Overview
The ZF 4616.305.007 LOCKING PLATE is a critical retention component engineered specifically for the WG 65 Series transmission. This OEM genuine part functions as a mechanical fastener that secures internal shafts and gears in their precise axial positions, preventing unwanted movement during high-torque operations. Located within the transmission housing assembly, the locking plate interfaces directly with the 4616101059: TRANSMISSION HOUSING to maintain structural integrity. The SKU 4616.305.007 ensures exact fitment and load distribution, making it indispensable for maintaining gear alignment and preventing rotational play in heavy-duty applications.
Symptoms of Failure
- Transmission oil seepage around housing joints: A worn locking plate can cause micro-movements in the housing, leading to gradual fluid loss. Search queries like “ZF WG65 oil leak from housing” often trace back to this part.
- Intermittent gear slipping under load: When the locking plate fatigues, shafts can shift slightly, causing incomplete gear engagement. This manifests as “WG65 gear slip during acceleration” in diagnostic reports.
- Abnormal metallic rattling from transmission bell housing: Loose retention allows shaft end-play, producing a distinct “ZF transmission rattle at idle” noise that worsens with temperature changes.
- Hard shifting or delayed engagement: Misalignment from a failed locking plate forces synchronizers to work harder, resulting in “WG65 hard shifting between gears” complaints from operators.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.305.007 |
| Material | High-strength spring steel (DIN 17222) |
| Thickness | 3.2 mm |
| Outer Diameter | 85 mm |
| Bolt Hole Pattern | 4 x 10.5 mm (equally spaced) |
| Weight | 0.12 kg |
| Surface Treatment | Zinc-nickel plated (corrosion resistant) |
| OEM Reference | ZF 4616.305.007 |
| Torque Specification | 45 Nm (with thread locker) |
Compatibility
This locking plate is primarily designed for the ZF WG 65 Series, but its retention geometry also suits several other ZF transmission models. Compatible units include the WG180, WG200, and WG250 series, as well as the Ecomat 4HP and 5HP families where similar shaft locking mechanisms are used. Always verify the bolt pattern matches your transmission housing before installation. The plate works in conjunction with 0636011038: HEXAGON SCREW and 0636011118: HEXAGON SCREW for secure mounting, while 0636016015: HEXAGON SCREW is used for auxiliary fastening points on larger housings.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Fastener for locking plate to housing |
| 0636011118 | HEXAGON SCREW | Secondary fastener for plate retention |
| 0636016015 | HEXAGON SCREW | Mounting screw for auxiliary brackets |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 0634313118 | O-RING | Seal between housing and cover plate |
| 0636304019 | SCREW PLUG | Oil drain or fill port closure |
| 0634801152 | SEALING RING | Gasket for fluid-tight connections |
| 0732611049 | FILTER INSERT | Hydraulic fluid filtration element |
| 0634303718 | O-RING | Seal for filter housing interface |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
