Overview
The ZF 4644.306.514 COVER is a critical sealing and protective component engineered for the WG 180 and WG 200 transmission series. Positioned on the exterior of the transmission housing, this OEM genuine part shields internal gear assemblies from contaminants while maintaining proper oil pressure. As a direct replacement for the original equipment, the SKU 4644.306.514 ensures a precise fit within the WG 250 Series category, preventing debris ingress and structural fatigue. This cover works in concert with the TRANSMISSION HOUSING to create a sealed environment essential for long-term drivetrain reliability.
Symptoms of Failure
- Hydraulic oil seepage around the cover perimeter: A worn gasket or cracked cover leads to visible fluid loss, often noticed as drips under the transmission bell housing.
- Abnormal gear engagement noise: When the cover loosens, internal pressure drops, causing delayed or harsh shifting in WG 180 and WG 200 units.
- Contaminated transmission fluid: A compromised seal allows dirt and moisture to enter, resulting in sludge buildup and reduced lubrication efficiency.
- Visible corrosion or warping on the cover surface: Thermal cycling can distort the metal, creating gaps that compromise the entire HOUSING assembly integrity.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.306.514 |
| Material | Die-cast aluminum alloy (A380) |
| Weight | 1.2 kg (2.65 lbs) |
| Outer Diameter | 180 mm |
| Bolt Hole Pattern | 6 x M10 on 150 mm PCD |
| OEM Reference | ZF 4644.306.514 |
| Sealing Surface Finish | Ra 0.8 µm |
Compatibility
This cover is specifically designed for ZF WG 180 and WG 200 transmissions, commonly found in heavy-duty construction and agricultural machinery. It also fits select variants within the WG 250 Series where the mounting flange dimensions match. For proper installation, ensure the mating COVER and CONNECTING PART are free of debris. Always verify compatibility with your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101062 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4646301104 | HOUSING | Secondary enclosure for valve body |
| 4646301300 | COVER | Access panel for internal inspection |
| 4646323018 | CONNECTING PART | Link between housing and cover |
| 0636015304 | HEXAGON SCREW | Fastener for cover attachment |
| 0636101828 | CAP SCREW | Threaded bolt for high-torque joints |
| 4646301100 | COVER SHEET | Thin protective plate |
| 4646301112 | COVER SHEET | Alternate thickness cover plate |
| 0730365067 | TYPE PLATE | Identification label for transmission |
| 0631311009 | GROOVED STUD | Alignment pin for precise mounting |
