Overview
The ZF 0730.002.633 WASHER for WG65 is a precision-engineered OEM genuine component designed to function as a critical sealing and load-distribution element within the WG 65 Series transmission assembly. This hardened steel washer sits between the TRANSMISSION HOUSING and fastening hardware, preventing fluid bypass and maintaining correct clamping force on internal gear sets. As an OEM part, SKU 0730.002.633 ensures exact dimensional tolerances required for high-torque industrial applications, directly supporting oil pressure integrity and shaft alignment in heavy-duty ZF transmissions.
Symptoms of Failure
- External oil seepage at housing joints – A worn or crushed 0730.002.633 washer often causes visible fluid weeping around the transmission housing mating surfaces, leading to gradual lubricant loss.
- Transmission gear slipping under load – When this washer fails to maintain proper preload, internal clearances shift, resulting in intermittent gear engagement and power loss during operation.
- Abnormal housing vibration or noise – Deterioration of the washer’s compressive properties allows fastener loosening, producing metallic rattling or low-frequency hum from the transmission case.
- Increased oil contamination – A compromised seal allows debris ingress past the housing interface, accelerating wear on bearings and synchronizers throughout the WG65 assembly.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number (SKU) | 0730.002.633 |
| Material | Hardened carbon steel (C45E) |
| Outer Diameter | 30.0 mm |
| Inner Diameter | 18.5 mm |
| Thickness | 2.5 mm |
| Weight | 0.012 kg |
| OEM Reference | ZF 0730.002.633 |
| Surface Finish | Zinc-plated (ISO 4042) |
| Hardness Rating | HRC 38-42 |
Compatibility
This washer is engineered for the ZF WG 65 Series transmission family. Based on its design as a housing-sealing component, it is compatible with the following ZF models: WG65, WG120, WG180, WG200, and WG250. The 0730.002.633 washer is used in conjunction with HEXAGON SCREW (0636011038), HEXAGON SCREW (0636011118), and HEXAGON SCREW (0636016015) to secure the transmission housing assembly. Always verify your specific transmission serial number against ZF parts documentation to confirm fitment for non-WG65 variants.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Fastener for housing mounting points |
| 0636011118 | HEXAGON SCREW | Secondary housing retention bolt |
| 0636016015 | HEXAGON SCREW | High-torque housing fastener |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 0634313118 | O-RING | Static seal between housing sections |
| 0636304019 | SCREW PLUG | Oil drain port closure |
| 0634801152 | SEALING RING | Gasket for plug interface |
| 0732611049 | FILTER INSERT | Oil filtration element |
| 0634303718 | O-RING | Filter housing seal |
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