Overview
The ZF 0636.015.234 HEXAGON SCREW is a critical fastening element engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part secures internal housing assemblies, ensuring that gear trains and shaft components remain rigidly aligned under high torque loads. As a precision-machined fastener, the SKU 0636.015.234 prevents relative movement between mated surfaces, directly influencing drivetrain stability. When installed alongside the 5838022003: REAR AXLE and 5838109001: DIFFERENTIAL, this hexagon screw maintains the structural integrity of the entire power transfer assembly.
Symptoms of Failure
- Transmission oil seepage at housing joints: A loosened hexagon screw can compromise gasket compression, leading to slow fluid loss around the differential housing interface.
- Audible gear rattle under load: When the fastener fatigues, clearance increases between the 0750117075: TAPER ROLLER BEARING and its seat, producing a distinct metallic chatter during acceleration.
- Vibration in the driveline during cornering: Insufficient clamping force allows the 5838300128: DIFFERENTIAL HOUSING to shift slightly, transmitting harsh feedback through the chassis.
- Intermittent gear engagement failure: A stripped or stretched hexagon screw can cause misalignment of shift forks, resulting in hard or missed gear changes.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 0636.015.234 |
| Thread Size | M10 x 1.5 |
| Overall Length | 35 mm |
| Head Type | Hexagon (6-point) |
| Material | Alloy Steel, 10.9 Grade |
| Surface Treatment | Zinc-Nickel Plated |
| Weight | 0.04 kg |
| OEM Reference | ZF 0636.015.234 |
Compatibility
This hexagon screw is factory-specified for the ZF WG100, WG130, and WG131 series transmissions. It is also commonly used in the WG180 and WG200 models where identical housing bolt patterns exist. Always verify thread pitch and length against your specific transmission variant before installation. The fastener directly interfaces with the 5838300128: DIFFERENTIAL HOUSING and works in concert with the 5838022003: REAR AXLE assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838022003 | REAR AXLE | Transfers torque from differential to wheels |
| 5838109001 | DIFFERENTIAL | Distributes power between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on shafts |
| 5838300128 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329086 | SPRING PIN | Secures shift fork alignment |
| 5838300129 | THRUST WASHER | Reduces axial friction in gear sets |
| 5838300130 | THRUST WASHER | Controls end-play in differential |
| 5838300131 | AXLE BEVEL GEAR | Changes torque direction in differential |
| 5838300132 | COMPENS. STUB AXLE | Compensates for axle length variations |
| 5838300133 | COMPENS. STUB AXLE | Balances wheel hub alignment |
