Overview
The ZF 0630.004.058 SHIM RING is a precision-engineered spacer component designed for the WG 100 and WG 201 transmission series. This OEM genuine part sits between the transmission housing and the planetary gear assembly, establishing the critical axial clearance necessary for proper gear mesh and bearing preload. Without this shim ring, the internal components would experience excessive end-play, leading to accelerated wear. The SKU 0630.004.058 is manufactured to exact ZF tolerances, ensuring that the gear train remains correctly aligned under load. This part is often replaced during a full transmission overhaul when the original shim has been compressed or corroded over time.
Symptoms of Failure
- Transmission oil leaks at the housing joint: When the 0630.004.058 shim ring wears or deforms, it can allow the 4644101160: TRANSMISSION HOUSING to shift slightly, breaking the seal and causing fluid seepage.
- Gear slipping under load: A worn shim ring reduces the clamping force on the planetary carrier, resulting in intermittent power loss during acceleration.
- Abnormal whining or grinding noises: Incorrect axial clearance from a degraded shim ring allows gear teeth to contact improperly, producing a distinct metallic sound.
- Delayed engagement when shifting: The loss of precise spacing can cause the clutch packs to engage late, particularly in the WG201 series.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0630.004.058 |
| Inner Diameter | 58 mm (estimated) |
| Outer Diameter | 72 mm (estimated) |
| Thickness | 0.5 mm (estimated) |
| Material | Hardened spring steel |
| Weight | 12 g (estimated) |
| OEM Reference | ZF 0630.004.058 |
Compatibility
This shim ring is primarily compatible with the ZF WG 100 and WG 201 transmission families. It is also used in the WG180, WG200, and WG210 variants where the same planetary carrier assembly is employed. The part interfaces directly with the 4644301323: TRANSMISSION HOUSING and the 4644301189: THREADED BUSH that secures the output shaft. For proper installation, the 4475280043: SCREW PLUG must be torqued to specification to prevent the shim from shifting during operation. Always verify the thickness of your existing shim before ordering, as multiple thickness variants exist within the 0630 series.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG201 |
| 4644301189 | THREADED BUSH | Secures output shaft bearing |
| 4475280043 | SCREW PLUG | Seals hydraulic passages |
| 0634306198 | O-RING | Seals housing joint |
| 0730365067 | TYPE PLATE | Identification plate for transmission |
| 4644301161 | COVER PLATE | Protects internal components |
| 0636100621 | HEXAGON SCREW | Fastens housing sections |
| 0631610020 | SET SCREW | Locks adjustment points |
| 0501218540 | BREATHER | Vents pressure from housing |
