Overview
The ZF 4657.056.176 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-assembled gearbox core designed for heavy-duty off-highway machinery. This SKU 4657.056.176 serves as the central power distribution hub within the WG 210 series, converting engine torque into controlled hydraulic and mechanical output for wheel loaders, graders, and industrial tractors. The assembly incorporates the main gear cluster, clutch packs, and valve body, all housed within a robust casing. For structural integrity, this unit mates directly with the 4657101080: TRANSMISSION HOUSING and the 4657201167: HOUS.FRONT SECT, ensuring precise alignment of internal shafts.
Symptoms of Failure
- Delayed or harsh gear engagement: When the complete unit wears, operators notice a pronounced lag or jarring shift between forward and reverse, often accompanied by a loss of hydraulic pressure.
- Chronic oil leaks at mating surfaces: Deterioration of internal seals causes fluid seepage around the joint between the assembly and the 4657201171: HOUSING REAR PART, leading to low oil levels and overheating.
- Intermittent power loss under load: Slipping clutch packs within the 6 WG 210 result in a sudden drop in tractive effort during grading or loading cycles, often misdiagnosed as engine trouble.
- Unusual whining or grinding noises: Bearing fatigue inside the assembly produces a metallic whine that intensifies with speed, signaling imminent internal failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.056.176 |
| Assembly Type | Complete Powershift Unit (6-speed) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 410 mm |
| Overall Height | 480 mm |
| Primary Material | Cast Iron Housing with Steel Gears |
| OEM Reference | ZF 6 WG 210 |
| Torque Capacity (est.) | 2100 Nm |
Compatibility
This complete unit is engineered for the ZF WG 210 series. It is also compatible with earlier WG 180 and WG 200 models when used with the correct adapter kit. The assembly directly replaces units in WG 210-1 and WG 210-2 variants. For rear-end 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 housing input shaft |
| 4657201171 | HOUSING REAR PART | Rear casing for output flange |
| 4657298103 | HOUSING REAR SECTION | Extended rear section for PTO mount |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636100801 | CAP SCREW | Fastener for housing assembly |
| 4656301148 | FIXING PLATE | Retains clutch pack in position |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | High-tensile bolt for bell housing |
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