property, reducing internal volumetric leakage and external oil seepage. Every pump passes full hydraulic bench inspection before shipment, including pressure holding, flow characteristic and wear test. It is fully interchangeable with original 31LC-00200, supporting bolt-on installation for wheel loader overhaul and field maintenance.

product parameters

Part No：31LC-00200
Product Type：Fixed Displacement Hydraulic Gear Pump
Applicable Equipment：Hyundai HL760-9S Wheel Loader, compatible with HL760-7A, HL760-9SB
Control Mode：Fixed displacement gear structure
Displacement：78 cc/rev
Nominal Working Pressure：25 MPa (250 bar)
Max Instantaneous Peak Pressure：30 MPa (300 bar)
Rated Rotation Speed：2300 rpm
Max Allowable Rotation Speed：2600 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +105℃
Main Material：Cast iron housing, alloy steel gear pair, FKM fluorine rubber seal
Surface Treatment：Precision grinding, stress relief annealing, anti-rust coating
Shaft Specification：Original standard splined shaft
Interchangeability：1:1 OEM interchangeable, direct bolt-on installation
Product Condition：Brand new aftermarket part, 100% hydraulic bench tested

advantage

- Optimized gear tooth profile reduces flow fluctuation during continuous stockpile loading
Refined gear tooth design minimizes pressure pulsation when repeatedly piling and transferring aggregates, maintaining smooth boom movement during long shift work.
- Reinforced thick cast pump body withstands frequent impact from heavy stone loading
Thickened integrated cast housing improves rigidity, resisting cyclic shock loads when digging compacted gravel and rock material at quarry sites.
- Balanced flow distribution supports simultaneous boom lifting and bucket curling
Stable constant flow enables compound action of boom and bucket, shortening each loading cycle and improving overall site throughput.
- Optimized internal clearance design suppresses heat rise under long continuous duty
Precision clearance control lowers internal leakage, effectively controlling temperature rise during full-day continuous material loading operation.
- Standard mounting and port layout for quick field replacement
Fully matches OEM mounting holes and oil port arrangement, no extra modification required, greatly shortening machine downtime for on-site repair.
- Long-duration stockpile loading cycle bench test simulating aggregate yard operation
Each pump undergoes cyclic loading test simulating bulk aggregate stacking and transfer, verifying stable performance under repetitive heavy-duty cycles.

FAQ 

Q1: Which machine does 31LC-00200 gear pump fit?
A1: This hydraulic gear pump fits Hyundai HL760-9S wheel loader, compatible with HL760-7A and HL760-9SB. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this pump support?
A2: It provides hydraulic oil for boom lifting, bucket tilt and steering system, completing bulk aggregate loading, stockpiling and material transfer work.

Q3: What are typical failure symptoms of worn pump?
A3: Typical symptoms: slower boom lifting speed under heavy load, unstable bucket curling during stone loading, obvious vibration and noise at high pressure, continuous temperature rise after long working hours, shaft seal oil leakage.

Q4: What inspections should be done before installing new pump?
A4: Inspect boom cylinders, bucket cylinder, main control valve and filter elements. Fully flush hydraulic tank and pipelines to remove metal debris. Replace degraded hydraulic oil before assembly.

Q5: Why loader still moves slowly after pump replacement?
A5: The fault may not come from pump. Check relief valve calibration, stuck valve spool, clogged filter, damaged cylinder seals or trapped air inside hydraulic circuit. Air bleeding must be completed after installation.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

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