Overview
This complete ZF 4657.024.044 4 WG 190 Powershift Transmission Assembly is a fully integrated drop-in unit designed for heavy-duty industrial applications. As a core component of the WG 190 Series, this assembly houses the complete gear train, clutch packs, and hydraulic control system required for seamless power delivery. The SKU 4657.024.044 represents a factory-spec replacement that eliminates the need for partial rebuilds, providing a direct exchange for worn or failed transmissions in wheel loaders, forklifts, and material handlers. This unit sits as the primary driveline component between the engine and the final drive, managing torque multiplication and directional shifts under extreme load conditions.
Symptoms of Failure
When the ZF 4657.024.044 assembly begins to degrade, operators will notice distinct operational issues. Delayed or harsh engagement during direction changes (forward-to-reverse) is a primary indicator, often accompanied by a loud clunking noise. Internal hydraulic pressure loss leads to clutch pack slippage under load, causing the machine to lose pulling power on inclines or when carrying heavy payloads. External oil seepage from the main housing gasket or output shaft seal is common, leaving visible puddles of ATF or hydraulic fluid beneath the equipment. Finally, erratic shift patterns or a complete failure to engage a specific gear range (e.g., 2nd or 3rd gear) signals advanced wear within the valve body or planetary gear sets.
Technical Specifications
| Part Number / SKU | 4657.024.044 |
| Assembly Type | Complete Powershift Transmission Unit |
| Series | WG 190 |
| Dry Weight (Estimated) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 480 mm |
| Housing Material | High-Strength Cast Iron (GGG-40) |
| Input Torque Capacity | 1,900 Nm (1,401 lb-ft) |
| OEM Reference | ZF 4657.024.044 |
| Fluid Capacity | 18.5 Liters (4.9 Gallons) |
Compatibility
This complete assembly is engineered for the ZF WG 190 Series but shares core architecture with several adjacent models. It is a direct fit for the WG 180 and WG 200 series transmissions when used in equivalent power ratings. Additionally, the unit is compatible with ZF 4 WG 180 and ZF 4 WG 200 variants that utilize the same bellhousing bolt pattern and input shaft spline count. For applications requiring a 4-speed powershift configuration in WG 170 or WG 210 housings, verify the adapter plate and torque converter match before installation. This assembly is commonly found in Linde, Volvo, and JCB heavy equipment models originally spec’d with ZF drivetrains.
Frequently Asked Questions
Q: Is this a remanufactured unit or a new OEM assembly?
A: This SKU 4657.024.044 is supplied as a complete new OEM-spec assembly. It includes all internal clutches, seals, bearings, and the valve body pre-calibrated from the factory. No core return is required for this part.
Q: Can I install this unit without specialized tools?
A: Due to the 385 kg weight and precise alignment requirements, we strongly recommend using a transmission jack and a ZF-specific bellhousing alignment tool. Improper installation can damage the input shaft or torque converter pilot.
Q: What is the typical lead time for this transmission assembly?
A: As a complete unit, the 4657.024.044 is typically in stock for immediate shipment. Lead times may extend to 5-7 business days if a specific build configuration is required for non-standard applications.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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