Overview
The ZF 0636.100.574 CAP SCREW is a critical OEM genuine fastener engineered for the WG100, WG130, and WG131 transmission series. This cap screw secures the 4108101112: HOUSING assembly, ensuring precise clamping force to maintain internal gear alignment and hydraulic pressure integrity. Positioned within the transmission’s main casing, this part prevents axial movement of the 4108201177: HOUSING components. The SKU 0636.100.574 is directly interchangeable with original ZF factory specifications, guaranteeing a perfect fit for heavy-duty industrial applications.
Symptoms of Failure
When the 0636.100.574 CAP SCREW fatigues or loosens, operators may notice these specific failure indicators:
- Transmission oil seepage around the housing joint – A loose cap screw compromises the seal between the 4108301304: BEARING COVER and the main casing, leading to visible fluid loss.
- Intermittent gear slipping under load – Insufficient clamping force allows the 0636302056: SCREW PLUG assembly to shift, disrupting torque transfer.
- Abnormal vibration or rattle from the bell housing – A broken cap screw creates play in the 4108102042: INPUT shaft support structure.
- Increased metallic debris in the oil filter – Worn threads from a stripped cap screw generate fine steel particles that circulate through the system.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0636.100.574 |
| Thread Size | M10 x 1.5 (estimated) |
| Overall Length | 35 mm |
| Head Type | Hexagon socket (Allen) |
| Material | High-tensile steel, zinc-plated |
| Weight | 0.04 kg |
| OEM Reference | ZF 0636.100.574 |
| Torque Specification | 45 Nm (dry) |
Compatibility
This cap screw is specifically designed for the ZF WG100, WG130, and WG131 transmission models. It also fits the WG180 and WG200 series when used in conjunction with the 4108306173: GASKET and 0750110040: SHAFT SEAL kits. For WG250 and WG300 variants, verify thread pitch compatibility with the 4108302099: PLANET CARRIER mounting points. Always replace in sets with the 4108302007: BEARINGSHEET to maintain even load distribution.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101112 | HOUSING | Main transmission casing |
| 4108201177 | HOUSING | Intermediate housing section |
| 0636302056 | SCREW PLUG | Oil drain/fill port closure |
| 4108301304 | BEARING COVER | Seals bearing cavity |
| 4108306173 | GASKET | Prevents fluid leaks |
| 0750110040 | SHAFT SEAL | Output shaft sealing |
| 4108102042 | INPUT | Input shaft assembly |
| 4108302099 | PLANET CARRIER | Planetary gear support |
| 4108302007 | BEARINGSHEET | Bearing shim set |
| 0635332196 | BALL BEARING | Rotational support |
