Overview
The ZF 0737.502.092 SLOTTED NUT is a critical fastening component engineered specifically for the WG65 transmission series. This OEM genuine part secures the output shaft assembly, ensuring precise axial retention of bearings and gears within the drivetrain. The slotted design allows for positive locking with a cotter pin or tab washer, preventing loosening under high torque and vibration. The SKU 0737.502.092 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged nuts in heavy-duty industrial applications. This nut interfaces directly with the 4616105413: OUTPUT shaft and the 4616203017: OUTPUT FLANGE, forming a secure connection that transmits power efficiently.
Symptoms of Failure
When the ZF 0737.502.092 slotted nut begins to fail, operators may notice several distinct performance issues. Oil leaks at the output shaft seal often occur because a loose nut allows the output flange to shift, damaging the seal lip. Gear slipping or erratic engagement can develop as axial play increases, causing misalignment between the output shaft and the 4616101117: TRANSMISSION HOUSING. Unusual whining or knocking noises from the transmission bell housing indicate bearing preload loss, directly linked to a compromised slotted nut. Vibration during load shifts is another common symptom, particularly in WG65 units operating under heavy torque, where the nut’s locking mechanism has fatigued.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0737.502.092 |
| Type | Slotted Nut (Castle Nut) |
| Thread Size | M30 x 1.5 (estimated) |
| Outer Diameter | 45 mm |
| Height | 18 mm |
| Material | Case-hardened steel, zinc-plated |
| Weight | 0.12 kg |
| OEM Reference | ZF 0737.502.092 |
| Locking Method | Cotter pin or tab washer slot |
Compatibility
This 0737.502.092 slotted nut is primarily designed for the ZF WG65 series transmissions. Based on its thread pattern and application, it is also compatible with the WG180, WG200, and WG250 models that share the same output shaft architecture. It fits both standard and heavy-duty variants where the output shaft requires a positive locking mechanism. Always verify thread pitch and shaft diameter against your specific transmission model before installation. The nut works in conjunction with the 0636011038: HEXAGON SCREW used for flange retention.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from transmission to driveshaft |
| 4616203017 | OUTPUT FLANGE | Connects output shaft to driveline components |
| 4616101117 | TRANSMISSION HOUSING | Encloses and supports internal gear sets |
| 0636011038 | HEXAGON SCREW | Secures output flange to shaft |
| 0636016015 | HEXAGON SCREW | Fastens housing and cover assemblies |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals oil passages between components |
| 0732611049 | FILTER INSERT | Traps debris in hydraulic circuit |
| 0634303718 | O-RING | Prevents fluid leaks at flange joints |
| 0636610082 | STUD | Provides threaded mounting for covers |
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