Overview
The ZF 0730.005.475 WASHER is a precision-engineered OEM genuine component designed exclusively for the WG 65 series transmission. This hardened steel washer functions as a critical load-spreading interface between fasteners and housing surfaces, ensuring uniform clamping force during high-torque operations. Positioned internally within the gear train assembly, part number 0730.005.475 prevents galling and maintains axial alignment under extreme thermal and mechanical stress. Its exacting tolerances are essential for preserving the structural integrity of the TRANSMISSION HOUSING (4616101111) and adjacent subassemblies.
Symptoms of Failure
- Oil seepage at housing joints: A worn or deformed 0730.005.475 washer allows micro-movement, breaking the seal between the HOUSING (4616301304) and mating surfaces, leading to gradual fluid loss.
- Audible gear rattle during load shifts: Loss of washer thickness introduces axial play, causing gear teeth to clash under torque changes.
- Recurring fastener loosening: Compromised washer elasticity reduces clamping retention, requiring frequent retorquing of the HEXAGON SCREW (0636011118).
- Vibration-induced housing cracks: Uneven load distribution from a collapsed washer stresses the HOUSING (4616301309), accelerating fatigue fractures.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.005.475 |
| Inner Diameter | 14.2 mm |
| Outer Diameter | 28.0 mm |
| Thickness | 2.5 mm |
| Material | Case-hardened alloy steel (DIN 1.7131) |
| Surface Treatment | Zinc-nickel plating (ISO 4042) |
| Weight | 8.4 g |
| OEM Reference | ZF 0730.005.475 |
| Hardness | HRC 45-50 |
Compatibility
While primarily specified for the WG 65 series, the 0730.005.475 washer is dimensionally identical to washers used in ZF WG180, WG200, and WG250 transmissions. It also appears in certain WG120 auxiliary drive assemblies. Always cross-reference with your transmission’s parts manual, as variations in housing thickness—such as those between the HOUSING (4616301304) and HOUSING (4616301309)—may require specific washer stacks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101111 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011118 | HEXAGON SCREW | Fastener for housing-to-bell housing joint |
| 4616301304 | HOUSING | Intermediate housing for clutch pack |
| 4616301309 | HOUSING | Rear housing for output shaft support |
| 0636011038 | HEXAGON SCREW | M10 fastener for oil pump cover |
| 0636016015 | HEXAGON SCREW | M12 fastener for flange mounting |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing centering |
| 0634313118 | O-RING | Static seal between housing sections |
| 0636304019 | SCREW PLUG | Drain/fill port closure |
| 0634801152 | SEALING RING | Copper gasket for plug sealing |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
