Overview
The ZF 4657.056.181 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly serves as the central power distribution hub within the WG 210 series, integrating the torque converter, planetary gear sets, and clutch packs into a single, ready-to-install package. The SKU 4657.056.181 is a direct replacement for worn or failed transmissions in wheel loaders, telehandlers, and industrial tractors. It is critical to ensure that the TRANSMISSION HOUSING is inspected for cracks or warpage when installing this unit, as the housing provides the structural foundation for the entire assembly.
Symptoms of Failure
- Delayed or harsh engagement: When the 4657.056.181 unit wears, operators often report a noticeable lag between shifting and actual gear engagement, followed by a jarring clunk. This indicates worn clutch packs or valve body issues within the assembly.
- Transmission overheating under load: A failing unit will generate excessive heat due to internal slippage. If the transmission temperature gauge spikes during normal operation, the internal seals or bearings in this assembly may be compromised.
- Oil leaks at the bell housing or rear seal: External fluid seepage around the mating surfaces of the HOUS.FRONT SECT or the HOUSING REAR PART is a common failure mode. This often results from degraded gaskets or stress fractures in the casting.
- Intermittent loss of drive in forward gears: A complete unit that is failing internally may cause the machine to suddenly lose power in specific ranges, often accompanied by whining noises from the HOUSING REAR SECTION.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.181 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 210 |
| Number of Speeds | 6 Forward / 3 Reverse |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-Grade Cast Iron |
| OEM Reference | ZF 4657.056.181 |
| Torque Converter Type | Single-Stage, 3-Element |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 series of powershift transmissions. While the WG 210 is the primary application, the internal architecture shares design principles with the WG 180 and WG 200 series. However, the 4657.056.181 is not a direct drop-in replacement for those models without modification to the TRANSMISSION HOUSING and output flange. It is fully compatible with all WG 210 variants used in OEM equipment from manufacturers such as Liebherr, JCB, and Volvo CE. Always verify the bell housing pattern against your existing unit before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing the torque converter |
| 4657201170 | HOUSING REAR PART | Rear casing supporting output shaft bearings |
| 4657298102 | HOUSING REAR SECTION | Extended rear cover for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for front housing section |
| 4656301148 | FIXING PLATE | Locks clutch pack retaining nuts |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil sump |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for pump intake |
| 0636100803 | CAP SCREW | Fastener for rear housing section |
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