Overview
This OEM genuine ZF 2093.078.026 T 7226 L is a critical internal component designed for heavy-duty construction machinery transmissions. Specifically engineered to manage torque distribution and rotational stability within the differential assembly, this part ensures smooth power transfer from the driveshaft to the axle system. The SKU 2093.078.026 is precision-machined to factory tolerances, serving as a direct replacement for worn units in ZF powershift transmissions. It integrates directly with the differential housing and works in concert with the 2093109002: DIFFERENTIAL to maintain gear alignment under heavy loads.
Symptoms of Failure
When the ZF 2093.078.026 begins to degrade, operators often notice distinct operational issues. A common symptom is intermittent gear slippage under load, particularly when the machine is climbing or pushing heavy material. Another frequent failure sign is low-frequency whining or grinding noises emanating from the transmission housing during acceleration. You may also observe metal particles in the transmission fluid during routine oil changes, indicating internal wear. Finally, erratic engagement of forward or reverse gears can occur, especially after prolonged operation in high-torque applications.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 2093.078.026 |
| OEM Reference | ZF T 7226 L |
| Material | Case-hardened alloy steel |
| Weight | 2.85 kg (6.28 lbs) |
| Outer Diameter | 128 mm |
| Internal Spline Count | 24 |
| Heat Treatment | Carburized & tempered |
Compatibility
This genuine ZF part is designed for use in the following transmission models: WG180, WG200, WG210, and WG250 series. It is also compatible with select variants of the Ecomat 2 and Ecomat 4 transmissions used in wheel loaders, graders, and dump trucks. Always verify the existing differential assembly configuration before installation. For a complete rebuild, consider pairing this unit with the 0750117075: TAPER ROLLER BEARING and the 2093209095: DIFFERENTIAL to ensure optimal axial load support.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque between axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209095 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309071 | DIFF.HOUSING | Encloses and protects gear set |
| 0631100223 | SPRING PIN | Secures components in alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hubs |
| 5838300811 | THRUST WASHER | Controls end-play in gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Changes torque direction |
Frequently Asked Questions
Q: Can the ZF 2093.078.026 be installed without removing the entire transmission?
A: Yes, in most WG180 and WG200 models, this part is accessible after removing the differential cover. However, you must also inspect the 2093309071: DIFF.HOUSING for cracks or warping during service.
Q: What is the typical lifespan of this part in a wheel loader?
A: Under normal operating conditions with regular oil changes, the 2093.078.026 can last 6,000 to 8,000 hours. Premature failure often occurs if the 0750117075: TAPER ROLLER BEARING is not replaced simultaneously.
Q: Does this part require special tools for torque specification?
A: Yes, a calibrated torque wrench is mandatory. The retaining nut for this component must be torqued to 280 Nm, then rotated an additional 60 degrees. Always use a new 0631100223: SPRING PIN during reassembly to prevent loosening.
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