Overview
The ZF 0630.004.071 SHIM RING is a precision-engineered adjustment component designed for the WG 150 Series transmission. This OEM genuine part serves as a critical spacer within the planetary gearset assembly, ensuring correct axial clearance and load distribution between rotating elements. By maintaining precise end-play tolerances, the shim ring prevents gear misalignment and reduces internal friction. The SKU 0630.004.071 is installed directly against the 4642101108: TRANSMISSION HOUSING and works in conjunction with the 4642301208: TRANSMISSION HOUSING to secure the output shaft assembly. Without this shim ring, the transmission cannot achieve proper gear mesh depth, leading to premature wear of internal components.
Symptoms of Failure
- Oil leaks from the output shaft seal area — A worn or collapsed shim ring allows excessive axial movement, breaking the seal between the shaft and the 0630361029: SEALING CAP, resulting in fluid seepage.
- Gear slipping under load — When the shim ring loses its original thickness, planetary gear clearance increases, causing intermittent power loss during acceleration or hill climbing.
- Metallic grinding noise during shifting — Insufficient shim support allows gear teeth to contact the housing walls, producing a distinct grinding sound, especially in lower gears.
- Vibration at highway speeds — Worn shim rings permit radial play in the gearset, creating driveline shudder that intensifies above 45 mph.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0630.004.071 |
| Material | Case-hardened steel (DIN 1.3505 equivalent) |
| Outer Diameter | 142.0 mm |
| Inner Diameter | 128.5 mm |
| Thickness | 1.50 mm (selective fit range: 1.45–1.55 mm) |
| Weight | 0.045 kg |
| OEM Reference | ZF 0630.004.071 |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
Compatibility
This shim ring is specifically engineered for the ZF WG 150 Series, but it also fits the WG 180 and WG 200 models when used in the planetary carrier assembly. The part is interchangeable with the shim found in WG 120 and WG 140 variants that share the same output shaft diameter. Always verify clearance after installation using the 0730365125: TYPE PLATE to confirm the correct transmission variant. For secure mounting, pair this shim with the 0631311009: GROOVED STUD to prevent rotation during operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Main structural casing for gearset |
| 4642301208 | TRANSMISSION HOUSING | Secondary housing for output section |
| 0730365125 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Alignment pin for shim ring positioning |
| 4642301168 | SCREEN SHEET | Oil filtration mesh for sump |
| 4642301169 | SCREEN SHEET | Fine filtration screen for valve body |
| 0636100621 | HEXAGON SCREW | Fastener for housing cover |
| 0630361029 | SEALING CAP | Output shaft oil seal cover |
| 4642306254 | ADAPTER | Interface for PTO mounting |
| 0634303340 | O-RING | Hydraulic seal between housings |
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