Overview
The ZF 0636.011.158 HEXAGON SCREW is a critical fastening component engineered specifically for the WG200 series transmission assembly. This OEM genuine part secures the housing cover and internal bearing retainers, ensuring precise clamping force within the gear train. The SKU 0636.011.158 is machined from high-tensile steel to withstand the extreme torsional loads and thermal cycling common in heavy-duty industrial transmissions. Without this hexagon screw, the structural integrity of the 4460115043 HOUSING assembly would be compromised, leading to misalignment of the planetary gears.
Symptoms of Failure
- Transmission oil seepage at the housing joint: A loose or fatigued hexagon screw allows the 4469315012 AXLE DRIVE HOUSING to separate slightly, creating a path for ATF fluid to weep out during operation.
- Audible clicking or knocking from the gearbox: When the 0636.011.158 screw loses torque, the 0750117406 TAPER ROLLER BEARING can shift axially, producing metallic impact sounds under load.
- Vibration during gear engagement: Insufficient clamping force from a stripped hexagon screw causes the 0750117802 TAPERED ROLLER BEARING to wobble, transmitting vibration through the driveline.
- Premature bearing wear: A failing screw allows micro-movement in the bearing bore, accelerating fatigue on both the bearing and the screw threads.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0636.011.158 |
| Type | Hexagon Head Screw |
| Thread Size | M10 x 1.5 |
| Length | 35 mm |
| Material | Alloy Steel, 10.9 Grade |
| Surface Treatment | Zinc-Nickel Plated |
| Weight | 0.042 kg |
| OEM Reference | ZF 0636.011.158 |
| Torque Specification | 45 Nm + 90° |
Compatibility
This hexagon screw is primarily designed for the ZF WG200 series transmissions, including models WG180, WG200, and WG210. It is also used in select WG150 variants where the housing bolt pattern matches. The 0636.011.158 screw interfaces directly with the 4460115043 HOUSING and the 4469315012 AXLE DRIVE HOUSING in these assemblies. Always verify thread pitch and length against your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Main transmission casing |
| 4469315012 | AXLE DRIVE HOUSING | Output shaft enclosure |
| 0750117406 | TAPER ROLLER BEARING | Radial and axial load support |
| 0750117802 | TAPERED ROLLER BEARING | Secondary bearing for shaft alignment |
| 0734319337 | SHAFT SEAL | Prevents fluid leakage at shaft exit |
| 0730161317 | WASHER | Load distribution under screw head |
| 0730161451 | WASHER | Spacer for bearing preload |
| 0730161452 | WASHER | Thin shim for axial adjustment |
| 0730161453 | WASHER | Thick shim for clearance setting |
| 0730161340 | WASHER | Lock washer for vibration resistance |
