Overview
The ZF 4657.065.004 5 WG 211 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway machinery. This SKU 4657.065.004 serves as the central torque-converter and gearbox assembly, integrating the planetary gear sets, clutch packs, and hydraulic control system within the WG 211 series. It is the primary power transfer module, converting engine torque into controlled wheel or driveline motion. When rebuilding or replacing this assembly, it is critical to inspect the 4657101049: TRANSMISSION HOUSING for cracks, as well as the 4657301130: HOUS.FRONT SECT and 4657301131: HOUSING REAR PART for wear on bearing bores. Proper alignment of these housings is ensured by the 0631306816: CYLINDRICAL PIN, which locates the sections precisely.
Symptoms of Failure
- Delayed or harsh gear engagement: When the 5 WG 211 assembly wears, internal clutch pack clearances increase, causing a noticeable lag or “clunk” when shifting from neutral to forward or reverse.
- Torque converter shudder under load: A vibrating or chattering sensation during acceleration indicates worn stator or turbine components within this specific assembly.
- External oil leaks at housing joints: Seepage between the front and rear sections often points to a failing gasket or a misaligned 0631306816: CYLINDRICAL PIN, which can cause uneven clamping pressure.
- Loss of power in higher gears: Slipping in 4th or 5th gear suggests worn sealing rings or piston seals inside the complete unit, reducing hydraulic pressure to the clutches.
Technical Specifications
| Parameter | Specification |
|---|---|
| Assembly Weight | Approx. 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| OEM Reference | ZF 4657.065.004 |
| Torque Capacity | Up to 1,200 Nm (885 lb-ft) |
| Fluid Capacity | Approx. 18 liters (4.75 gallons) |
Compatibility
This complete unit is engineered for the ZF WG 211 series, which includes the WG180, WG200, and WG211 variants used in telehandlers, wheel loaders, and industrial tractors. It is directly interchangeable with earlier WG 211 assemblies requiring the 5-speed powershift configuration. Always verify the bellhousing pattern and output flange match your application; the 4657101049: TRANSMISSION HOUSING must be compatible with your engine flywheel housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657301130 | HOUS.FRONT SECT | Front section housing torque converter |
| 4657301131 | HOUSING REAR PART | Rear section covering output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636102489 | CAP SCREW | Fastener for housing bolts |
| 4656301148 | FIXING PLATE | Retains clutch pack assembly |
| 0636102463 | CAP SCREW | Fastener for valve body |
| 4657201133 | SCREEN SHEET | Filter screen in oil sump |
| 0636115287 | CAP SCREW | Fastener for rear cover |
| 4657301065 | PLATE | Spacer plate for clutch pack |
