ZF 4657.024.170 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

This ZF 4657.024.170 4 WG 190 Powershift Transmission Assembly is a complete, ready-to-install unit engineered for heavy-duty industrial applications. As a core component of the WG 190 series, this assembly integrates the main gear train, clutch packs, and hydraulic control system into a single robust package. The SKU 4657.024.170 replaces worn or failed complete transmissions, restoring full power transfer and shift performance in loaders, dozers, and material handlers. It sits at the heart of the drivetrain, connecting the engine to the final drives, and is precision-machined to OEM tolerances for direct bolt-on installation.

Symptoms of Failure

When the ZF 4657.024.170 assembly begins to fail, operators often notice delayed or harsh gear engagement during shifting, especially under load. Another common sign is internal oil leaks that appear as puddles under the bell housing or around the output shaft seal. You may also experience intermittent power loss or gear slipping during uphill operation, indicating worn clutch discs or damaged seals within the unit. Finally, unusual grinding or whining noises from the transmission housing often signal bearing fatigue or gear tooth damage inside the assembly.

Technical Specifications

Compatibility

This complete unit 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, commonly found in construction and agricultural machinery. The assembly also integrates with earlier WG 170 variants when used with the correct adapter kit. Always verify your transmission model number before ordering to ensure proper fitment.

Related Components

When replacing the complete transmission assembly, it is recommended to inspect and replace the following companion parts. The 4657101078: TRANSMISSION HOUSING provides the main structural support, while the 4657201166: HOUS.FRONT SECT and 4657201168: HOUSING REAR PART enclose the gear sets. Additionally, the 4657298101: HOUSING REAR SECTION seals the output area. Use the table below for a full list of supporting parts.

Frequently Asked Questions

Q: Can the 4657.024.170 assembly be installed without replacing the housing?
A: Yes, but it is strongly recommended to inspect the TRANSMISSION HOUSING for cracks or wear. If damage is found, replace it to prevent future leaks or misalignment.

Q: What is the typical lifespan of this complete unit?
A: Under normal operating conditions with regular oil changes, the ZF 4657.024.170 can last 8,000 to 12,000 hours. Harsh environments or heavy loads may reduce this interval.

Q: Does this assembly include the front and rear housing sections?
A: No, it is a complete internal assembly. You will need to order the HOUS.FRONT SECT and HOUSING REAR PART separately if they are damaged.