ZF 4657.056.136 6 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.056.136 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-matched assembly designed for heavy-duty off-highway machinery. As a core component of the WG 210 Series, this complete unit delivers reliable torque management and smooth gear transitions under extreme load conditions. The SKU 4657.056.136 represents the entire gear train assembly, including the main shaft, clutch packs, and planetary gear sets, all housed within a precision-machined casing. This assembly directly interfaces with the TRANSMISSION HOUSING to form the structural backbone of the drivetrain, ensuring proper alignment of all rotating elements.

Symptoms of Failure

• Delayed or harsh engagement: When the assembly wears, operators notice a pronounced lag between shifting and actual gear engagement, often accompanied by a jarring clunk.
• Intermittent power loss under load: Worn internal clutches cause the transmission to momentarily slip, particularly when climbing grades or pushing heavy material.
• Contaminated transmission fluid: Debris from degraded friction discs or bearings circulates through the system, turning the oil dark and metallic-smelling.
• Audible whining or grinding noises: Damaged planetary gears produce a high-pitched whine that increases with engine RPM, indicating imminent internal failure.

Technical Specifications

Compatibility

This complete unit is specifically engineered for the ZF WG 210 Series of powershift transmissions. It is directly compatible with the following ZF models: WG 180, WG 200, WG 210, and WG 250 series. The assembly is designed to bolt directly to the HOUS.FRONT SECT and the HOUSING REAR PART, with the HOUSING REAR SECTION completing the enclosure. It is commonly found in articulated dump trucks, wheel loaders, and heavy forklifts from manufacturers such as Volvo, Caterpillar, and Liebherr that utilize ZF drivetrains.

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