Overview
The ZF 4657.024.133 4 WG 190 Powershift Transmission Assembly is a complete, factory-grade unit engineered for heavy-duty off-highway machinery. This assembly serves as the central power distribution hub within the WG 190 series, managing torque flow across four forward and reverse speeds. The SKU 4657.024.133 integrates the main gear cluster, clutch packs, and hydraulic valve body into a single ready-to-install package. It directly interfaces with the TRANSMISSION HOUSING to form the structural backbone of the drivetrain, while the HOUS.FRONT SECT and HOUSING REAR PART enclose the rotating components to ensure precise alignment and oil containment.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn clutch discs or hydraulic seal degradation inside the 4657.024.133 cause hesitation when shifting from neutral to forward or reverse, often accompanied by a loud clunk.
- Torque converter overheating: Internal leakage past the stator support or pump drive leads to elevated transmission fluid temperatures, triggering warning lights on the operator display.
- Intermittent loss of drive in higher ranges: As the planetary gearset bearings fatigue, the assembly may slip under load in 3rd or 4th gear, particularly during uphill travel or heavy towing.
- External oil seepage at housing joints: Cracks or warpage in the HOUSING REAR SECTION allow ATF to escape, leaving visible drips under the vehicle after shutdown.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4657.024.133 |
| Assembly Type | Complete Powershift Transmission (4 WG 190) |
| 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 4657.024.133 / 4 WG 190 |
| Torque Capacity | 1,900 Nm (1,401 lb-ft) |
| Fluid Capacity | 22 liters (5.8 gal) of ZF TE-ML 03 |
Compatibility
This complete unit is specifically designed for the ZF WG 190 series powershift transmissions. It is directly interchangeable with models in the WG180, WG190, and WG200 families that share the same 4-speed planetary layout and bell-housing pattern. The assembly is commonly found in Case IH Steiger, New Holland TJ, and John Deere 9000 series tractors, as well as Volvo L220 and Caterpillar 980 wheel loaders. Always verify the serial number range and housing casting codes before installation. The HOUSING REAR PART and HOUSING REAR SECTION must match the original equipment configuration to ensure proper oil gallery alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101065 | TRANSMISSION HOUSING | Main structural casing that supports all internal shafts and bearings |
| 4657201132 | HOUS.FRONT SECT | Front housing section that encloses the torque converter and pump drive |
| 4657201152 | HOUSING REAR PART | Rear housing segment that contains the output shaft and parking brake |
| 4657298092 | HOUSING REAR SECTION | Final rear cover that seals the transmission and supports the PTO drive |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing-to-housing positioning |
| 0636100801 | CAP SCREW | M12 x 1.5 bolt for securing housing flanges |
| 4656301148 | FIXING PLATE | Locking plate that prevents cap screw loosening under vibration |
| 4657301032 | SCREEN SHEET | Fine mesh filter for the main pressure line |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for the sump return line |
| 0636100803 | CAP SCREW | M10 x 1.5 bolt for attaching the screen sheet brackets |
Frequently Asked Questions
Q: Can the 4657.024.133 assembly be rebuilt, or is it only sold as a complete unit?
A: This SKU is supplied as a fully assembled and tested complete unit. While individual internal components like clutch packs and seals are available separately, the 4657.024.133 is factory-balanced and pressure-tested to ensure immediate bolt-on reliability.
Q: What is the typical service life of this powershift transmission assembly?
A: Under normal operating conditions with proper fluid maintenance (ZF TE-ML 03 changed every 1,000 hours), the 4 WG 190 assembly typically delivers 8,000 to 12,000 hours before requiring major overhaul. Harsh applications like mining or forestry may reduce this interval by 30%.
Q: Does this assembly include the torque converter and valve body?
A: Yes, the 4657.024.133 complete unit ships with the integrated torque converter, all four clutch packs, the hydraulic valve body, and the internal wiring harness. You will only need to add the external TRANSMISSION HOUSING and the front/rear housing sections listed above to complete the installation.
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Phone: +86 158 2286 3467 |
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