Overview
The ZF 4657.056.105 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated drop-in solution designed for heavy-duty off-highway machinery. This complete assembly serves as the central power distribution hub within the WG 210 series, managing torque conversion and gear selection under extreme load conditions. The SKU 4657.056.105 represents a factory-matched unit that includes the main gear cluster, clutch packs, and hydraulic control system. When replacing this assembly, it is critical to inspect the surrounding structural components, such as the 4657101080: TRANSMISSION HOUSING, which provides the rigid foundation for the entire drivetrain. Additionally, the front and rear sections must be verified for wear; the 4657201167: HOUS.FRONT SECT and the 4657201171: HOUSING REAR PART are common companion units that seal the assembly against contamination.
Symptoms of Failure
- Delayed or harsh engagement: When the 6 WG 210 unit begins to fail, operators often report a noticeable lag between shifting and actual gear engagement, accompanied by a jarring clunk. This indicates internal clutch pack wear or hydraulic pressure loss within the complete assembly.
- Torque converter shudder under load: A persistent vibration or shudder during acceleration, particularly in forward gears, suggests that the stator or turbine components inside the 4657.056.105 have degraded. This symptom is frequently searched as “ZF powershift shudder fix.”
- External oil seepage at bell housing: Leaks originating from the mating surfaces between the transmission and the engine are a clear sign that the main seal or housing gasket has failed. This often requires simultaneous replacement of the 4657298103: HOUSING REAR SECTION to prevent recurring fluid loss.
- Intermittent loss of drive in low range: If the machine suddenly loses power in low gear but operates normally in higher ranges, the planetary gear set within the complete unit is likely suffering from broken lugs or worn bearings.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4657.056.105 |
| Assembly Type | Complete Powershift Unit |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-grade cast iron (GGG-40) |
| OEM Reference | ZF 6 WG 210 |
| Max Input Torque | 2,100 Nm |
| Number of Speeds | 6 forward / 3 reverse |
| Related Fastener | 0636100801: CAP SCREW |
| Related Pin | 0631306816: CYLINDRICAL PIN |
| Related Plate | 4656301148: FIXING PLATE |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 series powershift transmissions. It is directly compatible with the following ZF models: WG 180, WG 200, and WG 210. The assembly also fits select variants of the WG 160 and WG 250 series when used with the appropriate adapter kit. For proper installation, always pair this unit with the correct 4657301034: SCREEN SHEET and 4657301035: SCREEN SHEET to protect the hydraulic circuit from debris. Use the 0636100803: CAP SCREW for securing the rear cover.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for gear support |
| 4657201167 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201171 | HOUSING REAR PART | Rear section for output shaft support |
| 4657298103 | HOUSING REAR SECTION | Alternative rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating |
| 0636100801 | CAP SCREW | Fastener for cover plates |
| 4656301148 | FIXING PLATE | Secures clutch pack assembly |
| 4657301034 | SCREEN SHEET | Hydraulic filter screen (fine) |
| 4657301035 | SCREEN SHEET | Hydraulic filter screen (coarse) |
| 0636100803 | CAP SCREW | Fastener for rear housing |
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