Overview
The ZF 4657.055.102 5 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in ready gearbox core designed for heavy-duty off-highway machinery. This complete unit integrates the clutch packs, planetary gear sets, and hydraulic control system into a single, pre-tested assembly. As the central power transfer module, it sits between the engine and the driveline, managing torque distribution across five forward speeds. The SKU 4657.055.102 identifies this as a factory-spec replacement for the WG 210 series, ensuring precise fitment and OEM-level performance. When rebuilding a transmission, this assembly must be paired with the 4657101079: TRANSMISSION HOUSING to complete the main casing structure.
Symptoms of Failure
- Delayed or harsh gear engagement: When the internal clutch packs or valve body wear, operators experience a noticeable lag or jarring shift between forward and reverse gears.
- Internal oil leaks and low pressure: Worn seals or cracked planetary carriers cause transmission fluid to bypass, leading to pressure drops and erratic shifting behavior.
- Torque converter shudder under load: A failing stator or turbine within the assembly produces vibration during acceleration, often accompanied by elevated oil temperatures.
- Complete loss of forward or reverse drive: Advanced internal failure results in the transmission refusing to engage one or more gear ranges, requiring immediate unit replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.055.102 |
| Series | WG 210 (5-speed Powershift) |
| Overall Length | ~720 mm (estimated) |
| Dry Weight | ~185 kg (estimated) |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 5 WG 210 |
| Bolt Torque Spec | Refer to service manual |
| Related Fasteners | 0636100801: CAP SCREW, 0636100803: CAP SCREW |
| Alignment Hardware | 0631306816: CYLINDRICAL PIN |
Compatibility
This complete unit is engineered for the ZF WG 210 transmission family, which includes the 5 WG 210 variant. It is also compatible with earlier WG 180 and WG 200 series models that share the same bellhousing pattern and input shaft spline count, though verification of the rear housing interface is recommended. The assembly integrates directly with the 4657201166: HOUS.FRONT SECT and the 4657201169: HOUSING REAR PART to form the complete casing. For extended rebuilds, the 4657298104: HOUSING REAR SECTION may also be required to match specific chassis configurations.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101079 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201169 | HOUSING REAR PART | Rear housing component for output shaft support |
| 4657298104 | HOUSING REAR SECTION | Alternate rear housing section for specific models |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retaining plate for internal components |
| 4657301032 | SCREEN SHEET | Filter screen for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for oil return |
| 0636100803 | CAP SCREW | Additional housing fastener |
