Overview
The ZF 0630.000.253 SHIM RING is a precision-engineered spacer component designed for the WG 65 Series transmission. This OEM genuine part plays a critical role in establishing the correct axial clearance between gear sets and the transmission housing. By maintaining precise end-play tolerances, the shim ring ensures optimal load distribution and prevents unwanted gear contact. The SKU 0630.000.253 is factory-matched to ZF’s exacting specifications, making it essential for any rebuild or overhaul of the WG65 gearbox. When installed alongside the 4616101059: TRANSMISSION HOUSING, this shim ring guarantees that rotating assemblies remain properly aligned under heavy torque loads.
Symptoms of Failure
When the 0630.000.253 SHIM RING wears or becomes compressed beyond specification, several distinct failure modes emerge. Watch for these specific symptoms to identify a failing shim ring:
- Excessive axial gear play – A worn shim ring allows the main shaft to shift, producing a noticeable clunking sound during acceleration or deceleration.
- Oil leaks near the housing joint – Incorrect clearance can distort the 0636011038: HEXAGON SCREW torque pattern, leading to seal gaps and fluid seepage.
- Gear slipping under load – When end-play exceeds 0.15 mm, gear teeth lose full engagement, causing intermittent power loss in higher ranges.
- Abnormal vibration at cruising speed – A collapsed shim ring creates uneven bearing preload, transmitting vibration through the driveline at 40-60 km/h.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0630.000.253 |
| Material | Case-hardened steel (DIN 1.3505) |
| Inner Diameter | 63.0 mm |
| Outer Diameter | 78.0 mm |
| Thickness | 0.25 mm (selective fit) |
| Weight | 12 grams |
| OEM Reference | ZF 0630.000.253 |
| Hardness | HRC 58-62 |
Compatibility
This shim ring is specifically engineered for the WG 65 Series transmission family. Based on its dimensional profile and material grade, it is also compatible with the following ZF models that share the same planetary gearset architecture: WG180, WG200, and WG250. For proper installation, always pair this shim ring with the correct 0636011118: HEXAGON SCREW and 0636016015: HEXAGON SCREW to achieve the factory torque specification of 45 Nm. Verify housing flatness using the 0631306085: CYLINDRICAL PIN alignment tool before final assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Fastener for housing-to-bellhousing joint |
| 0636011118 | HEXAGON SCREW | M10 bolt for bearing retainer plate |
| 0636016015 | HEXAGON SCREW | M12 bolt for output flange |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing centering |
| 0634313118 | O-RING | Static seal for oil pump cover |
| 0636304019 | SCREW PLUG | M18 drain plug with magnet |
| 0634801152 | SEALING RING | Copper crush washer for drain plug |
| 0732611049 | FILTER INSERT | High-pressure oil filter element |
| 0634303718 | O-RING | Seal for filter housing cap |
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