Overview
This ZF 4657.063.020 3 WG 211 Powershift Transmission Assembly is a complete, factory-grade unit designed for heavy-duty industrial applications. As the core hydraulic-mechanical assembly in the WG 211 series, it integrates the torque converter, planetary gear sets, and clutch packs into a single sealed housing. The SKU 4657.063.020 replaces worn or failed original units, restoring full power flow and shift quality in ZF powershift transmissions used in construction, mining, and agricultural machinery.
Symptoms of Failure
- Delayed or harsh shifting under load — When the internal clutch packs or valve body wear, operators experience hesitation or jarring engagement, especially when shifting between forward and reverse.
- Low hydraulic pressure and overheating — Internal seal degradation causes pressure drops, leading to transmission overheating and erratic operation during prolonged use.
- Oil leaks from the housing joints — Cracks or warping in the TRANSMISSION HOUSING or the HOUS.FRONT SECT allow fluid to escape, reducing lubrication and causing gear slipping.
- Unusual noise from the gear train — Worn bearings or a damaged CYLINDRICAL PIN can produce grinding or whining sounds, indicating imminent internal failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4657.063.020 |
| Transmission Series | WG 211 (3-speed powershift) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| OEM Reference | ZF 4657.063.020 |
| Torque Capacity | Up to 1,200 Nm |
| Max Input Speed | 2,800 RPM |
Compatibility
This complete unit is engineered for the ZF WG 211 series powershift transmissions. It is directly compatible with WG180, WG200, and WG211 models found in loaders, graders, and forklifts. The assembly also integrates with the HOUSING REAR PART to complete the main casing. Always verify your transmission model and serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assembly |
| 4657301130 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657301131 | HOUSING REAR PART | Rear section of the transmission housing |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636102489 | CAP SCREW | Fastener for housing sections |
| 4656301148 | FIXING PLATE | Secures internal components to the housing |
| 0636102463 | CAP SCREW | Mounting bolt for the fixing plate |
| 4657201133 | SCREEN SHEET | Filter screen for hydraulic fluid |
| 0636115287 | CAP SCREW | Fastener for the screen sheet assembly |
| 4657301065 | PLATE | Cover plate for the rear housing section |
Frequently Asked Questions
Q: Is the ZF 4657.063.020 a direct replacement for a WG211 transmission?
A: Yes, this is a complete powershift transmission assembly designed as a direct OEM replacement for the ZF WG211 series. It includes all internal components and requires no additional modifications for installation.
Q: What tools are needed to install this unit?
A: Standard heavy-duty transmission tools are required, including a torque wrench, alignment fixtures, and a transmission jack. You will also need new gaskets and the CYLINDRICAL PIN for proper housing alignment.
Q: Can I use this assembly with a different ZF housing?
A: This unit is specifically matched to the WG211 housing. For compatibility with other series, you must also replace the TRANSMISSION HOUSING and the HOUS.FRONT SECT to ensure correct fitment.
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Phone: +86 158 2286 3467 |
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