ZF 4657.024.131 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

This ZF 4657.024.131 4 WG 190 Powershift Transmission Assembly is a complete, fully assembled unit designed for heavy-duty industrial and off-highway applications. As the core power transfer module in the WG 190 series, this assembly integrates the main gear sets, clutch packs, and hydraulic control components into a single ready-to-install package. The SKU 4657.024.131 serves as the direct replacement for original equipment transmissions in loaders, graders, and material handlers. It interfaces directly with the TRANSMISSION HOUSING to form the structural backbone of the driveline, ensuring precise alignment of all rotating elements.

Symptoms of Failure

• Delayed or harsh gear engagement: When the complete unit wears, operators often experience a noticeable lag or jarring shift when moving from neutral to forward or reverse, indicating internal clutch pack degradation.
• Torque converter shudder under load: A vibration or shudder during acceleration at low speeds suggests internal wear within the transmission assembly, often linked to failing stator or turbine components.
• External oil leaks at housing seams: Fluid weeping from the joint between the HOUS.FRONT SECT and the main body indicates gasket failure or housing distortion, a common symptom of an aging assembly.
• Loss of power in higher gears: Slipping in 3rd or 4th gear under heavy load points to worn clutch discs or seal rings inside the complete unit, requiring immediate replacement.

Technical Specifications

Compatibility

This complete unit is engineered for the ZF WG 190 series of powershift transmissions. It is directly compatible with the WG 190 model and shares mounting interfaces with the WG 180 and WG 200 variants when used with the correct adapter components. The assembly is designed to work with the HOUSING REAR PART and the HOUSING REAR SECTION for complete driveline integration. It is commonly found in ZF 4WG-190, 4WG-180, and 4WG-200 systems used in construction and mining equipment.

Related Components

Frequently Asked Questions

Q: Is the ZF 4657.024.131 a direct bolt-in replacement for my existing WG 190 transmission?
A: Yes, this complete unit is a factory-assembled replacement for the ZF 4 WG 190 powershift transmission. It includes all internal components and requires no additional modification for standard applications, provided your vehicle uses the same bellhousing pattern.

Q: What other parts should I inspect when installing this complete transmission assembly?
A: It is strongly recommended to replace the TRANSMISSION HOUSING gaskets and check the HOUS.FRONT SECT for cracks. Additionally, inspect the FIXING PLATE and both SCREEN SHEET filters for debris to ensure long service life.

Q: Does this unit come with the torque converter installed?
A: The ZF 4657.024.131 is a complete powershift transmission assembly that includes the torque converter, clutch packs, and valve body. It is ready for installation as a sealed unit, though you should verify your specific application requirements for the converter stall speed.