Overview
The ZF 4657.056.054 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit engineered for heavy-duty off-highway applications. This fully assembled gearbox integrates the clutch packs, planetary gearsets, and hydraulic control system into a single, ready-to-install package. As the core of the WG 210 series, it replaces the need for piecemeal component sourcing. The SKU 4657.056.054 ensures precise fitment for ZF powershift transmissions operating in loaders, dozers, and material handlers. This assembly directly interfaces with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to form the main structural envelope of the drivetrain.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or degraded seals inside the assembly cause the transmission to hesitate or lose torque when shifting into forward or reverse.
- Internal hydraulic pressure loss: Cracks in the assembly housing or failed piston rings lead to low system pressure, resulting in sluggish operation and overheating.
- Contaminated transmission fluid with metallic debris: Bearing or gear wear within the 4657.056.054 unit sheds metal particles into the oil, visible during routine drain intervals.
- Audible grinding or whining from the bell housing: Damaged planetary gear sets or a failing torque converter lock-up produce distinct mechanical noise during acceleration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.056.054 |
| Assembly Type | Complete Powershift Transmission (6 WG 210) |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 4657.056.054 |
| Torque Capacity (max) | 2,100 Nm |
| Number of Speeds | 6 forward / 3 reverse |
Compatibility
This complete unit is designed exclusively for the ZF WG 210 series powershift transmissions. It is directly compatible with the following ZF model families: WG 180, WG 200, and WG 210 (including 6 WG 210 variants). The assembly also integrates with the HOUSING REAR PART and is secured using the CYLINDRICAL PIN for precise alignment. It is commonly found in ZF drivelines for mobile construction equipment such as wheel loaders, telehandlers, and compactors from manufacturers like Liebherr, Caterpillar, and Volvo.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101042 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201013 | HOUSING REAR PART | Rear cover and output support |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | Fastener for housing assembly |
| 4656301148 | FIXING PLATE | Secures internal clutch packs |
| 4657301034 | SCREEN SHEET | Oil filter screen (fine mesh) |
| 4657301035 | SCREEN SHEET | Oil filter screen (coarse mesh) |
| 0636100803 | CAP SCREW | Fastener for valve body cover |
| 4656301048 | OIL FEED.HOUSG. | Lubrication oil distribution manifold |
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