Overview
The ZF 4657.055.119 5 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-matched gearbox core designed for heavy-duty off-highway machinery. This SKU 4657.055.119 serves as the central power distribution hub within the WG 210 Series, converting engine torque into precise, multi-speed output for loaders, dozers, and material handlers. As a complete assembly, it eliminates the need for piecemeal rebuilding, ensuring that internal clearances and hydraulic clutch pack tolerances are factory-set. The unit integrates directly with the 4657101082: TRANSMISSION HOUSING to form the structural backbone, while the 4657201166: HOUS.FRONT SECT and 4657201170: HOUSING REAR PART enclose the planetary gear sets. This assembly is a direct replacement for worn or failed units, restoring original ZF shift quality and load-holding capability.
Symptoms of Failure
When the ZF 4657.055.119 assembly begins to degrade, operators will notice distinct performance losses. Watch for these specific failure indicators:
- Delayed or harsh engagement: A noticeable lag when shifting from forward to reverse, often accompanied by a clunk, indicates worn clutch packs or valve body wear inside the complete unit.
- Oil leaks at the housing interface: Fluid weeping between the main case and the 4657298102: HOUSING REAR SECTION signals gasket failure or case distortion, leading to low pressure and slipping.
- Gear slipping under load: The transmission unexpectedly drops out of gear when pushing heavy material, a classic sign of fatigued sprags or worn planetary bearings within the 5 WG 210 assembly.
- Overheating with no external cause: If the unit runs hot despite clean coolers, internal friction from worn thrust washers or a failing torque converter lockup is likely.
Technical Specifications
| Parameter | Value |
|---|---|
| ZF Part Number / SKU | 4657.055.119 |
| Assembly Type | Complete Powershift Unit (5-speed) |
| Series | WG 210 |
| Dry Weight (approx.) | 285 kg (628 lbs) |
| Housing Material | High-strength cast iron (GGG-40) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| OEM Reference | ZF 5 WG 210 |
| Input Torque Capacity | Up to 1,200 Nm |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 Series powershift family. Based on its physical architecture and clutch configuration, it is directly compatible with the following ZF transmission models: WG 180, WG 200, and WG 210 (all variants). It also fits select WG 160 applications where a 5-speed upgrade is permissible. Always verify bellhousing bolt patterns and output flange dimensions against your original unit before installation.
Related Components
The following parts are commonly replaced or inspected alongside the 4657.055.119 assembly to ensure a complete overhaul:
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural case for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section enclosing input shaft |
| 4657201170 | HOUSING REAR PART | Rear case section for output support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mount |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for front housing |
| 4656301148 | FIXING PLATE | Locks bearing preload in assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for sump |
| 0636100803 | CAP SCREW | Fastener for rear housing section |
