Overview
The ZF 0630.000.040 SHIM RING is a precision-engineered adjustment component designed specifically for the WG 65 Series transmission family. This OEM genuine part functions as a critical spacer within the planetary gearset assembly, controlling axial clearance and preload between rotating elements. By maintaining exacting tolerances, the shim ring ensures proper gear engagement and load distribution across the transmission’s torque path. The SKU 0630.000.040 is manufactured to ZF’s original specifications, guaranteeing dimensional accuracy and material hardness for long service life. When installed correctly alongside the 4616101059: TRANSMISSION HOUSING, this shim ring prevents metal-to-metal contact and compensates for thermal expansion during operation.
Symptoms of Failure
- Audible gear whine or grinding noise during acceleration — Worn shim rings allow excessive axial play, causing gear teeth to misalign under load. This symptom often intensifies in higher gears and may be mistaken for bearing failure.
- Intermittent gear slipping under heavy torque — As the shim ring loses its calibrated thickness, clutch pack clearance increases, leading to delayed engagement or momentary power loss when climbing grades or hauling heavy loads.
- Metallic debris in transmission fluid — A fatigued shim ring can fracture, releasing small steel particles into the oil circuit. This contamination accelerates wear on the 0732611049: FILTER INSERT and valve body components.
- Oil seepage at housing mating surfaces — Incorrect shim ring thickness alters the clamping force on the 0634313118: O-RING, creating pathways for fluid migration past seals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0630.000.040 |
| Inner Diameter | 40.0 mm |
| Outer Diameter | 63.0 mm |
| Thickness | 0.40 mm (selective fit) |
| Material | Case-hardened steel (DIN 1.7131) |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
| Weight | 8.5 grams |
| OEM Reference | ZF 0630.000.040 |
| Hardness | 58-62 HRC |
Compatibility
This shim ring is engineered for the ZF WG 65 Series, but its dimensional profile also suits several other ZF off-highway transmissions. Verified compatible models include the WG65, WG80, WG120, WG180, and WG200 series. It is commonly used in construction equipment, agricultural tractors, and material handlers. Always verify the required shim thickness using ZF’s selective fit procedure. For proper installation, secure the assembly using 0636011038: HEXAGON SCREW and 0636011118: HEXAGON SCREW fasteners, torqued to factory specifications. The 0636016015: HEXAGON SCREW may also be required for auxiliary housing attachments.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gearset and shafts |
| 0636011038 | HEXAGON SCREW | Fastener for housing-to-bellhousing joint |
| 0636011118 | HEXAGON SCREW | Fastener for planetary carrier retention |
| 0636016015 | HEXAGON SCREW | Fastener for oil pump mounting |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0634313118 | O-RING | Static seal between housing and cover |
| 0636304019 | SCREW PLUG | Oil drain port closure |
| 0634801152 | SEALING RING | Dynamic seal for output shaft |
| 0732611049 | FILTER INSERT | Hydraulic oil filtration element |
| 0634303718 | O-RING | Seal for filter housing cap |
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