Overview
The ZF 4657.056.195 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This fully assembled gearbox integrates the main drive train, clutch packs, and hydraulic control components into a single, ready-to-install package. As the core power transfer module in the WG 210 series, it manages torque distribution across six forward speeds and one reverse. The SKU 4657.056.195 is a direct OEM replacement, ensuring seamless fitment when paired with the correct TRANSMISSION HOUSING and HOUS.FRONT SECT components. This assembly eliminates the need for piecemeal rebuilding, reducing downtime in construction, mining, and agricultural machinery.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or damaged hydraulic seals inside the assembly cause delayed shifts or complete loss of drive torque, particularly in higher gears.
- Internal oil leaks and low pressure warnings: Cracks in the main casing or degraded gaskets lead to transmission fluid escaping, often visible as drips near the bell housing or PTO ports.
- Abnormal whining or grinding noises: Bearing fatigue or gear tooth spalling within the 6 WG 210 produces metallic sounds that intensify during acceleration or deceleration.
- Overheating and burnt fluid smell: Clogged oil passages or failing pump components cause excessive friction, resulting in thermal degradation of the transmission oil.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.195 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 210 |
| Number of Speeds | 6 Forward / 1 Reverse |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 4657.056.195 |
| Fastener Torque Spec | Refer to CAP SCREW (0636100801) and CAP SCREW (0636100803) data |
Compatibility
This complete unit is engineered for the ZF WG 210 series. It is directly compatible with WG 210 models and can be retrofitted into earlier WG 180 and WG 200 chassis when used with the appropriate HOUSING REAR PART or HOUSING REAR SECTION adapters. The assembly also fits select ZF 6WG-210 variants used in articulated dump trucks, wheel loaders, and graders from manufacturers like Volvo, Case, and Caterpillar. Always verify bell housing pattern and PTO configuration before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Alternate rear housing for PTO integration |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating |
| 0636100801 | CAP SCREW | M16 fastener for main housing bolts |
| 4656301148 | FIXING PLATE | Retainer for clutch pack assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M12 fastener for cover plates |
