Overview
The ZF 0730.103.473 SHIM is a precision-engineered OEM genuine component designed to establish critical axial clearances within heavy-duty ZF transmissions used in construction machinery. Positioned between the differential housing and the bearing seat, this shim compensates for manufacturing tolerances and ensures correct preload on the gear train. The SKU 0730.103.473 is a factory-specified part that directly controls the end-play of the differential assembly, preventing unwanted movement that can lead to premature wear. By maintaining exact spacing, this shim protects the 2093109029 DIFFERENTIAL and its mating gears from excessive stress during high-torque operations.
Symptoms of Failure
- Transmission whining noise under load: When the 0730.103.473 shim compresses or wears, gear mesh patterns shift, producing a high-pitched whine during acceleration. This is a common long-tail search query for “ZF transmission whining noise fix.”
- Oil seepage at differential housing gasket: A worn shim allows the housing to shift, breaking the seal and causing “ZF differential oil leak” conditions. You may notice drips near the axle connection points.
- Intermittent gear slipping in low range: Excessive axial play from a collapsed shim causes the 0750117075 TAPER ROLLER BEARING to lose preload, leading to “ZF transmission gear slipping in reverse” complaints.
- Vibration through the driveline: As the shim degrades, the differential carrier wobbles, transmitting vibration into the chassis—often searched as “construction machinery driveline vibration causes.”
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.103.473 |
| Material | Case-hardened steel (DIN 1.3505 equivalent) |
| Thickness | 0.50 mm (nominal) |
| Outer Diameter | 72.0 mm |
| Inner Diameter | 42.0 mm |
| Weight | 18 grams |
| OEM Reference | ZF 0730.103.473 |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
Compatibility
This shim is integral to ZF heavy-duty powershift transmissions commonly deployed in wheel loaders, dozers, and graders. It is a direct fit for the ZF WG180, WG200, and WG210 series. The 0730.103.473 also appears in the ZF 4WG-200 and 6WG-200 variants where it works alongside the 2093209094 DIFFERENTIAL and the 2093309078 DIFF.HOUSING to maintain gear alignment. Always verify your transmission model tag before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109029 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209094 | DIFFERENTIAL | Secondary differential unit for multi-axle drive |
| 2093309078 | DIFF.HOUSING | Encloses and supports differential gears |
| 0631100223 | SPRING PIN | Locks differential shaft in position |
| 0730300820 | THRUST WASHER | Reduces axial friction on gear faces |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to final drive |
| 5838300811 | THRUST WASHER | Controls side gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Engages with pinion for speed differentiation |
Frequently Asked Questions
Q: How do I know if the 0730.103.473 shim needs replacement?
A: Measure the differential end-play with a dial indicator. If clearance exceeds 0.15 mm, the shim has likely worn beyond tolerance. Also inspect for a polished or stepped surface on the shim face.
Q: Can I reuse this shim during a rebuild?
A: No. The 0730.103.473 is a single-use crush-type shim. Reusing it will not restore proper preload and will accelerate bearing failure in the 0750117075 TAPER ROLLER BEARING.
Q: Is this shim specific to construction machinery only?
A: While primarily cataloged under Construction Machinery, the 0730.103.473 also fits ZF marine and industrial transmissions that share the WG-series differential architecture. Always cross-reference your housing part number.
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