Overview
This complete ZF 4657.024.014 4 WG 190 Powershift Transmission Assembly is a fully integrated drop-in unit designed for heavy-duty off-highway applications. As the core power transfer module in the WG 190 series, it manages torque distribution across four forward and reverse speeds. The assembly includes the main gear cluster, clutch packs, and valve body. The SKU 4657.024.014 is a direct OEM replacement, ensuring precise fitment and original performance characteristics. It interfaces directly with the TRANSMISSION HOUSING to form the sealed driveline envelope.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or piston seals inside the assembly cause delayed shifts or complete loss of drive in specific ranges.
- Internal hydraulic pressure loss: Cracks in the housing or damaged sealing surfaces lead to low line pressure, resulting in harsh shifts or transmission overheating.
- Metallic debris in the oil pan: Bearing or gear tooth fragmentation from fatigue generates visible particles, often accompanied by whining or grinding noises during operation.
- External oil seepage at the bell housing: Degraded gaskets between the main case and the HOUS.FRONT SECT allow fluid to escape, reducing lubrication and accelerating component wear.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.024.014 |
| Assembly Weight | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 410 mm |
| Overall Height | 480 mm |
| Housing Material | High-grade cast iron (GGG-40) |
| Max Input Torque | 1,900 Nm |
| Oil Capacity | 14.5 liters |
| OEM Reference | ZF 4 WG 190 |
Compatibility
This complete unit is engineered for the ZF WG 190 series powershift transmissions. It is directly compatible with WG 180, WG 190, and WG 200 models used in wheel loaders, graders, and industrial tractors. The assembly mates with the HOUSING REAR PART and is secured using the CYLINDRICAL PIN for precise alignment. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural case enclosing the gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing the torque converter |
| 4657201012 | HOUSING REAR PART | Rear section supporting output shaft bearings |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for securing housing flanges |
| 4656301148 | FIXING PLATE | Locking plate for clutch piston retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for oil pump intake |
| 0636100803 | CAP SCREW | High-strength bolt for valve body mounting |
| 4681301040 | OIL FEED.HOUSG. | Lubrication supply tube to planetary gears |
Frequently Asked Questions
Q: Can the ZF 4657.024.014 be rebuilt, or is it only sold as a complete unit?
A: This SKU is supplied as a complete, pre-assembled unit. However, individual internal components such as clutch plates and seals are available separately for rebuilds.
Q: What is the typical service interval for this transmission assembly?
A: Under normal operating conditions, ZF recommends an oil and filter change every 1,000 hours. The complete unit should be inspected for seal integrity at 5,000-hour intervals.
Q: Does this assembly include the torque converter?
A: No, the 4657.024.014 is the main gearbox section only. The torque converter is housed in the separate HOUS.FRONT SECT and must be ordered separately if needed.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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