Overview
The ZF 4616.305.061 COVER is a critical sealing component designed specifically for the WG 65 series transmission. This OEM genuine part mounts directly onto the transmission housing, providing a secure barrier that protects internal gear sets and hydraulic components from contamination while retaining essential lubrication. As a factory-specified cover, the SKU 4616.305.061 ensures precise fitment and durability under high-torque industrial applications. It works in concert with the 4616105415 OUTPUT and the TRANSMISSION HOUSING to maintain structural integrity within the drivetrain assembly.
Symptoms of Failure
- Hydraulic oil seepage around the cover perimeter: When the 4616.305.061 cover gasket degrades, transmission fluid can escape, leading to low oil levels and potential gear damage.
- Increased operating noise or vibration: A warped or cracked cover fails to dampen internal forces, causing audible whining or shuddering during gear shifts.
- Contaminant ingress causing premature wear: A compromised seal allows dirt and moisture to enter the transmission, accelerating wear on the HEXAGON SCREW fasteners and internal bearings.
- Intermittent gear slipping under load: Loss of hydraulic pressure from a leaking cover can result in delayed engagement or slipping, especially in heavy-duty WG 65 applications.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4616.305.061 |
| Material | Die-cast aluminum alloy with corrosion-resistant coating |
| Dimensions (L x W x H) | Approx. 180 mm x 120 mm x 25 mm |
| Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4616.305.061 |
| Fastener Torque Spec | 25 Nm (use 0636011118 HEXAGON SCREW or 0636016015 HEXAGON SCREW) |
| Sealing Components | 0634313118 O-RING and 0634303718 O-RING |
Compatibility
This cover is engineered for the ZF WG 65 series, but its design principles extend to several other ZF powershift transmissions. Based on the part type and mounting pattern, the 4616.305.061 is compatible with the following models: WG 65, WG 120, WG 180, and WG 200. It also fits select variants of the WG 135 and WG 150 series when used with the appropriate CYLINDRICAL PIN alignment kit. Always verify the OUTPUT FLANGE configuration to ensure correct installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105415 | OUTPUT | Transfers torque from transmission to driveline |
| 4616303144 | OUTPUT FLANGE | Connects output shaft to universal joint |
| 4616101094 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Secures cover to housing |
| 0636011118 | HEXAGON SCREW | Alternate fastener for cover mounting |
| 0636016015 | HEXAGON SCREW | High-torque fastener for heavy-duty use |
| 0631306085 | CYLINDRICAL PIN | Alignment pin for precise cover positioning |
| 0634313118 | O-RING | Seals cover-to-housing interface |
| 0732611049 | FILTER INSERT | Traps debris in hydraulic circuit |
| 0634303718 | O-RING | Secondary seal for cover bolt channels |
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