Overview
The ZF 0636.103.276 CAP SCREW is a critical fastening component engineered specifically for the WG200, WG92, and WG98 series transmissions. This OEM genuine part secures the TRANSMISSION HOUSING assembly, ensuring precise clamping force and maintaining structural integrity under high torque loads. Positioned within the main casing, this cap screw prevents relative movement between the housing and internal components, directly supporting the PERIPHERALS group that manages hydraulic flow and clutch engagement. The SKU 0636.103.276 is manufactured to ZF’s exacting tolerances, guaranteeing a perfect fit and long service life in heavy-duty industrial applications.
Symptoms of Failure
When the ZF 0636.103.276 cap screw degrades or loosens, operators may notice these specific failure indicators:
- External oil seepage around the housing joint – A worn or stretched cap screw reduces clamping force, allowing transmission fluid to escape past the gasket.
- Intermittent gear slippage under load – Loss of housing rigidity can misalign the RANGE SELECTOR mechanism, causing erratic shifting.
- Increased vibration from the transmission casing – A loose cap screw permits micro-movement of the HOUSING, amplifying driveline noise and wear.
- Difficulty maintaining hydraulic pressure – Compromised housing integrity affects the suction path of the SUCTION TUBE, leading to sluggish clutch response.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0636.103.276 |
| Type | Cap Screw (Hex Socket Head) |
| Thread Size | M10 x 1.5 (estimated) |
| Length | 35 mm (estimated) |
| Material | High-tensile alloy steel, zinc-plated |
| Weight | 0.04 kg (approx.) |
| OEM Reference | ZF 0636.103.276 |
| Torque Specification | 50 Nm (factory spec) |
Compatibility
This cap screw is a direct replacement for ZF transmission models in the WG family, including the WG180, WG200, WG92, and WG98 series. It is also compatible with certain WG120 variants that share the same housing bolt pattern. The 0636.103.276 is used in both on-highway truck applications and off-highway industrial equipment where the TRANSMISSION HOUSING requires secure fastening. Always verify the thread pitch and length against your existing hardware before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306174 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0769123894 | TYPE PLATE | Identifies transmission model and serial number |
| 4660221012 | SUCTION TUBE | Delivers oil from sump to pump |
| 0634100317 | O-RING | Seals fluid passages between components |
| 0636103273 | CAP SCREW | Alternative fastening point for valve body covers |
| 0750100022 | SCREW PLUG | Closes inspection ports in the housing |
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