Overview
The ZF 4644.301.286 COVER PLATE is a critical sealing and structural component designed specifically for the WG 200 series of heavy-duty transmissions. This OEM genuine part sits on the exterior housing of the transmission, serving as a protective barrier that encloses internal hydraulic passages and mechanical assemblies. By maintaining proper fluid containment and preventing contamination ingress, the cover plate ensures consistent oil pressure and lubrication flow throughout the gear train. The SKU 4644.301.286 is precision-engineered to ZF’s original specifications, guaranteeing a perfect fit and long service life in demanding industrial applications such as construction vehicles, municipal trucks, and material handlers.
Symptoms of Failure
When the ZF 4644.301.286 cover plate deteriorates or becomes damaged, operators may notice several distinct failure indicators. Oil seepage around the transmission housing is the most common symptom, often appearing as a thin film of fluid near the cover plate perimeter. Gradual loss of transmission fluid without visible puddles can indicate a slow leak through a warped or cracked plate. Increased operating noise or gear whine may occur as the cover plate loses its sealing integrity, allowing air to enter the hydraulic system and causing cavitation. In severe cases, erratic shifting or delayed engagement can develop when fluid levels drop below optimal thresholds due to cover plate failure.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4644.301.286 |
| OEM Reference | ZF 4644.301.286 |
| Material | High-grade cast aluminum alloy |
| Weight | 1.8 kg (approx.) |
| Length | 210 mm |
| Width | 145 mm |
| Height | 35 mm |
| Bolt Hole Pattern | 6 x M10 (standard) |
| Surface Finish | Corrosion-resistant anodized coating |
Compatibility
This cover plate is engineered for the ZF WG 200 transmission series, including models such as the WG180, WG200, and WG210. It is also compatible with certain variants of the ZF Ecomat 4HP and 5HP series that share the same housing architecture. For proper installation, this part works in conjunction with the 4460165051 CONSOLE and the 4460368311 CONSOLE, which provide mounting support. Secure fastening is achieved using the 0636011429 HEXAGON SCREW and the 0730100365 WASHER to ensure proper torque distribution and vibration resistance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460165051 | CONSOLE | Mounting bracket for transmission support |
| 4460368311 | CONSOLE | Secondary mounting bracket for alignment |
| 0636011429 | HEXAGON SCREW | Fastener for cover plate attachment |
| 0730100365 | WASHER | Load distribution and anti-loosening |
| 4644105418 | DISCONNECTION | Hydraulic disconnection valve assembly |
| 4644305041 | ADAPTER | Interface adapter for hydraulic lines |
| 4460068159 | AXLE DRIVE | Axle drive gear component |
| 4460168651 | INPUT FLANGE | Input shaft connection flange |
| 4460368318 | FLANGE | Output flange for driveline |
| 4460368317 | DUST PROTECTION | Dust seal cover for housing |
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