Overview
This ZF 4657.023.002 3 WG 190 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty industrial applications. As the core rotating assembly within the WG 190 series, it integrates the planetary gear sets, clutches, and hydraulic control components required for smooth, reliable power shifting under load. The SKU 4657.023.002 replaces the entire internal gear train, making it a critical drop-in solution for restoring full torque capacity and shift precision in ZF powershift transmissions. It sits directly between the HOUS.FRONT SECT and the HOUSING REAR PART, requiring precise alignment during installation.
Symptoms of Failure
- Delayed or harsh engagement: When the internal clutches or seals wear, operators notice a lag between shifting and actual gear engagement, often accompanied by a jarring thud.
- Intermittent gear slipping under load: The transmission loses torque transfer during uphill climbs or heavy hauling, causing the engine to rev without proportional vehicle movement.
- Contaminated or low transmission fluid: Internal wear particles from the assembly can clog the SCREEN SHEET, leading to erratic hydraulic pressure and eventual overheating.
- Unusual whining or grinding noises: Worn bearings or damaged gear teeth produce metallic sounds that intensify with speed, indicating imminent internal failure.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.023.002 |
| Series | WG 190 (3-speed) |
| Wet Weight (approx.) | 185 kg (408 lbs) |
| Housing Material | High-grade cast iron / alloy steel |
| Input Torque Capacity | Up to 1,900 Nm (1,400 lb-ft) |
| Overall Length | 620 mm |
| OEM Reference | ZF 3 WG 190 |
| Fastener Torque Spec | Use CAP SCREW (M16) at 210 Nm |
Compatibility
This complete unit is engineered for the ZF WG 190 series powershift transmissions. It is directly compatible with models including the WG 180, WG 190, and WG 200 when used with the correct TRANSMISSION HOUSING. It also fits select variants of the WG 150 and WG 210 series with adapter modifications. Always verify the CYLINDRICAL PIN alignment during installation to ensure proper dowel engagement.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101031 | TRANSMISSION HOUSING | Outer casing that encloses the gear assembly |
| 4657201027 | HOUS.FRONT SECT | Front section housing the input shaft and pump drive |
| 4657201020 | HOUSING REAR PART | Rear section supporting output shaft and PTO mounting |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | M16 bolt for securing housing flanges |
| 4656301148 | FIXING PLATE | Locks clutch piston retainers in position |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit (upper) |
| 4657301033 | SCREEN SHEET | Fine mesh filter for hydraulic circuit (lower) |
| 0636100803 | CAP SCREW | M12 bolt for valve body attachment |
| 4681301040 | OIL FEED.HOUSG. | Distributes pressurized oil to clutch packs |
Frequently Asked Questions
Q: Can this assembly be installed without removing the transmission from the vehicle?
A: No. The ZF 4657.023.002 requires full transmission removal and disassembly of the TRANSMISSION HOUSING to access the internal gear train. We recommend replacing all seals and screens simultaneously.
Q: Does this part include the clutch packs and pistons?
A: Yes. The complete unit includes all rotating clutches, steel plates, and hydraulic pistons. You will need to transfer the FIXING PLATE and OIL FEED.HOUSG. from your original assembly.
Q: What is the typical lead time for this SKU?
A: As a high-demand OEM assembly, the 4657.023.002 is typically stocked. Verify availability before ordering, as core exchange programs may apply.
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Phone: +86 158 2286 3467 |
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