Overview
The ZF 6053.308.350 CONTROL COVER is a critical OEM genuine component that seals and protects the valve body assembly within ZF heavy-duty powershift transmissions. This precision-machined cover houses the hydraulic control passages and shift solenoids, ensuring consistent oil pressure delivery for smooth gear engagement. Commonly found in construction machinery such as wheel loaders, graders, and dozers, the SKU 6053.308.350 directly interfaces with the main transmission housing to prevent contamination and maintain system integrity. When paired with the 4108101068 HOUSING and 4108201177 HOUSING, this cover forms a sealed environment critical for hydraulic circuit reliability.
Symptoms of Failure
- External oil leaks at the control cover gasket: Worn sealing surfaces or a cracked cover allow transmission fluid to weep, often pooling beneath the vehicle. This is a common long-tail search query for “ZF transmission control cover oil leak repair.”
- Erratic or delayed gear engagement: A warped or damaged 6053.308.350 cover disrupts hydraulic pressure to shift solenoids, causing hesitation or harsh shifts, especially in cold weather.
- Contaminated transmission fluid: Cracks in the cover let dirt and moisture enter the valve body, leading to premature wear of internal components. Search for “ZF WG200 control cover contamination symptoms.”
- Overheating due to restricted oil flow: A deformed cover can pinch internal passages, reducing lubrication and causing transmission temperatures to spike during heavy loading.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 6053.308.350 |
| Material | Die-cast aluminum alloy (A380) |
| Weight | 2.8 kg (6.2 lbs) |
| Dimensions (L x W x H) | 320 mm x 180 mm x 45 mm |
| OEM Reference | ZF 6053.308.350 (Genuine) |
| Surface Finish | Anodized with sealing gasket groove |
| Bolt Torque Spec | 25 Nm (18.4 lb-ft) |
Compatibility
This control cover is engineered for ZF powershift transmissions commonly used in construction machinery. Based on its design and port configuration, the 6053.308.350 is compatible with the following ZF transmission models:
- ZF WG180 (used in compact wheel loaders and telehandlers)
- ZF WG200 (medium-duty graders and dozers)
- ZF WG210 (heavy-duty articulated dump trucks)
- ZF 4WG-200 (4-speed powershift variants)
During installation, always replace the 0636302056 SCREW PLUG and 4108301304 BEARING COVER to ensure proper sealing and bearing preload. For complete assembly, verify the condition of the 4108101068 HOUSING and 4108201177 HOUSING for cracks or distortion.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101068 | HOUSING | Main transmission housing for gear and shaft support |
| 4108201177 | HOUSING | Intermediate housing for clutch pack assembly |
| 0636302056 | SCREW PLUG | Seals oil passages in the control cover |
| 4108301304 | BEARING COVER | Retains output shaft bearing and preload |
| 4108306173 | GASKET | Provides leak-proof seal between cover and housing |
| 0750110040 | SHAFT SEAL | Prevents fluid leakage at rotating shafts |
| 0636302013 | SCREW PLUG | Drain or vent plug for hydraulic circuits |
| 0501309567 | THERMOMETER | Monitors transmission oil temperature |
| 4108338020 | ADAPTER | Connects control cover to external hydraulic lines |
| 4108111050 | POWER TAKE-OFF | Drives auxiliary hydraulic pumps from transmission |
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