Overview
The ZF 4657.056.147 6 WG 210 Powershift Transmission Assembly is a complete, fully assembled unit designed for heavy-duty industrial applications. This core assembly integrates the main gear train, clutch packs, and hydraulic control system within a robust housing structure. As a complete unit, the SKU 4657.056.147 replaces the need for individual component sourcing, ensuring precise alignment and OEM-specified tolerances. It sits at the heart of the driveline, transferring engine torque through six forward speeds and one reverse speed. The assembly interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to form the primary structural shell.
Symptoms of Failure
When the ZF 4657.056.147 assembly begins to fail, operators typically notice distinct performance degradation. Delayed gear engagement is a primary symptom, where the transmission hesitates before shifting into forward or reverse, often caused by internal clutch pack wear. Torque converter shudder during low-speed maneuvering indicates hydraulic pressure irregularities within the unit. External oil leaks at the mating surfaces between the assembly and the HOUSING REAR PART are common as seals degrade. Finally, intermittent gear slipping under load, particularly in higher ranges, signals that the complete unit requires replacement to avoid catastrophic driveline failure.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.056.147 |
| Assembly Type | 6 WG 210 Powershift Transmission |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 560 mm |
| Housing Material | High-Grade Cast Iron |
| OEM Reference | ZF 4657.056.147 |
| Bolt Torque Spec (Mating) | 120 Nm (88 lb-ft) |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 series of powershift transmissions. It is directly compatible with the WG 210 model designation. Based on the structural design and mounting points, this assembly is also a direct fit for the WG 180 and WG 200 series transmissions that share the same bellhousing pattern and input shaft spline count. The unit is not compatible with the older WG 120 or WG 150 series without significant modification to the HOUSING REAR SECTION.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing torque converter |
| 4657201170 | HOUSING REAR PART | Rear cover and output shaft support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | M12 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Retaining plate for clutch pack |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for sump return |
| 0636100803 | CAP SCREW | M10 fastener for valve body |
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