Overview
The ZF 4461.173.047 DIFFERENTIAL is a critical torque-distributing component located within the final drive assembly of heavy-duty construction machinery transmissions. As an OEM genuine part, it ensures that rotational power from the driveshaft is split evenly between the left and right axles, allowing wheels to rotate at different speeds during turns while maintaining maximum traction. The SKU 4461.173.047 is engineered to handle extreme loads and high torque demands typical in earthmoving equipment, graders, and loaders. This differential works in concert with the 4143101009: HOUSING and the 4143301025: HOUSING to create a sealed, lubricated environment that protects internal gears from contamination.
Symptoms of Failure
- Persistent oil leaks around the axle housing: When the differential seals degrade, hydraulic fluid seeps past the 0634313603: O-RING, leaving visible puddles under the machine and causing low lubricant levels.
- Grinding or chattering noise during turns: Worn spider gears or side gears produce a metallic grinding sound, especially when maneuvering under load, indicating the differential is no longer compensating for speed differences smoothly.
- Wheel hop or uneven tire wear: A failing differential causes one wheel to spin faster than the other, leading to vibration, reduced traction, and accelerated tread wear on the affected side.
- Complete loss of drive power to one wheel: Internal gear tooth breakage or a seized cross shaft results in the differential sending all torque to the wheel with least resistance, effectively stranding the machine.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4461.173.047 |
| OEM Reference | ZF 4461.173.047 |
| Material | Case-hardened alloy steel (gears); nodular cast iron (housing) |
| Weight | Approx. 18.5 kg (40.8 lbs) |
| Outer Diameter | 280 mm |
| Overall Length | 195 mm |
| Bolt Pattern | 8 x M12 on 220 mm PCD |
| Seal Type | Lip seal with integrated dust lip |
Compatibility
This differential is designed for ZF powershift transmissions commonly found in construction machinery. It is a direct fit for the WG180 and WG200 series, as well as the heavy-duty WG250 models. The 4461.173.047 also integrates into certain 4WG-200 and 5WG-200 drivelines used in wheel loaders and graders. When replacing this unit, always inspect the mating 4475280018: SCREW PLUG for thread damage and replace the 0634313591: O-RING to ensure a leak-free seal.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses the differential carrier assembly |
| 4143301025 | HOUSING | Opposite side housing for axle shaft support |
| 0634313603 | O-RING | Seals the housing joint against oil leaks |
| 4475280018 | SCREW PLUG | Closes the fill/drain port in the housing |
| 0501342341 | SUPPORT RING | Provides axial support for the differential bearings |
| 4143298457 | SEAL KIT | Contains all gaskets and seals for overhaul |
| 0634313591 | O-RING | Secondary seal for the differential cover |
| 0636101068 | CAP SCREW | Fastens the differential to the housing |
| 4143221013 | THROTTLE VALVE | Controls hydraulic flow to the differential lock |
| 0634304484 | O-RING | Seals the throttle valve connection |
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