86984097 TRAMMISION ASSY ( CNH Original )

The 86984097 TRANSMISSION ASSY is a complete original CNH transmission assembly designed for CASE 580 M Series backhoe loaders. This heavy-duty transmission unit controls machine movement, gear shifting, torque transfer, and power delivery between the engine and drivetrain.

This assembly includes the valve and control system required for smooth forward and reverse operation during loader and backhoe work.

Compatible Models:

• CASE 580 M
• CASE 580 SUPER M
• CASE 580 M SERIES 2
• CASE 580 SUPER M SERIES 2
• CASE 580 M SERIES 3
• CASE 580 SUPER M SERIES 3

Main Functions:

• Transfers engine power to drivetrain
• Controls forward and reverse movement
• Provides smooth gear shifting
• Supports heavy-duty digging and loading operation
• Maintains hydraulic transmission pressure

Common Problems:

• Transmission slipping
• No forward or reverse movement
• Delayed gear engagement
• Abnormal transmission noise
• Oil leakage
• Overheating transmission system
• Weak pulling power

Signs Replacement or Overhaul Is Needed:

• Machine cannot move properly
• Jerking during gear shifting
• Burning smell from transmission oil
• Loss of hydraulic transmission pressure
• Metal particles found in transmission oil
• Excessive vibration or noise

This genuine CNH transmission assembly is critical for maintaining reliable machine movement, working efficiency, and long-term durability in heavy construction operations.

86984097 TRANSMISSION ASSY（CNH 原装变速箱总成） 是适用于 CASE 580 M 系列挖土机的重要动力传动系统总成。

此总成负责将发动机动力传输至驱动系统，并控制机器前进、后退及换档操作，适合重型装载与挖掘工作。

适用型号：

• CASE 580 M
• CASE 580 SUPER M
• CASE 580 M SERIES 2
• CASE 580 SUPER M SERIES 2
• CASE 580 M SERIES 3
• CASE 580 SUPER M SERIES 3

主要功能：

• 传输发动机动力
• 控制前进与后退
• 提供平稳换档
• 支持重型挖掘与装载作业
• 维持液压变速系统压力

常见问题：

• 变速箱打滑
• 无法前进或后退
• 换档延迟
• 变速箱异响
• 漏油问题
• 变速系统过热
• 拉力不足

需要更换或大修的迹象：

• 机器无法正常移动
• 换档时严重顿挫
• 变速油出现烧焦味
• 液压压力不足
• 油内出现金属碎片
• 震动或噪音过大

原装 CNH 变速箱总成对于维持机器动力、工作效率及长期耐用性非常重要