Overview
The ZF 4657.056.169 6 WG 210 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway machinery. This assembly integrates the main gear cluster, clutch packs, and hydraulic control components into a single, ready-to-install package. As a core replacement for the WG 210 Series, the SKU 4657.056.169 eliminates the need for piecemeal rebuilding, ensuring precise gear engagement and torque distribution across all six forward speeds. The assembly sits at the heart of the drivetrain, directly coupling to the TRANSMISSION HOUSING to form the primary structural shell. When installed, it works in concert with the HOUS.FRONT SECT and the HOUSING REAR PART to maintain alignment under extreme loads.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or fatigued seals within the assembly cause the transmission to hesitate or lose torque when shifting, particularly in lower gears.
- Internal hydraulic pressure loss: Cracks in the valve body or piston bores lead to a drop in line pressure, resulting in delayed shifts and a spongy feel at the shift lever.
- Metallic debris in the oil pan: Bearing spalling or gear tooth chipping generates ferrous particles that circulate through the system, accelerating wear on the HOUSING REAR SECTION and adjacent components.
- External oil seepage at mating flanges: Degraded gaskets between the assembly and the TRANSMISSION HOUSING produce visible drips, often mistaken for simple pan leaks.
Technical Specifications
| Parameter | Value |
|---|---|
| Overall Length | 720 mm (28.3 in) |
| Dry Weight | 185 kg (408 lb) |
| Housing Material | High-strength cast iron (GGG-40) |
| Max Input Torque | 2,100 Nm (1,549 lb-ft) |
| OEM Reference | ZF 4657.056.169 |
| Bolt Torque (M12) | 120 Nm ± 10 Nm |
Compatibility
This complete unit is engineered for the ZF WG 210 Series, but its mounting pattern and hydraulic interface also suit the WG 180 and WG 200 models when used with the correct FIXING PLATE. It is directly compatible with WG 210 variants in telehandlers, wheel loaders, and dump trucks from 2015 onward. For WG 160 or WG 250 applications, verify bell housing dimensions and spline count before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201167 | HOUS.FRONT SECT | Front section supporting input shaft |
| 4657201171 | HOUSING REAR PART | Rear casing for output shaft bearings |
| 4657298103 | HOUSING REAR SECTION | Extended rear cover for PTO interface |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636100801 | CAP SCREW | M12 x 40 mm fastener for housing |
| 4656301148 | FIXING PLATE | Locating plate for valve body |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil return |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for suction |
| 0636100803 | CAP SCREW | M10 x 30 mm fastener for cover |
