Overview
The ZF 4657.056.115 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, ready-to-install core component designed for heavy-duty off-highway vehicles and industrial machinery. This complete unit integrates the gear set, clutch packs, and hydraulic control system into a single, sealed assembly. As the central power transfer module in the WG 210 series, it converts engine torque into precise, multi-speed output for applications such as wheel loaders, graders, and dump trucks. The SKU 4657.056.115 ensures exact OEM fitment, eliminating guesswork during replacement. This assembly interfaces directly with the 4657101079: TRANSMISSION HOUSING, which provides the structural foundation for the entire drivetrain.
Symptoms of Failure
When the ZF 4657.056.115 assembly begins to fail, operators typically notice these specific performance issues:
- Erratic gear engagement or slipping under load – Worn clutch discs or hydraulic seal degradation cause the transmission to hesitate or lose torque during acceleration, especially in higher gears.
- Internal oil leaks pooling beneath the bell housing – Cracks in the main casing or failed gaskets allow ATF to escape, leading to low fluid levels and eventual overheating.
- Delayed or harsh shifting between forward and reverse – Contaminated valve body passages or worn spools create pressure drops, resulting in jarring shifts or a lag when changing direction.
- Unusual whining or grinding noises from the center section – Bearing wear or gear tooth pitting generates metallic sounds that intensify with engine RPM, indicating imminent internal damage.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.056.115 |
| Series | WG 210 (6-speed powershift) |
| Dry Weight (approx.) | 285 kg (628 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Max Input Torque | 1,200 Nm |
| Fluid Capacity | 18 liters (ATF Dexron III) |
| Related Housing Parts | 4657201166: HOUS.FRONT SECT, 4657201169: HOUSING REAR PART, 4657298104: HOUSING REAR SECTION |
Compatibility
This complete unit is engineered for the ZF WG 210 transmission series. It is also backward-compatible with earlier WG 180 and WG 200 models when used with the appropriate adapter plates and control valve updates. The assembly fits directly into machinery originally equipped with ZF 6WG-210, 6WG-200, and 6WG-180 powertrains, including models from Caterpillar, Volvo, and Case wheel loaders. Always verify the housing configuration; the 4657201166: HOUS.FRONT SECT and 4657201169: HOUSING REAR PART must match the chassis mounting points for a secure installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101079 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assembly |
| 4657201166 | HOUS.FRONT SECT | Front section housing the input shaft and torque converter |
| 4657201169 | HOUSING REAR PART | Rear section enclosing the output shaft and PTO drive |
| 4657298104 | HOUSING REAR SECTION | Alternate rear housing variant for extended wheelbase models |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 0636100801 | CAP SCREW | M12 bolt for securing housing sections |
| 4656301148 | FIXING PLATE | Retainer plate for clutch pack preload |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump pickup |
| 0636100803 | CAP SCREW | M10 bolt for valve body attachment |
