Overview
The ZF 0630.000.072 SHIM RING is a precision-engineered spacer component designed to establish critical axial clearances within the planetary gearset of heavy-duty ZF transmissions. Positioned between the output shaft assembly and the transmission housing, this thin but durable steel ring compensates for manufacturing tolerances, ensuring that gear engagement and bearing preload remain within factory specifications. The SKU 0630.000.072 is an OEM genuine part, guaranteeing exact material hardness and dimensional accuracy for long service life. Without this shim, the entire rotating assembly can shift out of alignment, leading to premature wear on adjacent components such as the 4616105402: OUTPUT and the 4005303005: OUTPUT FLANGE.
Symptoms of Failure
When the ZF 0630.000.072 shim ring wears or becomes damaged, operators will notice distinct performance issues. Look for these specific failure symptoms:
- Excessive axial play in the output shaft – A worn shim ring allows the output shaft to move back and forth, causing a noticeable clunk during acceleration or deceleration.
- Low-frequency gear whine or rumbling noise – Incorrect clearance from a collapsed shim ring alters gear mesh patterns, producing a constant droning sound from the transmission.
- Oil seepage at the output flange seal – Axial movement of the shaft can distort the seal lip, leading to slow oil leaks around the 0636011038: HEXAGON SCREW mounting points.
- Intermittent gear slipping under load – As the planetary carrier loses its proper shim support, clutch packs may not fully engage, resulting in momentary power loss.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0630.000.072 |
| Inner Diameter | 72.0 mm |
| Outer Diameter | 90.0 mm |
| Thickness | 0.50 mm (selective fit) |
| Material | Case-hardened spring steel (DIN 1.3505) |
| Weight | 18 grams |
| OEM Reference | ZF 0630.000.072 |
| Surface Finish | Ground, deburred edges |
Compatibility
This shim ring is an integral component in the ZF WG series of powershift transmissions. It is directly compatible with the following models:
- ZF WG 180 Series – All variants including WG180, WG180A, WG180B
- ZF WG 200 Series – WG200, WG200A, WG200B
- ZF WG 201 Series – WG201, WG201A
- ZF WG 65 Series – WG65, WG65A (early production)
During rebuilds, always verify the shim thickness against the 4616101119: TRANSMISSION HOUSING face to ensure correct end-play. The shim ring works in concert with the output shaft and flange to maintain proper gear alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105402 | OUTPUT | Transfers torque from planetary gearset to output flange |
| 4005303005 | OUTPUT FLANGE | Connects transmission output to driveshaft |
| 4616101119 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011038 | HEXAGON SCREW | Secures output flange to shaft |
| 0636011118 | HEXAGON SCREW | Housing bolt, M10 x 35mm |
| 0636016015 | HEXAGON SCREW | Flange bolt, M12 x 40mm |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0634313118 | O-RING | Seals oil passage between housing sections |
| 0636304019 | SCREW PLUG | Closes oil drain port in housing |
| 0634801152 | SEALING RING | Static seal for output flange cover |
