Overview
The ZF 0730.300.332 WASHER is a precision-engineered OEM genuine component designed specifically for the WG 65 Series transmission. This hardened steel washer functions as a critical load-spreading element between fasteners and the transmission housing, ensuring even distribution of clamping forces during assembly. Installed on the main casing interface, the SKU 0730.300.332 prevents galling and deformation when securing the TRANSMISSION HOUSING with mating bolts. As a factory-specification part, it maintains the exact dimensional tolerances required for long-term reliability in heavy-duty industrial drivetrains.
Symptoms of Failure
- Oil seepage at bolt interfaces: A worn or crushed washer allows fastener loosening, creating micro-gaps that lead to gradual transmission fluid leaks around the housing perimeter.
- Bolt torque retention loss: When the washer fatigues, hexagon screws cannot maintain proper clamping force, resulting in audible rattling or vibration during gear engagement.
- Housing surface indentation: A collapsed washer causes direct metal-on-metal contact, leaving permanent marks on the transmission casing that compromise future seal integrity.
- Intermittent gear slippage: Insufficient bolt preload from a degraded washer allows slight housing flex, altering shaft alignment and causing unpredictable power delivery under load.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.300.332 |
| Inner Diameter | 14.2 mm |
| Outer Diameter | 28.0 mm |
| Thickness | 3.5 mm |
| Material | Case-hardened carbon steel (C45E) |
| Surface Treatment | Zinc-plated, passivated |
| Weight | 12 grams |
| OEM Reference | ZF 0730.300.332 |
| Hardness Rating | HRC 38-42 |
Compatibility
While primarily designed for the WG 65 Series, this washer is also compatible with several ZF industrial transmission models that share the same bolt pattern and housing geometry. Verified applications include the WG180, WG200, and WG250 series, as well as earlier WG120 variants. Always cross-reference your transmission serial number with the OEM parts catalog. For complete assembly, this washer is typically paired with a HEXAGON SCREW (M14 thread), though some applications use the shorter HEXAGON SCREW or the heavy-duty HEXAGON SCREW depending on housing depth.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main casing assembly |
| 0636011038 | HEXAGON SCREW | M14 x 1.5 bolt for housing |
| 0636011118 | HEXAGON SCREW | M14 x 1.5 bolt (shorter shank) |
| 0636016015 | HEXAGON SCREW | M14 x 1.5 heavy-duty bolt |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0634313118 | O-RING | Housing seal gasket |
| 0636304019 | SCREW PLUG | Oil drain port closure |
| 0634801152 | SEALING RING | Copper crush washer for plug |
| 0732611049 | FILTER INSERT | Internal oil filtration element |
| 0634303718 | O-RING | Filter housing seal |
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