Overview
The ZF 4657.056.070 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-assembled gearbox core designed for heavy-duty off-highway machinery. This complete unit serves as the central power distribution hub, converting engine torque into controlled hydraulic and mechanical drive for wheel loaders, graders, and industrial tractors. The SKU 4657.056.070 represents a direct OEM replacement assembly, eliminating the need for partial rebuilds. Within the transmission, this unit houses the main shaft, clutch packs, and valve body, and it interfaces directly with the TRANSMISSION HOUSING to form the sealed drivetrain envelope. Precision alignment is ensured by the CYLINDRICAL PIN, which locates the assembly to the engine bellhousing.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or degraded seals inside the 6 WG 210 cause delayed shifts or complete loss of drive, especially during directional changes.
- External oil leaks at housing joints: Cracks or fatigue in the main casing allow transmission fluid to weep from the seam between the HOUS.FRONT SECT and the rear section, leading to low fluid levels.
- Unusual whining or grinding noises: Bearing wear or gear tooth damage within the complete unit produces metallic sounds that intensify with engine RPM.
- Overheating and burnt fluid smell: Internal friction from failing clutches generates excessive heat, oxidizing the oil and causing thermal damage to the HOUSING REAR PART.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.056.070 |
| Assembly Type | Complete Powershift Unit (6-speed) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-grade cast iron (GGG-40) |
| Max Input Torque | 2,100 Nm |
| OEM Reference | ZF 6 WG 210 |
| Related Fastener | CAP SCREW (M12 x 1.5) |
| Related Fastener | CAP SCREW (M16 x 2.0) |
| Sealing Component | FIXING PLATE |
| Filter Element | SCREEN SHEET (fine) |
| Filter Element | SCREEN SHEET (coarse) |
| Lubrication Component | OIL FEED.HOUSG. |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 series of powershift transmissions. It is directly compatible with models including the WG180, WG200, and WG210 variants used in articulated dump trucks, wheel loaders, and telehandlers. The assembly also fits select ZF 6-speed powershift applications found in agricultural tractors and forestry skidders. Always verify the housing casting numbers against your existing TRANSMISSION HOUSING to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section housing input shaft and pump drive |
| 4657201013 | HOUSING REAR PART | Rear section enclosing output shaft and PTO |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing-to-engine interface |
| 0636100801 | CAP SCREW | M12 fastener for front housing attachment |
| 0636100803 | CAP SCREW | M16 fastener for rear housing attachment |
| 4656301148 | FIXING PLATE | Locks bearing preload and axial position |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh filter for sump return |
| 4681301040 | OIL FEED.HOUSG. | Distributes pressurized oil to clutch packs |
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