Overview
The ZF 4657.056.213 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated drop-in replacement for heavy-duty off-highway applications. This complete assembly serves as the central power distribution hub, converting engine torque into controlled hydraulic and mechanical output for wheel loaders, graders, and industrial vehicles. The SKU 4657.056.213 represents a factory-mated unit that includes the main gear set, clutch packs, and valve body. Within the transmission, this assembly sits between the torque converter and the final drive, directly interfacing with the TRANSMISSION HOUSING to ensure precise alignment of all rotating components.
Symptoms of Failure
- Delayed engagement or gear slipping under load: Worn clutch discs or degraded seals inside the 4657.056.213 assembly cause hesitation when shifting from neutral to forward or reverse, especially during high-torque operations.
- Hydraulic oil leaks at the housing interface: Cracks or gasket failure where the assembly meets the HOUS.FRONT SECT result in visible puddles of ATF beneath the vehicle.
- Erratic shift patterns or harsh engagement: Internal valve body wear or contamination leads to inconsistent clutch pressure, producing jarring shifts that stress the driveline.
- Overheating transmission fluid: A failing assembly generates excessive friction, causing the oil temperature to spike above 120°C (248°F) during normal operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4657.056.213 |
| Assembly Type | Complete Powershift Unit (6-speed) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Primary Material | Cast Iron / Alloy Steel |
| OEM Reference | ZF 6 WG 210 |
| Bolt Torque (housing) | 120 Nm (89 lb-ft) |
Compatibility
This complete unit is engineered for the ZF WG 210 Series powershift transmissions. It is directly compatible with the WG 180, WG 200, and WG 210 models found in heavy equipment such as Volvo L120/L150 wheel loaders and Case 921E graders. The assembly also fits select ZF 6WG-200 and 6WG-210 variants. For proper installation, the unit must be paired with the HOUSING REAR PART and the HOUSING REAR SECTION to complete the structural enclosure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft and pump drive |
| 4657201170 | HOUSING REAR PART | Rear structural component for output bearing support |
| 4657298102 | HOUSING REAR SECTION | Rear cover section for final drive interface |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing dowel positioning |
| 0636100801 | CAP SCREW | M16 fastener for housing bolting |
| 4656301148 | FIXING PLATE | Retaining plate for clutch pack assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for oil return |
| 0636100803 | CAP SCREW | M12 fastener for rear housing sections |
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