Overview
The ZF 4657.056.047 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. As the core hydraulic-mechanical assembly in the WG 210 series, it integrates the torque converter, planetary gear sets, and clutch packs into a single, pre-assembled housing. This SKU 4657.056.047 replaces the need for individual component rebuilds, ensuring precise alignment of all rotating elements. The assembly sits directly between the engine flywheel and the final drive, managing power flow through six forward and three reverse speeds. For structural integrity, this unit mounts directly to the TRANSMISSION HOUSING, which provides the main support for all internal shafts.
Symptoms of Failure
- Erratic gear engagement under load: When the complete unit wears, operators report delayed or harsh shifting during grading or loading cycles, often accompanied by a momentary loss of tractive effort.
- Internal hydraulic pressure loss: A failing assembly can cause the transmission to slip in higher gears, particularly when climbing grades, as internal seal rings degrade and allow clutch pack pressure to bleed off.
- Contaminated oil with metallic debris: Worn clutch plates or bearing surfaces within the assembly generate fine metal particles visible in the oil filter or drain pan, indicating imminent failure of the rotating groups.
- Audible whining or grinding from the bell housing: As the torque converter and gear train lose alignment, a distinct high-pitched noise may develop, worsening with temperature increases.
Technical Specifications
| Parameter | Value |
|---|---|
| Assembly Weight (dry) | Approx. 185 kg (408 lbs) |
| Overall Length (input to output flange) | 620 mm |
| Overall Width (mounting pad to pad) | 480 mm |
| Overall Height (pan rail to top cover) | 410 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| OEM Reference | ZF 4657.056.047 / 6 WG 210 |
| Max Input Torque | 2,100 Nm (1,549 lb-ft) |
| Oil Capacity (system total) | 28 liters |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 series powershift transmissions. It is directly compatible with models including the WG 180, WG 200, and WG 210, as well as the higher-capacity WG 211 variants found in wheel loaders, telehandlers, and dump trucks from manufacturers such as Liebherr, Volvo, and JCB. The assembly requires the HOUS.FRONT SECT to seal the torque converter cavity and the HOUSING REAR PART to enclose the output shaft. During installation, the CYLINDRICAL PIN must be used to align the housing sections precisely before final torquing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front cover for torque converter area |
| 4657201012 | HOUSING REAR PART | Rear enclosure for output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | Fastener for housing flanges |
| 4656301148 | FIXING PLATE | Retains clutch pack springs |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary mesh filter for sump |
| 0636100803 | CAP SCREW | Fastener for valve body cover |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil distribution manifold |
