Overview
The ZF 4657.056.101 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. This fully assembled transmission integrates the main drive housing, clutch packs, and hydraulic control system into a single, ready-to-install package. As the core power transfer module in the WG 210 series, it manages torque distribution across six forward speeds and one reverse gear. The SKU 4657.056.101 is the direct replacement for original equipment transmissions, eliminating the need for piecemeal component sourcing. This assembly sits between the engine bellhousing and the final drive, converting rotational power into controlled vehicle motion for loaders, graders, and industrial tractors.
Symptoms of Failure
- Erratic gear engagement or slipping under load: When the internal clutch packs or hydraulic seals degrade, the transmission may hesitate before engaging gears or slip during heavy pulling operations.
- Delayed forward/reverse shifting: Worn valve bodies or pressure loss can cause a noticeable lag when switching directions, often accompanied by harsh engagement.
- External oil leaks near the housing joints: Cracks or gasket failures in the TRANSMISSION HOUSING or HOUS.FRONT SECT allow transmission fluid to escape, leading to low pressure and overheating.
- Unusual whining or grinding noises: Bearing wear or gear tooth damage inside the assembly produces audible metal-on-metal sounds, particularly in neutral or during deceleration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.101 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 210 |
| Number of Speeds | 6 Forward / 1 Reverse |
| 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 |
| OEM Reference | ZF 6 WG 210 |
| Max Input Torque | 2100 Nm |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 transmission series. It is also compatible with select models in the WG 180 and WG 200 families when used with the appropriate HOUSING REAR PART and HOUSING REAR SECTION adapters. Common applications include ZF 6WG180, 6WG200, and 6WG210 powershift transmissions found in Volvo, Case, and Caterpillar wheel loaders manufactured between 2005 and 2018. Always verify the housing configuration before installation, as variations in the TRANSMISSION HOUSING casting may require additional sealing components.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101058 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4657201154 | HOUS.FRONT SECT | Front section housing for input shaft and pump drive |
| 4657201155 | HOUSING REAR PART | Rear casing section for output shaft support |
| 4657298094 | HOUSING REAR SECTION | Alternative rear housing variant for extended tail configurations |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retention plate for clutch pack assembly |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit protection |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for sump return line |
| 0636100803 | CAP SCREW | High-tensile bolt for bellhousing attachment |
