Overview
The ZF 0636.010.199 HEXAGON SCREW is a critical fastening component engineered for the WG150 and WG65 series transmissions. This OEM genuine part secures the 4616105415 OUTPUT assembly within the transmission housing, ensuring precise alignment and clamping force under high-torque conditions. Designed to withstand vibration and thermal cycling, this hexagon screw (SKU 0636.010.199) plays a vital role in maintaining the structural integrity of the drivetrain. It is commonly used in conjunction with the 4616303144 OUTPUT FLANGE to prevent axial movement and leakage at the output interface.
Symptoms of Failure
- Oil seepage at output flange: A loose or fatigued 0636.010.199 screw can cause the OUTPUT FLANGE seal to fail, leading to visible transmission fluid leaks around the rear housing.
- Gear engagement hesitation: When this hexagon screw loses its torque retention, the TRANSMISSION HOUSING may shift slightly, causing delayed or rough shifting in WG150/WG65 units.
- Abnormal driveline vibration: A stripped or broken 0636.010.199 screw allows the output shaft to wobble, producing low-frequency vibrations during acceleration or deceleration.
- Metallic rattling from bell housing: Loose fasteners can create a distinct rattle as the HEXAGON SCREW contacts internal components, indicating immediate replacement is needed.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0636.010.199 |
| Thread Size | M10 x 1.5 |
| Length | 35 mm |
| Head Type | Hexagon (6-point) |
| Material | High-tensile steel (10.9 grade) |
| Surface Finish | Zinc-plated, yellow passivated |
| Weight | 0.04 kg (0.09 lbs) |
| OEM Reference | ZF 0636.010.199 |
| Torque Spec | 50 Nm ± 5 Nm |
Compatibility
This hexagon screw is specifically designed for the ZF WG150 and WG65 transmission series. It also fits the WG180 and WG200 models where the output flange mounting pattern is identical. The 0636.010.199 screw is interchangeable with earlier revisions (0636.010.198) and is a direct replacement for units requiring a M10 x 1.5 thread pitch. Always verify thread condition on the TRANSMISSION HOUSING before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105415 | OUTPUT | Transfers torque from transmission to driveshaft |
| 4616303144 | OUTPUT FLANGE | Seals and connects output shaft to driveline |
| 4616101094 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Secures intermediate plate to housing |
| 0636011118 | HEXAGON SCREW | Fastens valve body cover |
| 0636016015 | HEXAGON SCREW | Mounts oil pump assembly |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals output flange to housing |
| 0732611049 | FILTER INSERT | Traps debris in hydraulic circuit |
| 0634303718 | O-RING | Seals oil cooler line connection |
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