Overview
The ZF 4657.056.162 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-built gearbox core designed for heavy-duty off-highway machinery. This complete assembly serves as the central power distribution hub, housing all planetary gear sets, clutch packs, and hydraulic control valves within a single sealed unit. The SKU 4657.056.162 is a direct replacement for the original WG 210 series transmission, ensuring that your loader, dozer, or forklift returns to full operational torque capacity. This unit sits between the engine flywheel and the final drive, converting high-speed engine input into controlled, multi-speed output. When installing this assembly, it is critical to verify the integrity of the 4657101082: TRANSMISSION HOUSING to ensure proper alignment of all internal components.
Symptoms of Failure
When the ZF 4657.056.162 assembly begins to fail, operators typically notice these specific warning signs:
- Delayed engagement or gear slipping under load: The transmission hesitates before moving forward or reverse, or the machine loses power when climbing grades.
- External oil leaks at the housing seams: Hydraulic fluid pools around the bell housing or rear section, often traced back to a compromised 4657201166: HOUS.FRONT SECT or a worn gasket.
- Unusual grinding or whining noises: Metallic sounds from the center of the unit indicate worn bearings or damaged planetary gears inside the main assembly.
- Erratic shifting or transmission overheating: The transmission jumps gears or runs hot due to internal clutch pack slippage or blocked oil passages.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.056.162 |
| Assembly Type | Complete Powershift Unit |
| Series | WG 210 |
| Number of Speeds | 6 Forward / 3 Reverse |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-Grade Cast Iron |
| OEM Reference | ZF 4657.056.162 |
| Related Fastener | 0636100801: CAP SCREW |
| Related Pin | 0631306816: CYLINDRICAL PIN |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 transmission series. It is also compatible with the WG 180 and WG 200 series when used as a direct replacement for the main gearbox assembly, provided the 4657201170: HOUSING REAR PART and 4657298102: HOUSING REAR SECTION are matched to the same generation. This assembly fits popular applications including Volvo L120 loaders, Terex rough-terrain cranes, and various agricultural tractors requiring a 6-speed powershift. Always verify the bell housing pattern and input shaft spline count before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for the gearbox |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for housing flanges |
| 4656301148 | FIXING PLATE | Retainer plate for clutch packs |
| 4657301032 | SCREEN SHEET | Oil filter screen (fine mesh) |
| 4657301033 | SCREEN SHEET | Oil filter screen (coarse mesh) |
| 0636100803 | CAP SCREW | Fastener for rear housing section |
