Overview
The ZF 0630.004.118 SHIM RING is a precision-engineered spacer component designed for the WG 65 Series transmission. This OEM genuine part functions as a critical axial adjustment element, controlling end-play and preload within the gear train assembly. Installed directly between the TRANSMISSION HOUSING and bearing races, the shim ring ensures correct gear mesh alignment and prevents excessive shaft movement under load. The SKU 0630.004.118 is manufactured to exact ZF tolerances, guaranteeing a perfect fit for maintaining optimal torque transfer and reducing internal vibration during high-stress operations.
Symptoms of Failure
- Audible gear whine or clunking: A worn or collapsed shim ring allows axial play, causing gear teeth to misalign and produce metallic noises during acceleration or deceleration.
- Erratic shift quality: When the 0630.004.118 loses its calibrated thickness, internal clearances increase, leading to delayed or harsh gear engagement in the WG65 transmission.
- Oil seepage near the housing joint: Excessive shaft movement from a degraded shim ring can distort the HEXAGON SCREW sealing surface, allowing transmission fluid to weep past the gasket.
- Premature bearing failure: Without proper shim support, bearings experience uneven loading, generating metallic debris in the oil pan and reducing overall transmission life.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0630.004.118 |
| Material | Case-hardened steel (DIN 1.7131) |
| Outer Diameter | 118.0 mm |
| Inner Diameter | 90.0 mm |
| Thickness | 1.50 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0630.004.118 |
| Surface Finish | Ground, deburred edges |
Compatibility
This shim ring is specifically engineered for the ZF WG 65 Series transmission family. Based on its dimensional profile and application in planetary gear sets, the 0630.004.118 is compatible with the following ZF models: WG65, WG80, WG100, WG120, WG150, WG180, and WG200. It is also used in certain off-highway and industrial driveline variants where axial clearance adjustment is required. Always verify the existing shim stack thickness before replacement. For complete assembly, pair this part with the HEXAGON SCREW and HEXAGON SCREW to secure the housing cover.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Fastener for housing cover attachment |
| 0636011118 | HEXAGON SCREW | High-tensile bolt for bearing retention |
| 0636016015 | HEXAGON SCREW | Flanged screw for oil pan mounting |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 0634313118 | O-RING | Static seal between housing sections |
| 0636304019 | SCREW PLUG | Magnetic drain plug for oil sump |
| 0634801152 | SEALING RING | Copper washer for plug sealing |
| 0732611049 | FILTER INSERT | Hydraulic oil filtration element |
| 0634303718 | O-RING | Internal pressure seal for valve body |
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