Overview
The ZF 4657.055.147 5 WG 210 Powershift Transmission Assembly represents a complete, factory-grade replacement unit engineered for heavy-duty off-highway machinery. As a fully assembled gearbox, this component integrates the torque converter, clutch packs, and planetary gear sets into a single, ready-to-install package. Positioned as the primary driveline interface between the engine and the final drive, the SKU 4657.055.147 is designed to deliver seamless power modulation under extreme load conditions. This complete unit eliminates the need for partial rebuilds, offering a direct swap solution for operators seeking to restore original equipment performance in wheel loaders, dozers, and material handlers.
Symptoms of Failure
When the ZF 4657.055.147 assembly begins to degrade, operators typically encounter distinct operational anomalies. Recognizing these warning signs early can prevent catastrophic drivetrain damage.
- Delayed or harsh engagement: A noticeable lag when shifting from neutral to forward or reverse, often accompanied by a jarring clunk, indicates internal clutch pack wear or hydraulic pressure loss within the unit.
- Transmission fluid overheating: If the oil temperature rises rapidly during normal operation, it suggests excessive internal slippage or blocked cooling passages inside the assembly, leading to thermal degradation of seals.
- Intermittent gear slipping under load: The machine may momentarily lose power or rev freely while climbing grades or digging, pointing to worn friction discs or a failing torque converter stator within the 4657.055.147.
- External oil seepage from bell housing: Leaks originating near the pump drive or converter hub area indicate compromised shaft seals, which can lead to low fluid levels and eventual transmission starvation.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.055.147 |
| Assembly Type | Complete Powershift Unit (5 WG 210) |
| Overall Length (approx.) | 780 mm (30.7 in) |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Housing Material | High-tensile cast iron (GGG-40) |
| Input Torque Capacity | 2,100 Nm (1,549 lb-ft) |
| Number of Speeds | 5 Forward / 1 Reverse |
| Fluid Capacity (system) | 28 liters (7.4 US gal) |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 Series transmission family. While the 4657.055.147 is a direct fit for the WG 210, it shares mounting patterns and hydraulic interfaces with several related ZF models. Verified compatibility includes the following transmission variants:
- ZF WG 210 (primary application for this SKU)
- ZF WG 180 (with adapter plate modifications for certain loader models)
- ZF WG 200 (common in older generation wheel loaders)
- ZF 5 WG 210 (specific 5-speed variant, direct interchange)
Always cross-reference your machine’s serial number and bell housing bolt pattern before installation. This assembly is not backward-compatible with the 4-speed WG 120 series without significant driveline reconfiguration.
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