Overview
The ZF 4657.056.143 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in ready drivetrain component engineered for heavy-duty off-highway machinery. This complete unit integrates the main gear cluster, clutch packs, and hydraulic control system within a single, sealed assembly. As the core power transfer module in the WG 210 series, it converts engine torque into controlled, multi-speed output for loaders, graders, and industrial vehicles. The SKU 4657.056.143 identifies this as a factory-matched assembly, ensuring precise alignment of all internal rotating elements. When installing this unit, the surrounding structural integrity is maintained by the 4657101082: TRANSMISSION HOUSING, which encloses the entire gear train.
Symptoms of Failure
When the ZF 4657.056.143 assembly begins to fail, operators will notice distinct performance degradation. Watch for these specific failure indicators:
- Delayed or harsh engagement: A noticeable lag when shifting between forward and reverse, often accompanied by a loud clunk, indicates worn clutch discs or hydraulic pressure loss within the assembly.
- Torque converter shudder: A vibration or shudder during low-speed maneuvering under load, suggesting internal wear in the stator or turbine components of the complete unit.
- External oil seepage at mating flanges: Leaks originating from the joint between the assembly and the 4657201166: HOUS.FRONT SECT or the 4657201170: HOUSING REAR PART indicate seal failure and require immediate attention.
- Intermittent gear slipping: A sudden loss of power under heavy load, where engine RPM rises without corresponding vehicle speed, points to worn clutch packs or a failing one-way clutch inside the assembly.
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Complete Powershift Transmission Assembly |
| ZF Series | WG 210 |
| 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 (GGG-40) |
| OEM Reference | ZF 4657.056.143 |
| Torque Capacity (max) | 1,200 Nm |
| Number of Speeds | 6 Forward / 3 Reverse |
Compatibility
This 4657.056.143 assembly is specifically designed for the ZF WG 210 transmission series. It is directly compatible with models including the WG 180, WG 200, and WG 210 when used as a complete replacement unit. The assembly also integrates with the 4657298102: HOUSING REAR SECTION for extended tail configurations. It is commonly found in ZF drivelines powering Volvo L120, L150, and Caterpillar 950 series wheel loaders, as well as certain Terex and Case heavy equipment models.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural enclosure for the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft and converter |
| 4657201170 | HOUSING REAR PART | Rear housing section supporting output shaft |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO or auxiliary drives |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Locking plate for gear retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump return |
| 0636100803 | CAP SCREW | High-tensile bolt for clutch pack retention |
