ZF 4657.024.016 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

This complete ZF 4657.024.016 4 WG 190 Powershift Transmission Assembly is a fully assembled unit designed for heavy-duty off-highway applications. It serves as the primary torque-converter and gearbox assembly, integrating the forward/reverse clutch packs and planetary gear sets. The SKU 4657.024.016 is a direct replacement for the original WG 190 series unit, ensuring seamless installation. This assembly sits between the engine flywheel and the final drive, managing power distribution across four forward and three reverse speeds. For structural integrity, the assembly relies on the 4657101033: TRANSMISSION HOUSING as its main casing, which supports all internal components.

Symptoms of Failure

• Delayed or harsh engagement: When the unit wears, you may experience a noticeable lag when shifting from neutral to drive or reverse, often accompanied by a jarring clunk. This is a classic sign of internal clutch pack wear or hydraulic pressure loss.
• Oil leaks from the housing seam: A common failure point is the seal between the front and rear sections. If you observe fluid dripping near the bell housing, the 4657201027: HOUS.FRONT SECT or the 4657201012: HOUSING REAR PART may have developed cracks or gasket failure.
• Gear slipping under load: The transmission may momentarily lose power during uphill climbs or heavy hauling, indicating worn clutch discs or a failing torque converter stator.
• Unusual whining or grinding noises: A high-pitched whine from the transmission area often points to bearing failure, while grinding suggests damaged planetary gears or a misaligned 0631306792: CYLINDRICAL PIN that secures the clutch drum.

Technical Specifications

Compatibility

This complete unit is specifically engineered for the ZF WG 190 series. It is a direct fit for the WG 190, WG 191, and WG 192 models commonly found in telescopic handlers, wheel loaders, and forklifts. While it shares mounting patterns with the WG 180 and WG 200 series, internal clutch pack configurations differ; always verify your existing transmission model tag. The assembly integrates with the 4657101033: TRANSMISSION HOUSING and the 4657201027: HOUS.FRONT SECT to ensure proper alignment with the engine bell housing.

Related Components

Frequently Asked Questions

Q: Can I use this 4657.024.016 assembly in a WG 180 series machine?
While the bolt pattern is similar, the WG 190 has a different torque converter stall speed and clutch pack count. We recommend verifying your original transmission model tag before ordering.

Q: What is the typical lifespan of this complete unit?
With proper maintenance and clean hydraulic oil, this assembly can last 8,000–12,000 operating hours in heavy-duty applications. Regular inspection of the 4657301032: SCREEN SHEET is critical to prevent contamination damage.

Q: Does this unit include the torque converter?
Yes, the complete assembly includes the torque converter, all clutch packs, and the planetary gear set. It does not include external components like the 4681301040: OIL FEED.HOUSG., which must be ordered separately if needed.