Overview
The ZF 0730.002.636 WASHER for WG65 is an OEM genuine sealing component engineered to prevent fluid migration and maintain clamping force within the transmission assembly. Positioned between the TRANSMISSION HOUSING and mating flanges, this precision-machined washer ensures a leak-free interface under high-pressure operating conditions. As part of the WG 65 Series, the SKU 0730.002.636 is critical for maintaining hydraulic integrity and preventing contamination ingress. This washer is often replaced concurrently with HEXAGON SCREW fasteners to guarantee uniform torque distribution across the joint.
Symptoms of Failure
- External oil seepage at housing joints: A degraded 0730.002.636 washer allows transmission fluid to escape, leaving visible wet spots around the WG65 casing.
- Gradual pressure loss in hydraulic circuits: Worn washers compromise seal integrity, leading to erratic shift quality or delayed engagement under load.
- Contaminated fluid from external debris ingress: A failed washer permits dirt and moisture to enter the transmission, accelerating internal wear.
- Audible hissing or whistling near the housing: Compromised sealing can create air leaks, producing unusual noises during operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.002.636 |
| Material | Steel with zinc-nickel coating |
| Inner Diameter | 18.5 mm |
| Outer Diameter | 30.0 mm |
| Thickness | 2.5 mm |
| Weight | 12 g |
| OEM Reference | ZF 0730.002.636 |
| Hardness Class | 8.8 (equivalent) |
Compatibility
This washer is primarily designed for the ZF WG65 transmission series. Based on its dimensions and sealing application, it is also compatible with ZF WG180, WG200, and WG250 models where similar housing-to-cover interfaces exist. Always verify fitment against your specific transmission variant. For complete assembly, pair this washer with HEXAGON SCREW and HEXAGON SCREW fasteners to achieve proper clamping torque.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 0636011038 | HEXAGON SCREW | Fastener for housing and cover attachment |
| 0636011118 | HEXAGON SCREW | High-tensile bolt for flange connections |
| 0636016015 | HEXAGON SCREW | Threaded fastener for auxiliary mounting points |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for precise component positioning |
| 0634313118 | O-RING | Static seal for fluid passageways |
| 0636304019 | SCREW PLUG | Threaded closure for drain or fill ports |
| 0634801152 | SEALING RING | Metal gasket for high-pressure joints |
| 0732611049 | FILTER INSERT | Hydraulic fluid filtration element |
| 0634303718 | O-RING | Elastomeric seal for valve body connections |
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