Overview
The ZF 0730.301.963 SHIM is a precision-engineered OEM genuine spacer used to establish critical axial clearances within ZF heavy-duty transmissions. This shim sits between the differential housing and bearing races, ensuring correct preload on the 0750117075: TAPER ROLLER BEARING assembly. Without this exact SKU 0730.301.963, gear train alignment degrades rapidly. It is a non-negotiable component for maintaining backlash tolerances in construction machinery drivelines.
Symptoms of Failure
- Excessive differential noise during turns: A worn or collapsed shim allows the 2095109020: DIFFERENTIAL to shift axially, producing a distinct grinding or howling sound when the machine maneuvers under load.
- Premature taper roller bearing failure: Incorrect shim thickness causes the 0750117075: TAPER ROLLER BEARING to operate with excessive end-play, leading to brinelling and spalling within 500 operating hours.
- Oil seepage at axle housing seals: A degraded shim alters the position of the 2095309059: DIFF.HOUSING, which misaligns seal contact paths and causes chronic lubricant leakage.
- Intermittent gear slipping under load: When the shim loses its original thickness, the 2095209037: DIFFERENTIAL assembly shifts, reducing tooth contact area and causing momentary power loss.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 0730.301.963 |
| Material | Case-hardened steel (DIN 1.7131) |
| Thickness | 1.50 mm ±0.02 mm |
| Outer Diameter | 82.0 mm |
| Inner Diameter | 62.5 mm |
| Weight | 0.042 kg |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
Compatibility
This shim is engineered for ZF WG180, WG200, and WG250 series transmissions commonly found in wheel loaders, graders, and telehandlers. It directly interfaces with the 2095309059: DIFF.HOUSING and the 2095209037: DIFFERENTIAL assembly. Always verify the shim stack height when replacing the 0750117075: TAPER ROLLER BEARING to maintain factory preload specifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109020 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation under load |
| 2095209037 | DIFFERENTIAL | Secondary differential unit for multi-axle systems |
| 2095309059 | DIFF.HOUSING | Encloses and aligns differential gears |
| 0631329086 | SPRING PIN | Secures shim and bearing race position |
| 0730300820 | THRUST WASHER | Controls axial movement of gear sets |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to final drive |
| 5838300811 | THRUST WASHER | Reduces friction on planetary gears |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Provides speed differentiation between wheels |
