Brand
CNH Original (Genuine) – manufactured for CNH Industrial
CASE 580 SUPER M Series 2
CASE 580 SUPER M Series 3
CASE 580 SUPER N
The 87400112 Genuine CNH Torque Converter is a critical hydraulic drive component in the transmission system of CASE 580 Super M2, Super M3 and Super N backhoe loaders.
It transfers engine power to the transmission through hydraulic coupling, allowing smooth machine movement, controlled torque multiplication and reduced shock loads during gear engagement.
This unit is designed to meet original factory specifications for:
internal turbine and stator geometry
hydraulic oil flow and pressure behaviour
heat resistance and rotational balance
It is a direct-fit replacement for machines using CNH torque converter assembly and is commonly supplied under part number 87400112, with related CNH reference 87702192.
Genuine CNH factory specification
Designed specifically for CASE 580 Super M2 / M3 / Super N transmission systems
Smooth power transfer and stable machine drive
Proper torque multiplication under heavy digging and loading conditions
Balanced and tested for vibration and durability
Direct installation – no modification required
Related CNH part number: 87702192
Always confirm serial range before installation
Common symptoms related to a faulty torque converter include:
Machine moves slowly even when engine RPM is high
Loss of pushing power under load
Overheating of transmission oil
Shuddering or vibration during movement
Delayed engagement when shifting from neutral to drive
Abnormal noise coming from the bell housing area
Possible causes
Internal stator clutch failure
Hydraulic oil contamination damaging internal vanes
Excessive heat leading to seal or bearing wear
Long-term operation with low transmission oil level
Important installation notes
Always flush transmission and oil cooler lines before installation
Replace transmission filter together with torque converter
Use correct CNH-approved transmission oil
Inspect flex plate and drive coupling for wear or cracks
零件号码
87400112
相关 / 参考零件号
87702192（CNH）
产品名称
变矩器（扭力转换器）– 变速箱用
品牌
CNH 原厂正品
CASE 580 SUPER M Series 2
CASE 580 SUPER M Series 3
CASE 580 SUPER N
87400112 原厂 CNH 变矩器（Torque Converter） 是 CASE 580 Super M2、Super M3 及 Super N 挖掘装载机变速系统中的核心液压传动部件。
它通过液压耦合方式，将发动机动力平顺地传递至变速箱，实现：
平稳起步
自动扭矩放大
降低换档冲击
保护传动系统
该变矩器按照原厂规格制造，包括内部涡轮、定子结构、油路流量及耐高温设计，确保长期稳定运行。
此型号为原厂直接替换件，对应零件号为 87400112，相关参考件号为 87702192。
CNH 原厂正品规格
专用于 CASE 580 Super M2 / M3 / Super N
动力传输平稳、效率高
重载工况下扭矩输出稳定
动平衡测试，低震动、耐久性高
即装即用，无需改装
相关零件号：87702192
安装前请确认机器序列号
常见故障现象包括：
发动机转速正常但行走无力
推力明显不足
变速箱油温过高
行走时抖动或震动
入档延迟（由空档换入前进或后退）
钟壳位置出现异常噪音
可能原因
内部定子单向离合器损坏
油液污染导致叶片或内部部件磨损
长时间高温运行
长期低油位运行
安装注意事项
更换前必须彻底清洗变速箱及油冷却管路
同时更换变速箱滤芯
使用原厂规格变速箱油
检查飞轮连接盘及传动联轴器是否磨损或开裂
