The 87751598 Genuine Main Pump is an OEM-standard hydraulic pump used on a wide range of Case 580 Series backhoe loaders, including M Series 2, Super M Series 2, M Series 3, Super M Series 3, Case 580 N, and Case 580 Super N. This pump is responsible for supplying consistent hydraulic pressure to the loader, backhoe, steering, and auxiliary hydraulic circuits, ensuring smooth, powerful, and stable machine operation.

Designed and manufactured by CNH Original, this pump provides the highest level of reliability, durability, and performance — matching factory specifications and ensuring perfect compatibility with your machine.

+P Key Features & Benefits

• OEM Genuine CNH Pump
  Provides factory-level reliability and long service life.

• High-Pressure & High-Flow Performance
  Ensures strong hydraulic output for demanding lifting, digging, and steering operations.

• Stable Steering & Loader Control
  Maintains smooth steering feedback and responsive joystick control.

• Reduced Leakage & Low Noise Operation
  Precision-built internal components reduce wear and noise.

• Prolongs Life of Hydraulic System Components
  Proper hydraulic pressure prevents premature wear of hoses, valves, and cylinders.

+P Why This Pump Is Important

The main pump is the heart of the hydraulic system. When the pump becomes weak, operators may experience:

• Slow boom raising or bucket movements

• Weak digging force

• Jerky or inconsistent steering

• Overheating hydraulic oil

• Increased fuel consumption

Replacing with 87751598 Genuine CNH ensures the machine returns to its full factory performance.

� Compatible Models

• Case 580 M Series 2 (580 M2)

• Case 580 Super M Series 2 (580 SM2)

• Case 580 M Series 3 (580 M3)

• Case 580 Super M Series 3 (580 SM3)

• Case 580 N

• Case 580 Super N

� Applications

• Main Hydraulic Pump Replacement

• Steering Valve Hydraulic Pump

• Complete Hydraulic Power Restoration

耔耋 中文 – 长描述

87751598（原装 CNH）主液压泵 / 转向液压阀

87751598 原装主泵适用于多款 Case 580 系列挖掘装载机，包括 580 M2、580 Super M2、580 M3、580 Super M3、580 N、580 Super N。此主泵负责供应整机液压压力，包括装载臂、挖斗、转向系统和辅助液压功能，确保机器运作顺畅、有力、稳定。

由 CNH 原厂制造，性能可靠、耐用，完全符合原装规格，确保安装准确、寿命长久。

+P 主要特点与优点

• 原装正品 CNH 主泵
  高品质、耐用、匹配度高。

• 高压力、高流量输出
  适合重载作业，如起重、挖掘、移动物料。

• 提升转向与操作手感
  转向更轻松、动作更顺畅。

• 低噪音、低泄漏设计
  精密加工减少磨损与漏油。

• 延长整体液压系统寿命
  稳定压力减少油缸、阀体、管路的损坏。

+P 更换此主泵可改善的问题

如果旧泵性能下降，机器可能出现：

• 动作缓慢、提升无力

• 转向沉重、不稳定

• 动作抖动

• 液压油过热

• 引擎油耗增加

使用 87751598 原装主泵可以让整机恢复到出厂标准性能。

 

� 适用机型

• Case 580 M Series 2

• Case 580 Super M Series 2

• Case 580 M Series 3

• Case 580 Super M Series 3

• Case 580 N

• Case 580 Super N

� 适用范围

• 主液压泵更换

• 转向主泵维修

• 液压系统动力恢复