Overview
The ZF 2050.309.066 SHIM is a precision-engineered adjustment component designed exclusively for the WG 65 series of heavy-duty transmissions. This OEM genuine part, identified by SKU 2050.309.066, is installed between the transmission housing and the bearing support assembly to establish the correct axial clearance and preload for rotating elements. By compensating for manufacturing tolerances, this shim ensures that gear meshing remains within factory specifications, preventing premature wear on internal components. It is typically paired with a TRANSMISSION HOUSING to maintain structural integrity under high torque loads.
Symptoms of Failure
- Excessive end-play or axial movement in the output shaft, often felt as a “clunk” during gear engagement or load reversal.
- High-frequency whining noise from the transmission under load, indicating incorrect gear mesh depth due to shim wear or deformation.
- Oil leaks at the housing interface caused by vibration loosening the assembly, which can compromise the seal between the HOUSING and the HOUSING components.
- Intermittent gear slipping in higher ranges, particularly when the transmission is hot, as clearance tolerances drift beyond acceptable limits.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2050.309.066 |
| Material | Carbon steel (C45E), case-hardened |
| Thickness | 0.50 mm ± 0.02 mm |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.0 mm |
| Weight | 12 g |
| OEM Reference | ZF 2050.309.066 |
| Surface Finish | Ground, deburred edges |
Compatibility
This shim is engineered for the ZF WG 65 series, which includes models such as the WG65, WG80, WG120, WG150, WG180, and WG200. It is a critical component in the main shaft bearing preload stack. For proper installation, always secure the assembly using a HEXAGON SCREW torqued to factory specifications. The shim must be paired with the correct TRANSMISSION HOUSING to avoid interference with planetary gear sets.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101066 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011118 | HEXAGON SCREW | Fastener for housing and bearing caps |
| 4616301307 | HOUSING | Intermediate support housing for clutch pack |
| 4616301309 | HOUSING | Rear housing for output shaft assembly |
| 0636011038 | HEXAGON SCREW | M10 bolt for flange connections |
| 0636016015 | HEXAGON SCREW | M12 bolt for heavy-duty mounting |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing centering |
| 0634313118 | O-RING | Static seal for oil passages |
| 0636304019 | SCREW PLUG | Sealing plug for inspection ports |
| 0634801152 | SEALING RING | Copper gasket for high-pressure joints |
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