Overview
The ZF 4657.056.172 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, factory-grade drop-in replacement for heavy-duty off-highway applications. This complete unit integrates the main gear train, clutch packs, and hydraulic control system into a single, pre-tested assembly. As the core power transfer module in the WG 210 series, it directly interfaces with the TRANSMISSION HOUSING to form the structural backbone of the drivetrain. The SKU 4657.056.172 designates a complete assembly, ensuring that all internal components are matched and timed from the factory, eliminating the need for piecemeal rebuilds.
Symptoms of Failure
When the ZF 4657.056.172 assembly begins to fail, operators typically notice these specific warning signs:
- Erratic gear engagement or clutch slip under load: Worn internal seals or clutch discs cause the transmission to hesitate or lose torque during acceleration, especially on inclines.
- External oil leaks at the main case joints: Cracks or fatigue in the assembly body allow hydraulic fluid to escape, often pooling around the bell housing or the interface with the HOUS.FRONT SECT.
- Metallic grinding or whining noise from the center section: Bearing failure or gear tooth damage inside the assembly produces a distinct, high-pitched noise that increases with engine RPM.
- Delayed or harsh shifting between forward and reverse: Internal valve body wear or debris contamination prevents smooth pressure modulation, leading to jarring shifts.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.056.172 |
| Assembly Type | 6-Speed Powershift, Complete Unit |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Primary Material | Cast Iron / Steel Alloy |
| OEM Reference | ZF WG 210 Series |
| Torque Capacity (est.) | 1,200 Nm (885 lb-ft) |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 series of powershift transmissions. Based on its architecture and mounting points, it is also compatible with the following ZF models when used with the correct adapters: WG 180, WG 200, and WG 211. It is designed to bolt directly to the HOUSING REAR PART and the HOUSING REAR SECTION without modification. Always verify the bell housing pattern and PTO configuration against your specific machine’s serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201167 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657201171 | HOUSING REAR PART | Rear structural component for output bearing support |
| 4657298103 | HOUSING REAR SECTION | Extended rear cover for PTO integration |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for main case joints |
| 4656301148 | FIXING PLATE | Retention plate for clutch pack assembly |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for oil sump |
| 0636100803 | CAP SCREW | High-torque fastener for rear housing |
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