Overview
The ZF 4657.056.171 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, direct-replacement gearbox core designed for heavy-duty off-highway machinery. This complete unit integrates the main drive housing, clutch packs, and hydraulic valve body into a single, ready-to-install assembly. As the central power transfer component in the WG 210 series, it converts engine torque into controlled wheel or implement motion. The SKU 4657.056.171 identifies this as a complete assembly, eliminating the need to piece together individual internal components. When rebuilding a transmission, this unit is typically mounted between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, forming the structural backbone of the drivetrain.
Symptoms of Failure
When the ZF 4657.056.171 assembly begins to fail, operators often notice erratic gear engagement under load, where the transmission hesitates or clunks when shifting from forward to reverse. A second common symptom is internal hydraulic pressure loss, leading to slow or incomplete clutch pack application. Third, metal particles in the transmission oil filter indicate wear within the planetary gear sets or bearings. Finally, persistent oil leaks at the mating flange between the assembly and the HOUSING REAR PART signal seal degradation. Addressing these issues early prevents catastrophic failure of the complete unit.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.056.171 |
| Assembly Type | Complete Powershift Unit |
| Series | WG 210 |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Primary Material | Cast Iron Housing with Steel Gears |
| OEM Reference | ZF 6 WG 210 |
| Bolt Torque (housing) | 120 Nm |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 series of powershift transmissions. It is also compatible with the WG 180 and WG 200 series when used as a direct replacement for the main drive assembly, provided the rear housing sections match. The assembly interfaces directly with the HOUSING REAR SECTION and the front housing components. It is commonly found in Case IH, New Holland, and JCB telehandlers and wheel loaders equipped with ZF 6-speed powershift drivelines. Always verify the serial number range of your existing transmission before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201170 | HOUSING REAR PART | Rear cover and output bearing support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO drive |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating |
| 0636100801 | CAP SCREW | Fastener for housing flanges |
| 4656301148 | FIXING PLATE | Retains clutch pack assembly |
| 4657301032 | SCREEN SHEET | Oil filter screen for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Secondary oil filter screen |
| 0636100803 | CAP SCREW | Bolt for rear housing attachment |
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