Overview
The ZF 2050.309.069 SHIM is a precision-engineered spacer component designed for the WG 65 series of heavy-duty transmissions. This OEM genuine part, identified by SKU 2050.309.069, is installed between the transmission housing and the clutch assembly to establish the correct axial clearance and preload. By maintaining the precise gap required for optimal gear engagement, this shim prevents metal-on-metal contact and ensures smooth power transfer through the drivetrain. It is a critical adjustment element that directly influences the operational lifespan of the entire gearbox.
Symptoms of Failure
When the ZF 2050.309.069 SHIM wears or becomes compressed beyond tolerance, operators will notice specific performance issues. Oil leaks from the bell housing area often occur as the shim loses thickness, disrupting the seal between the TRANSMISSION HOUSING and the clutch pack. Gear slipping under load is another common symptom, particularly when shifting between second and third gear, as the incorrect clearance reduces clutch clamping force. Vibrations during acceleration indicate that the shim has fatigued, allowing the shaft to wobble slightly. Finally, hard shifting or grinding noises when engaging reverse gear suggest the shim has worn unevenly, requiring immediate replacement.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2050.309.069 |
| Material | Hardened Steel (C45E) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 52.5 mm |
| Thickness | 1.50 mm (selective fit) |
| Weight | 0.025 kg |
| OEM Reference | ZF 2050.309.069 |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
Compatibility
This shim is specifically engineered for the ZF WG 65 series transmission family. It is a direct fit for the WG65, WG80, WG120, WG150, WG180, and WG200 models. The 2050.309.069 part is used in both on-highway truck applications and off-highway construction equipment where the WG series is installed. Always verify the existing shim thickness before ordering, as selective fit shims are used to achieve precise end-play tolerances in the main shaft assembly.
Related Components
The following parts are commonly replaced or inspected alongside the 2050.309.069 SHIM during a transmission overhaul. They are installed in the same housing assembly and contribute to the overall sealing and structural integrity of the gearbox.
| Part Number | Name | Function |
|---|---|---|
| 4616101066 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 0636011118 | HEXAGON SCREW | Fastens housing halves together |
| 4616301307 | HOUSING | Rear bearing support housing |
| 4616301309 | HOUSING | Front bearing support housing |
| 0636011038 | HEXAGON SCREW | M10 bolt for clutch pack retention |
| 0636016015 | HEXAGON SCREW | M12 bolt for housing flange |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0634313118 | O-RING | Seals oil passages between housings |
| 0636304019 | SCREW PLUG | Closes oil drain port |
| 0634801152 | SEALING RING | Copper washer for plug seal |
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