Overview
The ZF 0630.000.229 SHIM RING is a precision-engineered spacer component designed for the WG 201 Series transmission family. This OEM genuine part plays a critical role in establishing the correct axial clearance between rotating assemblies and stationary housing components within the gear train. By maintaining precise end-play tolerances, the shim ring prevents metal-to-metal contact that would otherwise cause premature wear or catastrophic failure. The SKU 0630.000.229 is manufactured to ZF’s exacting specifications, ensuring a perfect fit when installed alongside companion components such as the 4644101160: TRANSMISSION HOUSING or the 4644301323: TRANSMISSION HOUSING.
Symptoms of Failure
When the 0630.000.229 shim ring deteriorates or is incorrectly installed, several distinct failure modes emerge. First, excessive axial play in the output shaft becomes noticeable during load changes, often felt as a clunking sensation during acceleration or deceleration. Second, low-frequency gear whine or rumbling noise from the transmission housing indicates that bearing preload has been lost. Third, intermittent gear engagement difficulty or hard shifting occurs because the internal clearances have drifted outside specification. Fourth, metal particles in the transmission fluid signal that the shim ring has worn through its surface coating, allowing steel-on-steel contact that generates debris.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0630.000.229 |
| OEM Reference | ZF 0630.000.229 |
| Material | Case-hardened steel (DIN 1.7131) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 52.0 mm |
| Thickness | 1.50 mm |
| Weight | 0.018 kg |
| Surface Finish | Ground, 0.8 µm Ra |
| Hardness | 58-62 HRC |
Compatibility
This shim ring is primarily specified for the ZF WG 201 Series, but its dimensional profile also suits several related heavy-duty transmissions. Verified compatible models include the WG180, WG200, WG201, and WG202 series. It is frequently used in combination with the 4644301189: THREADED BUSH to secure the ring in position, and the 4475280043: SCREW PLUG seals the access port after installation. Always verify the existing stack height before ordering, as multiple shim thicknesses may be required to achieve the specified end-play of 0.05-0.15 mm.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301323 | TRANSMISSION HOUSING | Alternative housing variant for WG series |
| 4644301189 | THREADED BUSH | Locating bush for shim ring retention |
| 4475280043 | SCREW PLUG | Seals the shim ring adjustment access |
| 0634306198 | O-RING | Provides fluid seal at housing joint |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 4644301161 | COVER PLATE | Protective cover over shim access port |
| 0636100621 | HEXAGON SCREW | Fastener for cover plate attachment |
| 0631610020 | SET SCREW | Locks threaded bush in position |
| 0501218540 | BREATHER | Vents pressure from transmission housing |
