Overview
The ZF 4657.056.040 6 WG 210 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway applications. As the core power transfer module in the WG 210 series, this assembly integrates the main gear cluster, clutch packs, and hydraulic control circuits into a single, ready-to-install package. The SKU 4657.056.040 specifically denotes a fully assembled unit, ensuring precise alignment of internal components such as the TRANSMISSION HOUSING and the HOUS.FRONT SECT. 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: When the internal clutch packs or hydraulic seals degrade, the transmission may hesitate or fail to hold a gear, particularly during uphill travel or heavy pulling.
- External oil leaks from housing joints: Cracks or warping in the HOUSING REAR PART can cause fluid seepage, leading to low oil pressure and eventual transmission overheating.
- Metallic grinding or whining noises: Worn bearings or damaged planetary gears produce distinct sounds, often accompanied by vibration through the driveline.
- Delayed or harsh shifting: A failing valve body or blocked oil passages may cause abrupt clutch engagement, resulting in jarring shifts and reduced operator comfort.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.040 |
| Assembly Type | Complete Powershift Unit |
| Weight (estimated) | 185 kg (408 lbs) |
| Dimensions (L x W x H) | 720 x 480 x 410 mm |
| Housing Material | Cast Iron (GGG-40) |
| OEM Reference | ZF 6 WG 210 |
| Max Input Torque | 2100 Nm |
| Number of Speeds | 6 Forward / 3 Reverse |
| Mounting Hardware | CAP SCREW (M16 x 1.5) |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 series, but it shares core architecture with the WG 180 and WG 200 families. It directly replaces units in ZF 6 WG 210 transmissions used in loaders, graders, and telescopic handlers from 2010 onward. The assembly integrates with the CYLINDRICAL PIN for precise alignment and requires the FIXING PLATE for secure mounting. For oil filtration, use SCREEN SHEET (inner) and SCREEN SHEET (outer). Additional fasteners include CAP SCREW (M12) and the OIL FEED.HOUSG. for hydraulic supply.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing input shaft and pump drive |
| 4657201012 | HOUSING REAR PART | Rear section supporting output flange and PTO |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M16 bolt for main housing fastening |
| 4656301148 | FIXING PLATE | Locks clutch pack retaining nuts |
| 4657301032 | SCREEN SHEET | Inner oil filter screen (fine mesh) |
| 4657301033 | SCREEN SHEET | Outer oil filter screen (coarse mesh) |
| 0636100803 | CAP SCREW | M12 bolt for accessory mounting |
| 4681301040 | OIL FEED.HOUSG. | Hydraulic oil supply manifold |
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