Overview
The ZF 0636.102.310 HEXAGON SCREW is a critical fastening element designed to secure internal transmission assemblies within the WG100, WG130, and WG131 series. This OEM genuine part ensures precise clamping force on gear trains and differential housings, preventing axial displacement during high-torque operations. As a structural fastener, it directly interfaces with the 5838300626: DIFFERENTIAL HOUSING to maintain alignment of rotating components. The SKU 0636.102.310 is engineered to withstand shear stresses and vibration fatigue in heavy-duty industrial transmissions.
Symptoms of Failure
- Oil seepage at housing joints: A loosened hexagon screw compromises the seal between the differential housing and transmission casing, leading to gradual hydraulic fluid loss.
- Abnormal gear rattle during load shifts: Worn threads or stripped hex heads allow micro-movement in the 2093209023: DIFFERENTIAL assembly, producing metallic clicking sounds under torque.
- Premature bearing wear: Insufficient clamping force from a degraded screw causes the 0750117075: TAPER ROLLER BEARING to operate outside its designed preload range, accelerating fatigue.
- Torque loss in final drive: A fractured hexagon screw can detach, allowing the 5838109010: DIFFERENTIAL to shift axially, resulting in intermittent power delivery.
Technical Specifications
| Parameter | Value |
|---|---|
| Thread Size | M10 x 1.5 |
| Hex Head Width | 16 mm (AF) |
| Overall Length | 45 mm |
| Material | Alloy Steel 42CrMo4 + QT |
| Surface Treatment | Zinc-Nickel Plating (DIN 50979) |
| Weight | 0.042 kg |
| OEM Reference | ZF 0636.102.310 |
| Torque Spec | 48 Nm + 90° angle |
Compatibility
This hexagon screw is validated for ZF WG100, WG130, and WG131 transmission models. It also applies to WG180 and WG200 variants when used in conjunction with the 5838300626: DIFFERENTIAL HOUSING assembly. Always verify thread pitch and length against your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631329088 | SPRING PIN | Locks gear alignment in planetary sets |
| 5838300811 | THRUST WASHER | Reduces axial friction on differential gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers torque to wheel axles |
| 5838300633 | AXLE | Supports differential side gears |
| 5838300753 | THRUST WASHER | Spacer for bevel gear preload |
| 5838300818 | THRUST WASHER | Compensates for thermal expansion in housing |
