Overview
The ZF 4657.056.109 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 components into a single, ready-to-install package. As the core power transfer module in the WG 210 series, it replaces the entire rotating assembly within the main case. The SKU 4657.056.109 is a direct OEM reference for this complete unit, ensuring that all internal clearances and clutch timing are pre-set for reliable operation in wheel loaders, dozers, and graders.
Symptoms of Failure
- Erratic gear engagement or slipping under load: When the internal clutch packs or sprag clutches wear, the transmission will hesitate or slip when shifting into forward or reverse, particularly under heavy torque.
- Low hydraulic pressure or delayed response: A failing assembly often causes a drop in main pressure, leading to a 2-3 second delay between moving the lever and the machine actually moving.
- Metallic debris in the oil filter or magnetic plug: Worn bearings or gear teeth from the 4657.056.109 unit will shed metal particles, which can be detected during routine oil changes.
- Overheating transmission fluid: Internal friction from a failing assembly generates excessive heat, often triggering warning lights or causing the fluid to darken and smell burnt.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.109 |
| Assembly Type | Complete Powershift Unit (6-speed) |
| Series | WG 210 |
| Estimated Dry Weight | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 4657.056.109 |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 transmission series. It is also compatible with the WG 180 and WG 200 series when used with the appropriate TRANSMISSION HOUSING (4657101080). For installations requiring a specific front section, the HOUS.FRONT SECT (4657201167) is required to align the input shaft. In longer chassis configurations, the HOUSING REAR PART (4657201171) or the HOUSING REAR SECTION (4657298103) must be used to complete the assembly. Always verify your existing housing configuration before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural case for the assembly |
| 4657201167 | HOUS.FRONT SECT | Front housing section for input shaft support |
| 4657201171 | HOUSING REAR PART | Rear housing section for output shaft |
| 4657298103 | HOUSING REAR SECTION | Alternate rear housing for extended configurations |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for housing bolts (M12) |
| 4656301148 | FIXING PLATE | Locks bearing or gear in position |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh filter for suction line |
| 0636100803 | CAP SCREW | Fastener for rear housing (M16) |
