Overview
The ZF 0730.112.813 SHIM is a precision-engineered OEM genuine spacer component designed for critical axial clearance adjustment within heavy-duty ZF construction machinery transmissions. This shim sits between the differential housing and bearing assemblies, ensuring correct preload and alignment of rotating gear sets. The SKU 0730.112.813 is specifically manufactured to maintain exacting tolerances that prevent gear train misalignment under extreme load conditions. By controlling end-play in the differential section, this shim directly supports the longevity of adjacent components such as the 2095109020 DIFFERENTIAL and the 0750117075 TAPER ROLLER BEARING, both of which rely on precise shimming for optimal performance.
Symptoms of Failure
- Excessive differential gear backlash – When the 0730.112.813 shim compresses or wears, you will notice a clunking noise during direction changes, often described as “ZF transmission differential slack” in service manuals.
- Premature taper roller bearing failure – A worn shim alters bearing preload, leading to overheating and spalling. This is commonly searched as “taper roller bearing noise after shim wear” in construction equipment forums.
- Oil contamination from metal debris – As the shim degrades, microscopic steel particles enter the transmission fluid, causing “shim debris in ZF transmission oil” as a diagnostic clue during filter inspections.
- Intermittent gear slipping under load – Incorrect shim thickness allows the 2095209037 DIFFERENTIAL to shift axially, resulting in momentary power loss during excavation or grading operations.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.112.813 |
| Material | Case-hardened steel (DIN 1.3505 equivalent) |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 42.0 mm |
| Thickness | 1.25 mm (selective fit tolerance ±0.02 mm) |
| Weight | 22 grams |
| OEM Reference | ZF 0730.112.813 |
| Surface Finish | Ground, Ra 0.4 µm |
Compatibility
This shim is integral to ZF WG series powershift transmissions commonly found in wheel loaders, telehandlers, and graders. Based on its dimensional profile and application, the 0730.112.813 is compatible with the following ZF transmission models: WG180, WG200, WG211, and WG310. It is also used in certain ZF 4WG-200 and ZF 6WG-250 variants where differential preload adjustment is required. When replacing this shim, always inspect the mating 2095309059 DIFF.HOUSING for wear patterns that could indicate deeper differential issues.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109020 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation under load |
| 2095209037 | DIFFERENTIAL | Alternate differential assembly variant |
| 2095309059 | DIFF.HOUSING | Encloses differential gear set |
| 0631329086 | SPRING PIN | Secures shim and gear alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction on gears |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to wheel hubs |
| 5838300811 | THRUST WASHER | Controls axial play in gear stack |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential rotation |
