Overview
The ZF 6053.308.366 CONTROL COVER is a critical OEM genuine component designed to seal and protect the valve body and hydraulic control assembly within ZF heavy-duty powershift transmissions. Positioned on the upper casing of the transmission, this cover prevents contamination ingress and maintains precise hydraulic pressure regulation for clutch engagement. As an integral part of the transmission’s control module, the SKU 6053.308.366 ensures that shift timing remains accurate under extreme loads in construction machinery. When replacing this cover, it is common to also inspect the 4108101112: HOUSING and the 4108201177: HOUSING for cracks or warping, as these components share the same mounting interface.
Symptoms of Failure
- Hydraulic oil leaks around the transmission control area – A worn or cracked control cover often results in visible seepage near the top of the gearbox, especially after prolonged operation in dusty environments.
- Erratic or delayed gear engagement – When the cover loses its seal, air enters the hydraulic circuit, causing inconsistent clutch pack pressure and rough shifting under load.
- Contaminated transmission fluid – A compromised cover allows dirt and debris to bypass the filter, leading to premature wear of internal valves and solenoids.
- Overheating of the transmission control unit – Loss of fluid volume from a leaking cover reduces cooling capacity, triggering thermal warnings on construction machinery dashboards.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 6053.308.366 |
| Material | Die-cast aluminum alloy with corrosion-resistant coating |
| Weight | 1.85 kg (4.08 lbs) |
| Dimensions (L x W x H) | 320 mm x 210 mm x 45 mm |
| OEM Reference | ZF 6053.308.366 (Genuine) |
| Sealing Surface | Precision-machined flat face with O-ring groove |
| Bolt Hole Pattern | 6 x M8 threaded holes on 280 mm centers |
Compatibility
This control cover is engineered for ZF WG-series powershift transmissions commonly used in wheel loaders, graders, and dump trucks. Based on its design and mounting configuration, the 6053.308.366 is compatible with the following ZF models: WG180, WG200, WG210, and WG250. It also fits select variants of the ZF 4WG-200 and 6WG-200 series. For complete assembly, ensure the 0636302056: SCREW PLUG is torqued to specification, and verify the condition of the 4108301304: BEARING COVER to prevent misalignment during reinstallation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101112 | HOUSING | Main transmission casing section |
| 4108201177 | HOUSING | Intermediate housing for gear cluster |
| 0636302056 | SCREW PLUG | Seals hydraulic passages in control cover |
| 4108301304 | BEARING COVER | Protects output shaft bearing |
| 4108306173 | GASKET | Provides sealing between cover and housing |
| 0750110040 | SHAFT SEAL | Prevents oil leakage at rotating shafts |
| 4108102042 | INPUT | Input shaft assembly for torque converter |
| 4108302099 | PLANET CARRIER | Holds planetary gears for speed reduction |
| 4108302007 | BEARINGSHEET | Shim set for bearing preload adjustment |
| 0635332196 | BALL BEARING | Supports rotating elements in gear train |
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