Overview
The ZF 0636.610.028 STUD is a precision-engineered fastening component designed for the WG 200 and WG 65 transmission series. This OEM genuine part serves as a critical locating and securing element within the transmission assembly, ensuring proper alignment and clamping force between mating surfaces. The stud functions by providing a threaded anchor point that distributes load evenly, preventing loosening under high-torque conditions. When installed alongside the TRANSMISSION HOUSING, this stud maintains structural integrity and prevents axial movement. The SKU 0636.610.028 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged studs in heavy-duty industrial applications.
Symptoms of Failure
- Oil seepage around mounting points: A worn or stretched 0636.610.028 stud can cause uneven clamping pressure, leading to transmission fluid leaks at the housing interface. This is often noticed as a slow drip after extended operation.
- Abnormal gear engagement noise: When the stud fails to maintain proper alignment, the OUTPUT shaft may experience slight misalignment, resulting in a whining or grinding sound during shifting.
- Vibration during load cycles: A compromised stud allows micro-movement between components, causing noticeable vibration in the driveline, particularly when the OUTPUT FLANGE is under stress.
- Thread stripping or galling: Over-torquing or corrosion can cause the stud’s threads to deform, making it impossible to achieve proper fastening with the HEXAGON SCREW that secures it.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0636.610.028 |
| Material | High-tensile alloy steel (Grade 10.9 equivalent) |
| Thread Size | M10 x 1.5 (estimated) |
| Overall Length | 45 mm (estimated) |
| Thread Length | 25 mm (estimated) |
| Weight | 0.035 kg (estimated) |
| Surface Treatment | Zinc-plated with yellow passivation |
| OEM Reference | ZF 0636.610.028 |
| Torque Specification | 45 Nm (refer to service manual) |
Compatibility
This ZF 0636.610.028 STUD is specifically engineered for the WG 200 Series and WG 65 Series transmissions. It is commonly found in the following ZF model variants: WG180, WG200, WG65, and WG120. The stud is used in the clutch housing and transmission case mounting points, where it works in conjunction with the TRANSMISSION HOUSING to secure the OUTPUT assembly. For applications requiring additional fastening, the HEXAGON SCREW is often used in adjacent positions. Always verify compatibility with your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from transmission to driveline |
| 4616203017 | OUTPUT FLANGE | Connects output shaft to universal joint |
| 4616101117 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Secures stud and housing components |
| 0636016015 | HEXAGON SCREW | Alternative fastening for adjacent mounts |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for precise positioning |
| 0634313118 | O-RING | Seals fluid between housing and flange |
| 0732611049 | FILTER INSERT | Traps debris in hydraulic circuit |
| 0634303718 | O-RING | Secondary seal for pressure ports |
| 0636610082 | STUD | Similar fastening stud for alternate positions |
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