ZF 4657.024.110 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

This ZF 4657.024.110 4 WG 190 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. As the core power transfer module in the WG 190 series, this assembly integrates the torque converter, planetary gear sets, and clutch packs into a single, ready-to-install package. The SKU 4657.024.110 is engineered to deliver precise hydraulic shifting under extreme loads, making it a direct replacement for worn or failed assemblies in construction, mining, and agricultural machinery. When paired with a robust TRANSMISSION HOUSING, this unit ensures optimal alignment and oil distribution across all rotating components.

Symptoms of Failure

• Erratic or delayed gear engagement: When the internal clutch packs or valve body wear, operators experience hesitation when shifting between forward and reverse, often accompanied by a hard “clunk.”
• Torque converter shudder at low RPM: A pronounced vibration during inching or under light load indicates worn stator bearings or damaged turbine splines within the assembly.
• External oil seepage from the bell housing: Leaks typically originate from degraded seals where the assembly meets the HOUS.FRONT SECT or the HOUSING REAR PART, leading to low fluid levels and eventual gear slip.
• Loss of power under load: If the transmission slips or overheats during heavy pushing or hauling, the internal piston seals have likely failed, bypassing hydraulic pressure.

Technical Specifications

Compatibility

This complete assembly is specifically designed for the ZF WG 190 series powershift transmissions. It is a direct fit for models including the WG 180, WG 190, and WG 200, which are commonly used in wheel loaders, forklifts, and telehandlers. The unit also interfaces with the HOUSING REAR PART (variant 4472239185) for PTO mounting configurations. Always verify the bell housing pattern and input shaft spline count against your existing unit before installation.

Related Components

Frequently Asked Questions

Q: Does the 4657.024.110 include the torque converter?
A: Yes, this complete unit ships with the torque converter, all clutch packs, and the valve body pre-installed. It is a drop-in assembly requiring only external fluid connections and linkage setup.

Q: Can this assembly be used to replace a WG 180 unit?
A: In most cases, yes. The 4 WG 190 shares the same bolt pattern and input spline as the WG 180, but you must check the overall length and PTO housing compatibility, particularly if your machine uses the HOUSING REAR PART variant.

Q: What is the typical lifespan of this assembly under normal operating conditions?
A: With proper maintenance (clean oil, correct pressure settings, and regular filter changes), this unit can exceed 8,000 hours. Common wear items like the SCREEN SHEET filters should be replaced every 1,000 hours to prevent contamination damage.