Overview
The ZF 0730.007.955 SHIM is a precision-engineered OEM genuine component designed to establish the correct axial clearance and preload within ZF heavy-duty transmission assemblies. This thin, hardened steel spacer sits between gear faces and bearing races, compensating for manufacturing tolerances to ensure optimal gear mesh and bearing support. The SKU 0730.007.955 is critical for maintaining the structural integrity of the differential housing and final drive sections. When installed alongside a 2095109016: DIFFERENTIAL or a 2095209037: DIFFERENTIAL, this shim prevents lateral movement that would otherwise cause premature wear on adjacent components.
Symptoms of Failure
- Excessive differential backlash and clunking noises: A worn or collapsed shim allows the 0750117075: TAPER ROLLER BEARING to lose preload, creating a distinct “clunk” when shifting from forward to reverse under load.
- Oil contamination from metal debris: As the shim surface degrades, fine metallic particles enter the transmission fluid, often visible during routine oil changes or when inspecting the magnetic drain plug.
- Uneven tire wear and driveline vibration: Incorrect shim thickness alters the pinion depth, causing the 2095309059: DIFF.HOUSING to misalign, which translates into a low-frequency vibration at highway speeds.
- Intermittent gear slipping under heavy torque: When the shim stack loses its dimensional integrity, the differential carrier shifts, leading to momentary loss of power transfer during excavation or grading operations.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 0730.007.955 |
| Material | Hardened spring steel (C67S / 1.1248 equivalent) |
| Inner Diameter (ID) | 72.0 mm |
| Outer Diameter (OD) | 95.0 mm |
| Thickness | 0.50 mm (selective fit tolerance ±0.02 mm) |
| Weight | 0.045 kg |
| Surface Finish | Ground, deburred edges |
| Hardness | HRC 45-50 |
Compatibility
This shim is engineered for ZF power shift transmissions commonly found in construction machinery. It is a direct fit for the following transmission models: WG180, WG200, WG210, 4WG180, 4WG200, 4WG210, and 6WG200. The 0730.007.955 is also used in certain final drive assemblies for wheel loaders and graders where precise axial shimming of the differential carrier is required. Always verify the existing shim stack thickness before replacement, as multiple shims may be stacked to achieve the specified preload.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109016 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 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 gear faces |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to wheel hub |
| 5838300811 | THRUST WASHER | Controls side gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear within differential carrier |
