Overview
The ZF 4657.055.110 5 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly serves as the central power distribution hub within the WG 210 series, managing torque flow from the engine to the driveline through five forward speeds and one reverse. As a complete unit, it integrates the main housing, clutch packs, planetary gearsets, and hydraulic control valves. The SKU 4657.055.110 identifies this specific build configuration, which includes the HOUS.FRONT SECT as a critical structural component. Proper installation requires precise alignment using a CYLINDRICAL PIN to ensure concentricity between the front housing and the main gear case.
Symptoms of Failure
When the ZF 4657.055.110 assembly begins to degrade, operators typically notice these specific failure modes:
- Delayed engagement or gear slipping – Worn clutch pack seals or scored drum surfaces cause hydraulic pressure loss, resulting in hesitation when shifting from neutral to forward or reverse.
- External oil leaks at the front housing joint – Fatigue cracks in the HOUS.FRONT SECT or degraded gaskets allow transmission fluid to weep, often pooling near the bellhousing area.
- Abnormal whining or grinding noises – Worn planetary bearings or damaged gear teeth produce metallic sounds that intensify under load, indicating imminent internal failure.
- Erratic shift quality or harsh engagement – Contaminated hydraulic fluid or a failing torque converter lockup clutch causes unpredictable shift patterns and jarring gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.055.110 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 210 |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | Cast Iron (GGG-40) |
| OEM Reference | ZF 4657.055.110 |
| Fastener Torque (M12) | 90 Nm |
| Fluid Capacity | 12.5 L (SAE 10W-30) |
Compatibility
This complete unit is engineered for the ZF WG 210 series, but it shares mounting patterns and hydraulic interfaces with several other ZF powershift models. It is directly compatible with the WG 180, WG 200, and WG 211 transmissions used in wheel loaders, telehandlers, and industrial tractors. The assembly also fits select WG 120 variants when used with the appropriate CAP SCREW kit for bellhousing adaptation. For proper retention of the output flange, a FIXING PLATE must be installed to prevent axial movement during high-torque operations.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201132 | HOUS.FRONT SECT | Front housing section for bellhousing mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | M12 fastener for housing attachment |
| 4656301148 | FIXING PLATE | Output flange retention plate |
| 4657301032 | SCREEN SHEET | Oil filter screen (fine mesh) |
| 4657301033 | SCREEN SHEET | Oil filter screen (coarse mesh) |
| 0636100803 | CAP SCREW | M10 fastener for cover plate |
| 0750301003 | OIL FEED.HOUSG. | Hydraulic oil feed housing |
| 4656301023 | GASKET | Housing joint gasket |
| 0736300182 | TORX SCREW | Torx-head screw for valve body |
