Overview
This ZF 4657.024.137 4 WG 190 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. As the core power transfer module in the WG 190 series, it integrates the torque converter, planetary gear sets, and clutch packs into a single, ready-to-install assembly. The SKU 4657.024.137 replaces the need for individual component sourcing, ensuring correct gear ratios and hydraulic timing. It sits directly between the engine flywheel housing and the output driveline, converting engine torque into controlled, shiftable power for loaders, graders, and industrial tractors.
Symptoms of Failure
- Erratic or delayed shifting under load: When the internal clutch packs or valve body wear, the transmission hesitates or slams into gear, especially when moving heavy materials.
- Torque converter shudder at low RPM: A vibrating or chattering sensation during inching or low-speed maneuvering indicates internal wear in the stator or turbine assembly.
- External oil leaks from housing seams: Cracked or warped TRANSMISSION HOUSING sections allow ATF to escape, leading to low pressure and eventual gear slip.
- Loss of power in forward gears: A gradual inability to maintain speed on inclines suggests worn clutches or a failing torque converter lock-up mechanism.
Technical Specifications
| Parameter | Specification |
|---|---|
| Assembly Type | Complete Powershift Transmission |
| OEM Reference | ZF 4657.024.137 |
| 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) |
| Max Input Torque | 1,900 Nm |
| Fluid Capacity | 28 liters (ZF TE-ML 03 spec) |
Compatibility
This complete unit is engineered specifically for the WG 190 Series powershift family. It is directly compatible with ZF models WG180, WG200, and WG210 when used in equivalent power ratings. The assembly also fits select WG 170 variants with adapter modifications. For proper sealing and alignment, always pair this unit with a verified HOUS.FRONT SECT and HOUSING REAR PART. In applications requiring extended output support, the HOUSING REAR SECTION provides additional structural rigidity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing torque converter |
| 4657201168 | HOUSING REAR PART | Rear section for output shaft support |
| 4657298101 | HOUSING REAR SECTION | Extended rear housing for PTO adapters |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M12 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Locking plate for clutch piston retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for valve body inlet |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for sump return |
| 0636100803 | CAP SCREW | M10 bolt for filter cover mounting |
Frequently Asked Questions
Q: Does the 4657.024.137 include the torque converter?
A: Yes, this complete unit ships with the torque converter, valve body, and all internal clutches pre-assembled. It is a drop-in replacement for the WG 190 series.
Q: Can I use this assembly with a different housing section?
A: Only if you match the exact bolt pattern. We strongly recommend using the matching HOUS.FRONT SECT and HOUSING REAR PART to avoid misalignment.
Q: What is the typical service life of this assembly?
A: In normal loader applications with proper fluid maintenance, the unit lasts 8,000–12,000 hours. Failure often begins with seal degradation in the TRANSMISSION HOUSING.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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