79914144 Gear Pump For CASE 580 backhoe loader

Short Description:

31LC-00200 hydraulic gear pump is aftermarket replacement spare part for Hyundai HL760-9S wheel loader, also compatible with HL760-7A and HL760-9SB.

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Product Detail

Product Tags

description

product parameters

Part No：79914144
Product Type：Fixed Displacement Double Hydraulic Gear Pump
Applicable Equipment：CASE 580 Backhoe Loader, compatible with 580N,580SN,580L,580M,580SL,580SM
Control Mode：Fixed displacement dual gear structure
Displacement：34cc+22cc/rev
Nominal Working Pressure：25 MPa (250 bar)
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
Interchangeability：1:1 OEM interchangeable, direct bolt-on installation
Packaging：Independent anti-rust packaging + export wooden case
Storage Environment：Dry indoor storage, moisture-proof, impact-proof, anti-corrosive gas

advantage

- Dual independent flow circuit separates digging and loading hydraulic supply
Two separate pumping sections deliver oil for backhoe and loader individually, reducing flow interference when operating front and rear attachments at the same time.
- Reinforced cast body withstands frequent alternating impact of digging and loading
Robust integrated cast housing is designed for backhoe working mode, resisting cyclic shock loads when switching between trenching and material loading.
- Optimized gear profile lowers noise and pressure pulsation under mixed operation
Refined gear tooth profile reduces vibration and flow fluctuation during compound movement of boom and digging arm, improving operation smoothness.
- Separated oil channel design suppresses heat accumulation during long-shift mixed work
Dual flow channel structure distributes heat load reasonably, preventing excessive temperature rise under long-hour alternating digging and loading cycles.
- Fully matched OEM mounting and port layout for fast on-site replacement
Direct bolt-on replacement without modification, perfectly matching original mounting holes and oil port arrangement, shortening machine downtime.

FAQ

Q1: Which machine does 79914144 gear pump fit?
A1: This hydraulic double gear pump fits CASE 580 backhoe loader, compatible with 580N,580SN,580L,580M,580SL,580SM. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this pump support?
A2: It provides hydraulic oil for front loader boom, front bucket, rear digging arm, rear bucket and steering system, completing municipal trenching, excavation and bulk material loading.

Q3: What are typical failure symptoms of worn pump?
A3: Typical symptoms: uneven speed between front loader and backhoe, insufficient digging force on hard soil, obvious vibration and noise under compound action, continuous temperature rise after long mixed operation, shaft seal oil leakage.

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

Q5: Why backhoe still performs poorly 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.