Overview
The ZF 0636.010.244 HEXAGON SCREW is a critical OEM genuine fastener engineered for the WG100, WG130, and WG131 transmission series. This hexagon screw secures key internal assemblies, ensuring precise clamping force within the gear train. As part of the Springs & Fasteners category, the SKU 0636.010.244 is designed to withstand high torque and vibration, preventing loosening during operation. It is commonly installed alongside the 4699035003 GP35 and the 4699101159 HOUSING to maintain structural integrity in the transmission housing.
Symptoms of Failure
- Transmission oil seepage at housing joints: A worn or stripped hexagon screw can compromise the seal between the 4699102188 INPUT and the main casing, leading to gradual fluid loss.
- Unusual gear rattle or vibration: When this fastener loses tension, internal components like the 4699103126 OUTPUT may shift, causing audible noise during acceleration.
- Intermittent gear slipping under load: A loose hexagon screw reduces clamping force on planetary gear sets, resulting in power loss and delayed engagement.
- Visible thread galling or corrosion: Over time, exposure to heat and oil can degrade the screw, making removal difficult and risking damage to the housing bore.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0636.010.244 |
| Type | Hexagon Screw (Bolt) |
| Material | High-Tensile Steel, Zinc-Plated |
| Thread Size | M10 x 1.5 (estimated) |
| Length | 30 mm (estimated) |
| Head Height | 8 mm (estimated) |
| Weight | 0.04 kg (approx.) |
| OEM Reference | ZF 0636.010.244 |
| Grade | 10.9 (estimated) |
Compatibility
This hexagon screw is designed for ZF off-highway and industrial transmissions, specifically the WG100, WG130, and WG131 series. It is also commonly used in the WG180 and WG200 models where similar housing fastening points exist. For complete assembly, pair this screw with the 0636104255 CAP SCREW and the 0631306174 CYLINDRICAL PIN for alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699035003 | GP35 | Gear pump for hydraulic pressure |
| 4699101159 | HOUSING | Main transmission casing |
| 4699102188 | INPUT | Input shaft assembly |
| 4699103126 | OUTPUT | Output shaft assembly |
| 4699109106 | BRAKE PARTS | Brake system components |
| 4699301254 | HOUSING | Secondary housing unit |
| 4699298049 | HOUSING KIT | Complete housing seal kit |
| 4699309123 | HOUSING COVER | Protective cover for housing |
| 0636104255 | CAP SCREW | Additional fastener for covers |
| 0631306174 | CYLINDRICAL PIN | Alignment pin for components |
