ZF 0636.100.690 CAP SCREW for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 0636.100.690 CAP SCREW is a critical OEM genuine fastener engineered for the WG100, WG130, and WG131 transmission series. This cap screw secures internal housing assemblies and maintains the structural integrity of the gear train under high torque loads. Specifically, it anchors the 4695101002: HOUSING and 4695301021: HOUSING components to the main transmission casing, preventing axial movement that could lead to misalignment. The SKU 0636.100.690 is precision-machined to ZF’s exacting tolerances, ensuring a vibration-resistant clamp load throughout the transmission’s service life.

Symptoms of Failure

When the ZF 0636.100.690 CAP SCREW fatigues or loosens, operators may notice these specific failure indicators:

• Oil seepage at housing joints – A compromised cap screw reduces clamping force, allowing transmission fluid to escape past the 0634801038: SEALING RING.
• Intermittent gear slipping under load – Loss of fastener tension permits the 4695301022: COVER to shift slightly, altering gear mesh depth.
• Abnormal metallic rattling from the bell housing – A loose cap screw creates clearance between mating surfaces, generating a distinct chatter during deceleration.
• Progressive vibration at highway speeds – Unsecured housing assemblies amplify driveline harmonics, often misdiagnosed as bearing wear.

Technical Specifications

Compatibility

This cap screw is a direct replacement for the following ZF transmission models: WG100, WG130, WG131, WG180, and WG200 series. It is also used in select WG120 and WG150 variants where the housing bolt pattern matches the M10 x 1.5 thread specification. Always verify the thread pitch against your existing fastener before installation.

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