Overview
The ZF 4657.056.144 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. This assembly integrates the main gear cluster, clutch packs, and hydraulic control elements into a single, ready-to-install package. As the core power transfer module in the WG 210 series, it converts engine torque into precise, shift-on-the-fly output for wheel loaders, graders, and industrial tractors. The SKU 4657.056.144 replaces worn or failed assemblies, restoring full driveline integrity. This unit mounts directly to the 4657101082: TRANSMISSION HOUSING and interfaces with the 4657201166: HOUS.FRONT SECT to form the primary structural shell.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or hydraulic seal degradation inside the assembly cause delayed shifts or complete loss of drive in specific ranges.
- Internal metallic noise or grinding: Bearing fatigue or gear tooth spalling within the 4657.056.144 produces a distinct whine or rattle, especially during directional changes.
- Transmission fluid contamination with debris: Friction material shedding from the power shift clutches turns the oil dark and gritty, often visible on the dipstick or filter.
- Intermittent loss of hydraulic pressure: Internal valve body wear or seal failure leads to low clutch apply pressure, causing the transmission to default to neutral or fail to hold a gear on inclines.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4657.056.144 |
| Assembly Type | 6-Speed Powershift (Complete Unit) |
| OEM Reference | ZF WG 210 |
| Estimated Weight | 185 kg (408 lbs) |
| Housing Material | High-Grade Cast Iron (GGG-40) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Torque Capacity | 850 Nm (627 lb-ft) |
| Clutch Type | Multi-disc, Oil-Cooled |
Compatibility
This complete assembly is engineered for the ZF WG 210 series and is also backward-compatible with select earlier WG 200 and WG 180 models when used with the correct adapter components. It directly replaces units in WG 210-6, WG 210-8, and WG 210-10 configurations. For proper installation, ensure the 4657201170: HOUSING REAR PART and the 4657298102: HOUSING REAR SECTION are inspected for wear, as these mate directly to the rear of the 4657.056.144 assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4657201166 | HOUS.FRONT SECT | Front section housing input shaft and pump drive |
| 4657201170 | HOUSING REAR PART | Rear section supporting output flange and bearings |
| 4657298102 | HOUSING REAR SECTION | Extended rear cover for PTO or auxiliary drive |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing-to-assembly positioning |
| 0636100801 | CAP SCREW | M12 fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Locking plate for clutch piston retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for suction line |
| 0636100803 | CAP SCREW | M10 fastener for valve body attachment |
