ZF 4657.024.018 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.024.018 4 WG 190 Powershift Transmission Assembly is a complete, factory-matched unit engineered for heavy-duty off-highway applications. This assembly serves as the central power distribution hub within the WG 190 series, integrating the torque converter, planetary gear sets, and clutch packs into a single, ready-to-install package. Designed to handle high torque loads in construction, mining, and agricultural machinery, the SKU 4657.024.018 replaces the entire gear train and hydraulic control system to restore original shift quality. It mounts directly between the engine bellhousing and the final drive, with the TRANSMISSION HOUSING providing the structural backbone that aligns all rotating components.

Symptoms of Failure

• Erratic or delayed gear engagement: When the assembly wears internally, operators notice a pronounced lag between shifting commands and actual gear changes, often accompanied by harsh engagement.
• Progressive oil leaks at housing seams: Fatigue in the main casing leads to seepage around the HOUS.FRONT SECT and HOUSING REAR PART interfaces, causing low fluid levels and overheating.
• Metallic grinding noise during power shifts: Worn planetary bearings or damaged clutch discs produce a distinct grinding sound under load, indicating imminent internal failure.
• Loss of forward or reverse drive: Complete hydraulic pressure loss due to internal seal failure prevents the transmission from holding any gear, requiring immediate replacement of the assembly.

Technical Specifications

Compatibility

This complete unit is specifically designed for the ZF WG 190 series powershift transmissions. It is directly compatible with WG 190 models produced after 2005, including the 4 WG 190, 5 WG 190, and 6 WG 190 variants. While the assembly shares mounting patterns with the WG 180 and WG 200 series, internal clutch configurations differ; always verify the SKU 4657.024.018 against your transmission’s serial plate. The assembly integrates with the CYLINDRICAL PIN for precise alignment during installation.

Related Components

Frequently Asked Questions

Q: Can I install this assembly without replacing the torque converter?
A: No. The ZF 4657.024.018 is a complete unit that includes the torque converter as an integrated component. Reusing an old converter with a new assembly risks contamination and premature failure of the clutch packs.

Q: How do I verify this SKU matches my WG 190 transmission?
A: Locate the transmission serial number plate on the left side of the main housing. The model designation (e.g., 4 WG 190) must match, and the assembly number should read 4657.024.018. If your unit has a different suffix, contact our technical team for cross-reference.

Q: What is the typical service life of this assembly under normal operating conditions?
A: With proper fluid maintenance (ZF TE-ML 03 spec oil changed every 500 hours), the assembly typically lasts 8,000–12,000 hours in construction equipment. Harsh applications like rock crushing may reduce this interval by 30%.