Overview
The ZF 4657.056.117 6 WG 210 Powershift Transmission Assembly is a complete, factory-grade unit engineered for heavy-duty off-highway machinery. As the core hydraulic-mechanical assembly in the WG 210 Series, this unit integrates the torque converter, planetary gear sets, and clutch packs into a single sealed system. The SKU 4657.056.117 is the direct replacement for original equipment transmissions in loaders, dozers, and graders, ensuring precise power distribution under extreme torque loads. This assembly mounts directly to the engine bellhousing and mates with the TRANSMISSION HOUSING to form the primary structural shell of the drivetrain.
Symptoms of Failure
- Delayed engagement or gear slipping under load: Worn clutch packs or valve body degradation cause the transmission to hesitate before engaging forward or reverse, particularly when the machine is under heavy load.
- External oil leaks at the housing seams: Cracks or gasket failures in the HOUS.FRONT SECT or HOUSING REAR PART allow transmission fluid to escape, leading to low pressure and eventual gear slippage.
- Erratic shifting or harsh engagement: Internal debris or worn seals in the control system cause sudden, jarring shifts, often accompanied by a loud clunk from the driveline.
- Overheating and burnt fluid odor: A failing torque converter or blocked oil passages generate excessive heat, producing a distinct burnt smell and dark, gritty transmission fluid.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.056.117 |
| Assembly Type | 6-Speed Powershift Transmission (Complete Unit) |
| Series | WG 210 |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 820 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Primary Material | High-strength cast iron housing with hardened steel gears |
| OEM Reference | ZF 4657.056.117 (Direct OE Replacement) |
| Fluid Capacity | 28 liters (approx.) |
| Max Input Torque | 2,100 Nm |
Compatibility
This complete unit is specifically designed for the ZF WG 210 Series powershift transmissions. It is directly compatible with models including the WG 180, WG 200, and WG 210, which are commonly found in articulated dump trucks, wheel loaders, and crawler dozers. The assembly also integrates with the HOUSING REAR SECTION to complete the rear driveline interface. For proper installation, ensure the mating TRANSMISSION HOUSING is free of cracks and that all sealing surfaces are clean.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101079 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing torque converter |
| 4657201169 | HOUSING REAR PART | Rear casing for output shaft support |
| 4657298104 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for housing joints |
| 4656301148 | FIXING PLATE | Secures clutch pack assembly |
| 4657301032 | SCREEN SHEET | Oil filter screen (primary) |
| 4657301033 | SCREEN SHEET | Oil filter screen (secondary) |
| 0636100803 | CAP SCREW | Fastener for rear housing section |
