ZF 4657.024.116 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

This complete ZF 4657.024.116 4 WG 190 Powershift Transmission Assembly is a fully integrated unit designed for heavy-duty off-highway applications. As the core of the WG 190 Series, this assembly manages torque distribution across four forward and reverse speeds, ensuring smooth clutch engagement under load. The SKU 4657.024.116 represents a factory-matched unit that includes the main gear set, clutch packs, and valve body. It sits between the engine bellhousing and the final drive, directly interfacing with the 4657101051: TRANSMISSION HOUSING to form the structural backbone of the driveline. This assembly is critical for maintaining hydraulic pressure and gear alignment in loaders, graders, and industrial tractors.

Symptoms of Failure

• Delayed engagement or gear slipping under load — Worn clutch discs or degraded seals inside the assembly cause hesitation when shifting from neutral to drive, often accompanied by a momentary loss of power during acceleration.
• External oil leaks at housing seams — Cracks or gasket failure in the 4657201151: HOUS.FRONT SECT or the 4657201103: HOUSING REAR PART allow transmission fluid to escape, leading to low pressure and eventual overheating.
• Abnormal whining or grinding noises — Bearing wear or gear tooth damage within the assembly produces metallic sounds that intensify with engine RPM, indicating imminent internal failure.
• Erratic shifting or stuck in gear — Hydraulic circuit blockages or valve spool wear prevent the transmission from disengaging properly, causing the vehicle to lurch or refuse to shift out of a selected range.

Technical Specifications

Compatibility

This assembly is engineered specifically for the ZF WG 190 Series, including the 4 WG 190 variant. It is also compatible with the WG 180 Series and WG 200 Series when used with the appropriate adapter plates and the 4472239184: HOUSING REAR PART. Applications include Volvo L70/L90 loaders, Case 921E wheel loaders, and John Deere 744K graders. Always verify bellhousing bolt patterns and input shaft spline count before installation.

Related Components

Frequently Asked Questions

Q: Can the ZF 4657.024.116 be rebuilt, or must it be replaced as a complete unit?
A: While individual clutch packs and seals can be replaced, the 4657.024.116 is typically sold as a complete assembly to ensure matched tolerances. Rebuilding requires specialized press tools and access to the HOUS.FRONT SECT and rear housing alignment fixtures.

Q: What is the typical lifespan of this transmission assembly in a wheel loader?
A: Under normal operating conditions with proper fluid changes every 1,000 hours, the 4 WG 190 assembly can last 8,000–12,000 hours. Symptoms like gear slipping or oil leaks around the HOUSING REAR PART indicate it is time for replacement.

Q: Does this unit include the torque converter?
A: No, the 4657.024.116 is the transmission assembly only. The torque converter is a separate component. You will need to verify compatibility with your existing converter or order a matched set.