Overview
The ZF 0636.015.279 HEXAGON SCREW is a critical fastening component engineered for the WG180, WG181, WG200, and WG201 series transmissions. This OEM genuine part secures the 2094301045: HOUSING assembly to the main gear casing, ensuring precise clamping force to prevent fluid migration and structural misalignment. The SKU 0636.015.279 is specifically designed to withstand high torsional loads and thermal cycling within the transmission’s internal environment. Without this screw, the 2094101011: TRANSMISSION HOUSING cannot maintain its seal integrity, leading to performance degradation.
Symptoms of Failure
- Transmission fluid seepage at housing joints: When the 0636.015.279 loses torque retention, oil escapes around the mating surfaces, often mistaken for gasket failure.
- Audible clicking or rattling from the gear case: A loose hexagon screw allows the 2094301044: COVER to vibrate against the housing, creating metallic noise during gear shifts.
- Intermittent gear slipping under load: Insufficient clamping force permits micro-movement of internal components, disrupting the 0635460022: BALL bearing preload and causing torque loss.
- Corrosion or thread galling on removal: Exposure to hot transmission oil degrades the screw’s surface, making future service difficult and risking stripped threads in the housing.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0636.015.279 |
| Type | Hexagon Screw (Socket Head Cap Screw) |
| Thread Size | M10 x 1.5 (estimated) |
| Length | 30 mm (estimated) |
| Material | High-tensile steel, zinc-nickel plated |
| Weight | 0.035 kg (approx.) |
| OEM Reference | ZF 0636.015.279 |
| Torque Specification | 45 N·m (factory spec) |
Compatibility
This hexagon screw is a direct replacement for ZF WG180, WG181, WG200, and WG201 series transmissions. It is used in both on-highway and off-highway applications, including construction loaders and agricultural tractors. The 0636.015.279 interfaces with the 2094301045: HOUSING and the 2094101011: TRANSMISSION HOUSING in all variants. Always verify thread pitch and length against your specific transmission model before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101011 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 2094301045 | HOUSING | Secondary cover housing for valve body |
| 0635460022 | BALL | Check ball for hydraulic circuit sealing |
| 2094301044 | COVER | Access cover for internal inspection |
| 0750111371 | SHAFT SEAL | Prevents oil leakage at rotating shafts |
| 0634303085 | O-RING | Static seal for housing joints |
| 2094301030 | GASKET | Flange gasket for oil pan |
| 0631306670 | CYLINDRICAL PIN | Alignment pin for housing doweling |
| 0636011356 | HEXAGON SCREW | Alternate screw for different torque class |
| 4475280060 | SCREW PLUG | Sealing plug for oil drain port |
