Overview
The ZF 4657.056.111 6 WG 210 Powershift Transmission Assembly is a complete, fully assembled unit designed for heavy-duty industrial applications. This core assembly integrates the main gear train, clutch packs, and hydraulic control system within a single robust package. As a direct replacement for the WG 210 series, the SKU 4657.056.111 serves as the central power transfer module, converting engine torque into precise, shiftable output for loaders, graders, and material handlers. When rebuilding a transmission, this complete unit is often paired with a new TRANSMISSION HOUSING to ensure structural integrity and proper alignment of all internal components.
Symptoms of Failure
- Delayed or harsh engagement: When the 4657.056.111 assembly wears, operators experience a noticeable lag between shifting and gear engagement, often accompanied by a jarring clunk. This indicates internal clutch pack wear or hydraulic pressure loss.
- Oil leaks at the bell housing or rear seal: A common failure symptom is fluid weeping from the joint between the transmission and the engine or transfer case. This typically points to a compromised seal or a cracked HOUS.FRONT SECT.
- Gear slipping under load: If the transmission slips out of gear while climbing or pushing heavy loads, the internal torque converter or planetary gear set within the assembly is failing. This is a critical safety issue requiring immediate replacement of the complete unit.
- Unusual whining or grinding noises: A high-pitched whine that changes with speed indicates bearing failure within the assembly. Grinding noises suggest metal-on-metal contact, often caused by a cracked HOUSING REAR PART allowing debris into the gear train.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 4657.056.111 |
| 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 | 480 mm |
| Primary Material | Cast Iron Housing with Hardened Steel Gears |
| OEM Reference | ZF 4657.056.111 (Direct OEM) |
| Fluid Capacity | 22 Liters (approx.) |
| Torque Capacity | 2100 Nm (peak) |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 series powershift transmissions. It is directly compatible with the following ZF models and their derivatives: WG 180, WG 200, WG 210, and WG 211. It is commonly found in heavy equipment such as the Liebherr L556, Volvo L120, and Caterpillar 950H wheel loaders. For proper installation, ensure the HOUSING REAR SECTION is inspected for cracks, as this component directly mates with the output flange of the 4657.056.111 assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201167 | HOUS.FRONT SECT | Front section housing for input shaft and pump drive |
| 4657201171 | HOUSING REAR PART | Rear section covering the output planetary set |
| 4657298103 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing sections |
| 0636100801 | CAP SCREW | Fastener for housing bolts (M12) |
| 4656301148 | FIXING PLATE | Locks bearing races in position |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic oil |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | Fastener for rear housing (M14) |
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