Overview
This ZF 4657.024.173 4 WG 190 Powershift Transmission Assembly is a complete, ready-to-install unit designed for heavy-duty industrial and agricultural machinery. As the core of the WG 190 series, this assembly integrates the torque converter, planetary gear sets, and hydraulic control system to deliver smooth, reliable power shifting under high load conditions. The SKU 4657.024.173 represents a fully assembled replacement that eliminates the need for piecemeal repairs, ensuring minimal downtime for your equipment. It sits at the heart of the drivetrain, directly coupling engine output to the final drive, and is engineered to withstand the rigorous demands of construction, mining, and forestry applications.
Symptoms of Failure
When the ZF 4657.024.173 assembly begins to fail, operators typically notice one or more of the following issues:
- Delayed or harsh gear engagement: A worn assembly can cause hesitation when shifting between forward and reverse, often accompanied by a jarring clunk. This is a common long-tail search query for “ZF powershift transmission slipping.”
- Internal oil leaks: Degraded seals or cracked housing sections may lead to visible fluid puddles under the transmission. Search queries like “ZF transmission oil leak repair” often point to this symptom.
- Loss of power under load: If the transmission struggles to maintain speed on inclines or during heavy pulling, internal clutch pack wear or hydraulic pressure loss is likely. This is frequently searched as “powershift transmission losing power.”
- Unusual whining or grinding noises: Worn bearings or damaged planetary gears produce distinct metallic sounds, especially during deceleration. This symptom aligns with queries for “ZF transmission noise diagnosis.”
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.024.173 |
| Assembly Type | Complete Powershift Transmission Unit |
| Series | WG 190 |
| Estimated Weight | 385 kg (849 lbs) |
| Dimensions (L x W x H) | 720 mm x 480 mm x 510 mm |
| Primary Material | Cast Iron Housing with Steel Gears |
| OEM Reference | ZF 4 WG 190 |
| Related Fastener | 0636100801: CAP SCREW |
| Related Pin | 0631306816: CYLINDRICAL PIN |
Compatibility
This complete assembly is specifically engineered for the ZF WG 190 series. Based on its part number and design, it is compatible with the following ZF transmission models: WG 180, WG 190, and WG 200. It is also suitable for select variants of the 4 WG 180 and 4 WG 200 series used in telehandlers, wheel loaders, and dump trucks. Always verify your transmission’s serial number against the 4657.024.173 specification before installation. For optimal performance, this assembly should be paired with a matching 4657101078: TRANSMISSION HOUSING to ensure proper alignment of internal components.
During installation, the front section of the transmission must be secured using the 4657201166: HOUS.FRONT SECT, while the rear portion is supported by the 4657201168: HOUSING REAR PART. For extended durability, consider also replacing the 4657298101: HOUSING REAR SECTION to prevent future fatigue cracks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear alignment |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657201168 | HOUSING REAR PART | Rear housing component for output bearing retention |
| 4657298101 | HOUSING REAR SECTION | Additional rear casing for structural integrity |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Locking plate for gear retention |
| 4657301032 | SCREEN SHEET | Filter screen for hydraulic fluid |
| 4657301033 | SCREEN SHEET | Secondary filter screen for oil return |
| 0636100803 | CAP SCREW | High-torque fastener for critical joints |
Frequently Asked Questions
Q: Can this assembly be installed without replacing the housing sections?
A: Yes, but we strongly recommend inspecting the TRANSMISSION HOUSING and related sections for cracks or wear. Reusing damaged housings can lead to premature failure of the new assembly.
Q: What is the typical lifespan of the 4657.024.173 unit?
A: With proper maintenance and regular oil changes, this assembly can last 8,000 to 12,000 operating hours. Harsh environments or heavy loads may reduce this interval.
Q: Does this part include the torque converter?
A: Yes, the complete unit includes the integrated torque converter and all internal clutch packs. You only need to add the external housing components like the HOUS.FRONT SECT for a full rebuild.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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