ZF 4657.024.113 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

This ZF 4657.024.113 4 WG 190 Powershift Transmission Assembly is a complete, ready-to-install unit designed for heavy-duty industrial applications. As the core power transfer module in the WG 190 series, it integrates the main gear sets, clutch packs, and hydraulic controls into a single, pre-assembled housing. The SKU 4657.024.113 replaces worn or failed assemblies, restoring full torque capacity and shift precision in loaders, graders, and material handlers. It sits directly between the engine flywheel and the final drive, managing gear engagement under high stress. For a full rebuild, this assembly mates with the 4657101051: TRANSMISSION HOUSING and the 4657201151: HOUS.FRONT SECT to seal the internal components.

Symptoms of Failure

• Delayed or harsh shifting under load: When the internal clutch packs or valve body wear, the 4 WG 190 assembly may hesitate or slam into gear, especially during directional changes. This is a common search query for “ZF powershift transmission slipping.”
• External oil leaks near the housing seam: Cracks or gasket failure in the main casing cause fluid loss. Inspect the 4657201103: HOUSING REAR PART and the 4472239184: HOUSING REAR PART for stress fractures.
• Loss of power in higher gears: Worn planetary gears or damaged screens reduce hydraulic pressure, leading to “ZF transmission won’t move in 3rd or 4th gear” complaints.
• Unusual whining or grinding noises: Bearing failure or debris contamination inside the assembly produces metallic sounds during operation.

Technical Specifications

Compatibility

This complete unit is engineered for the ZF WG 190 series, but it also fits select models in the WG 180 and WG 200 families due to shared bellhousing patterns and spline counts. It is commonly used in ZF 4 WG 190, 4 WG 180, and 4 WG 200 transmissions found in industrial loaders and telescopic handlers. Always verify the housing alignment using the 4656301148: FIXING PLATE and the 4657301032: SCREEN SHEET for proper oil flow.

Related Components

Frequently Asked Questions

Q: Can the 4657.024.113 assembly be rebuilt, or is it only sold as a complete unit?
A: This SKU is a complete, pre-assembled unit designed for direct replacement. However, individual internal components like the 4657301033: SCREEN SHEET and the 0636100803: CAP SCREW are available separately for service work.

Q: What is the typical lifespan of this 4 WG 190 assembly in a wheel loader?
A: With proper maintenance and clean hydraulic fluid, the unit often exceeds 8,000 operating hours. Regular inspection of the 4656301148: FIXING PLATE and screens helps prevent premature wear.

Q: Does this complete unit include the housing sections?
A: No, the 4657.024.113 is the internal gear and clutch assembly only. You must order the 4657101051: TRANSMISSION HOUSING and the 4657201151: HOUS.FRONT SECT separately if needed.