Overview
The ZF 4657.056.065 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit engineered for heavy-duty off-highway applications. This fully assembled gearbox integrates the clutch packs, planetary gear sets, and hydraulic control system into a single, ready-to-install package. As the core of the WG 210 series, it manages torque distribution across six forward speeds and one reverse, ensuring smooth power delivery under extreme loads. The SKU 4657.056.065 is the direct replacement for original equipment, eliminating the need for piecemeal rebuilds. When installing this assembly, ensure the TRANSMISSION HOUSING is free of cracks and the CYLINDRICAL PIN alignment is verified to prevent misalignment during final assembly.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or degraded seals inside the assembly cause the transmission to hesitate or lose torque during uphill operation or when carrying rated payloads.
- Internal hydraulic pressure loss: A failing unit often exhibits delayed shifting or complete loss of forward motion, accompanied by low pressure readings at the test port, indicating internal leakage past piston rings.
- Contaminated oil with metallic debris: Excessive wear on planetary gears or bearing surfaces produces fine steel particles in the fluid, visible as a gray sludge on the dipstick or during oil changes.
- Audible whining or grinding from the bell housing: Damaged thrust washers or a failing torque converter lockup clutch generate high-pitched noises that intensify with engine RPM, signaling imminent internal failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.056.065 |
| Assembly Type | Complete Powershift Transmission |
| 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 (GGG-40) |
| OEM Reference | ZF 6 WG 210 |
| Max Input Torque | 2,100 Nm |
| Number of Speeds | 6 Forward / 1 Reverse |
| Hydraulic Fluid Capacity | 28 liters (ZF TE-ML 03C/07F) |
Compatibility
This complete unit is specifically designed for the ZF WG 210 series. It is directly compatible with the following transmission models: WG 180, WG 200, and WG 210. It also fits select variants of the WG 160 series when used with the appropriate HOUS.FRONT SECT adapter. For applications requiring a different bell housing pattern, the HOUSING REAR PART must be swapped to match the engine flywheel housing. Always cross-reference your vehicle’s OEM tag to confirm the 4657.056.065 is the correct assembly for your loader, dozer, or forklift.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101034 | TRANSMISSION HOUSING | Main structural casing that encloses all rotating assemblies |
| 4657201027 | HOUS.FRONT SECT | Front section housing the torque converter and input shaft |
| 4657201012 | HOUSING REAR PART | Rear casing supporting the output flange and PTO drive |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for precise housing-to-housing positioning |
| 0636100801 | CAP SCREW | M12 fastener for securing the housing sections |
| 4656301148 | FIXING PLATE | Locking plate to prevent fastener loosening under vibration |
| 4657301032 | SCREEN SHEET | Fine mesh filter for the main hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for the charge pump suction line |
| 0636100803 | CAP SCREW | M10 fastener for mounting the valve body cover |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil distribution manifold for clutch lubrication |
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