Overview
The ZF 0630.004.101 SHIM RING is a precision-engineered adjustment component designed specifically for the WG 65 series transmission. This OEM genuine part functions as a critical spacer within the planetary gearset assembly, controlling axial clearance and preload between rotating elements. By maintaining exact tolerances, the shim ring ensures optimal gear mesh alignment and load distribution across the drivetrain. The SKU 0630.004.101 is manufactured to ZF’s original specifications, guaranteeing a direct fit without modification. When installed alongside the 4108101112: HOUSING and 4108201177: HOUSING, this shim ring prevents metal-to-metal contact and extends transmission service life.
Symptoms of Failure
- Excessive gear backlash or clunking during shifting: A worn or collapsed shim ring allows axial play in the planetary assembly, producing audible thuds when engaging forward or reverse gears.
- Premature bearing wear and whining noise: Incorrect clearance from a degraded shim ring forces bearings to operate outside their designed load zone, generating a high-pitched whine under load.
- Intermittent oil pressure fluctuations: As the shim ring loses thickness, internal leakage paths open between clutch packs, causing erratic pressure readings on the transmission gauge.
- Gradual power loss under heavy torque: Misaligned gear sets from shim ring failure reduce torque transfer efficiency, particularly noticeable during uphill climbs or loaded starts.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0630.004.101 |
| Inner Diameter | 68.0 mm |
| Outer Diameter | 82.0 mm |
| Thickness | 1.50 mm |
| Material | Case-hardened steel (DIN 1.7131) |
| Weight | 0.045 kg |
| OEM Reference | ZF 0630.004.101 |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
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, WG100, WG120, WG150, WG180, and WG200 series. It is commonly used in construction equipment, agricultural tractors, and material handlers where the 4108301304: BEARING COVER and 0636302056: SCREW PLUG are also replaced during overhaul. Always verify stack height requirements using the service manual for your specific transmission variant.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101112 | HOUSING | Encloses planetary gearset and supports shafts |
| 4108201177 | HOUSING | Rear housing for clutch assembly |
| 0636302056 | SCREW PLUG | Seals oil passages in valve body |
| 4108301304 | BEARING COVER | Retains output shaft bearing |
| 4108306173 | GASKET | Prevents oil leaks between mating surfaces |
| 0750110040 | SHAFT SEAL | Dynamic seal for rotating shafts |
| 4108102042 | INPUT | Input shaft assembly for torque converter |
| 4108302099 | PLANET CARRIER | Holds planetary gears in alignment |
| 4108302007 | BEARINGSHEET | Thrust washer for axial load management |
| 0635332196 | BALL BEARING | Supports high-speed rotating elements |
