Overview
The ZF 0630.004.057 SHIM RING is a precision-engineered adjustment component designed for the WG 100 and WG 201 transmission series. 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 tolerances, the shim ring prevents metal-to-metal contact and reduces internal stress on the gear train. The SKU 0630.004.057 is manufactured to ZF’s original specifications, guaranteeing a factory-fit installation that preserves the transmission’s operational integrity. This shim ring works in conjunction with the 4644101160: TRANSMISSION HOUSING and the 4644301323: TRANSMISSION HOUSING to establish the correct gear mesh geometry.
Symptoms of Failure
- Abnormal gear whine or grinding noise – A worn or collapsed shim ring allows excessive gear lash, producing a distinct metallic whine during acceleration or deceleration.
- Intermittent gear slipping under load – Incorrect axial clearance from a degraded shim ring can cause the clutch packs to lose clamping force, leading to momentary power loss.
- Internal oil leaks at housing seams – When the shim ring fails, it can distort the housing alignment, causing fluid to seep past the 4644301189: THREADED BUSH and 4475280043: SCREW PLUG interfaces.
- Premature bearing wear – A misaligned shim ring forces bearings to operate outside their designed load path, accelerating fatigue and generating metallic debris in the oil.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0630.004.057 |
| Material | Case-hardened steel (DIN 1.7131) |
| Inner Diameter | 68.0 mm |
| Outer Diameter | 82.5 mm |
| Thickness | 1.50 mm (selective fit) |
| Weight | 0.028 kg |
| OEM Reference | ZF 0630.004.057 |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
Compatibility
This shim ring is engineered for the ZF WG 100 and WG 201 transmission families. It is directly compatible with models including the WG180, WG200, WG210, and WG220 series. The part also applies to the WG101 and WG202 variants where axial clearance adjustments are required. Always verify the selective thickness range during installation, as multiple shim sizes are used to achieve the final end-play specification. For complete assembly, pair this ring with the 0634306198: O-RING for sealing and the 0730365067: TYPE PLATE for identification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG201 |
| 4644301189 | THREADED BUSH | Oil passage alignment and sealing |
| 4475280043 | SCREW PLUG | Seals hydraulic test ports |
| 0634306198 | O-RING | Fluid seal between housing sections |
| 0730365067 | TYPE PLATE | Transmission identification tag |
| 4644301161 | COVER PLATE | Access cover for valve body |
| 0636100621 | HEXAGON SCREW | Fastener for housing joints |
| 0631610020 | SET SCREW | Adjustable stop for shift forks |
| 0501218540 | BREATHER | Pressure equalization vent |
