Overview
The ZF 4657.056.179 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-matched assembly designed for heavy-duty off-highway applications. This complete unit serves as the central power distribution hub within the WG 210 series, managing torque flow from the engine through six forward speeds and one reverse. As a drop-in replacement, the SKU 4657.056.179 eliminates the need for piecemeal rebuilding, ensuring precise gear engagement and hydraulic pressure integrity. The assembly integrates directly with the 4657101080: TRANSMISSION HOUSING to form the main structural shell, while the 4657201167: HOUS.FRONT SECT and 4657201171: HOUSING REAR PART provide critical sealing and bearing support for the output shafts.
Symptoms of Failure
When the ZF 4657.056.179 assembly begins to fail, operators typically notice delayed engagement when shifting from neutral to forward, often accompanied by a harsh clunk. Another common symptom is intermittent loss of drive under load, particularly when climbing grades or carrying heavy payloads. You may also observe dark, metallic-contaminated transmission fluid on the dipstick, indicating internal clutch pack wear. Finally, audible whining or grinding noises from the bell housing area during deceleration suggest bearing fatigue within the main shaft cluster.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.179 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Overall Length | ~785 mm |
| Dry Weight | ~245 kg (540 lbs) |
| Housing Material | High-strength cast iron (GGG-40) |
| Input Spline Count | 14-tooth, 2.5 module |
| Max Input Torque | 1,200 Nm |
| OEM Reference | ZF 4657.056.179 |
| Fluid Capacity | ~18 liters (with cooler lines) |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 series powershift transmissions. It is directly compatible with the following ZF models: WG 180, WG 200, and WG 210 (all variants). The assembly also fits select ZF 6 WG 210 applications found in articulated dump trucks, wheel loaders, and telehandlers from manufacturers such as Volvo, Case, and JCB. For proper sealing, ensure the 4657298103: HOUSING REAR SECTION is inspected for cracks during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201167 | HOUS.FRONT SECT | Front section supporting input shaft bearings |
| 4657201171 | HOUSING REAR PART | Rear housing for output flange and PTO |
| 4657298103 | HOUSING REAR SECTION | Extended rear cover for oil sump sealing |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M12 fastener for housing-to-bell housing joint |
| 4656301148 | FIXING PLATE | Locking plate for clutch piston retention |
| 4657301034 | SCREEN SHEET | Fine mesh filter for lube oil circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for pump suction |
| 0636100803 | CAP SCREW | M10 bolt for rear housing cover attachment |
