Overview
The ZF 0636.101.328 CAP SCREW is a critical fastening component engineered specifically for the WG 150 Series transmission. This OEM genuine part secures the transmission housing assembly, ensuring proper clamping force and alignment of internal components. Positioned within the main casing, the SKU 0636.101.328 functions as a precision-threaded fastener that maintains structural integrity under high torque and thermal stress. Without this cap screw, the transmission’s internal pressure seals and gear alignment can be compromised, leading to operational inefficiencies.
Symptoms of Failure
- Transmission oil seepage around housing joints: A worn or stripped 0636.101.328 cap screw can cause fluid to escape from the casing, often visible as wet spots near bolt holes.
- Abnormal gear engagement noise: When this fastener loses tension, the housing may shift slightly, producing a metallic clatter during shifting or under load.
- Vibration during acceleration: Loose cap screws allow micro-movement in the transmission housing, transmitting vibration through the drivetrain at higher RPMs.
- Reduced hydraulic pressure: A compromised seal due to a failing cap screw can drop internal pressure, causing sluggish gear changes or slipping.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0636.101.328 |
| Material | High-tensile alloy steel, zinc-plated |
| Thread Size | M10 x 1.5 mm |
| Overall Length | 35 mm |
| Head Type | Hexagonal socket cap |
| Weight | 0.045 kg |
| OEM Reference | ZF 0636.101.328 |
| Torque Specification | 45 Nm (dry), 38 Nm (lubricated) |
Compatibility
This cap screw is primarily designed for the ZF WG 150 Series transmission. It is also compatible with the WG 180 and WG 200 models, where identical housing bolt patterns are used. The 0636.101.328 fits all WG 150 variants, including the WG150-2, WG150-3, and WG150-4, as well as certain WG 160 units with shared casing architecture. Always verify thread pitch and length against your specific transmission assembly before installation.
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