Overview
The ZF 0730.006.672 WASHER is a precision-engineered OEM genuine shim component designed to maintain critical axial clearances within heavy-duty construction machinery transmissions. This hardened steel washer sits between the differential housing and the axle bevel gear assembly, ensuring correct preload on the bearing stack. The SKU 0730.006.672 is a factory-specified part that prevents gear train misalignment under extreme load conditions, directly supporting the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING in the final drive assembly.
Symptoms of Failure
- Oil leaks at the axle flange: A worn 0730.006.672 washer reduces sealing pressure, causing transmission fluid to weep past the differential housing gasket.
- Gear whine under load: When this washer loses its precise thickness, the 2093209023: DIFFERENTIAL gears develop excessive backlash, producing a high-pitched whine during acceleration.
- Intermittent gear slipping: Worn clearance allows the axle bevel gear to shift axially, causing momentary loss of torque transfer in construction machinery transmissions.
- Vibration in the driveline: Uneven washer wear leads to bearing preload loss, transmitting vibration through the 5838300626: DIFFERENTIAL HOUSING during operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.006.672 |
| Material | Hardened Carbon Steel (DIN 1.3505) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.0 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.006.672 |
| Surface Finish | Ground, phosphate coated |
Compatibility
This genuine ZF washer is engineered for the WG180, WG200, and WG250 series transmissions commonly found in wheel loaders, telehandlers, and excavators. It is a direct fit for final drive assemblies using the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING. Always verify axle housing compatibility with your specific ZF transmission model before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation under load |
| 2093209023 | DIFFERENTIAL | Secondary differential for planetary drives |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Secures washer alignment in housing |
| 5838300811 | THRUST WASHER | Reduces axial friction on bevel gear |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hub |
| 5838300633 | AXLE | Connects differential to final drive |
| 5838300753 | THRUST WASHER | Controls side gear clearance |
| 5838300818 | THRUST WASHER | Adjusts pinion gear preload |
Frequently Asked Questions
Q: Can I reuse the 0730.006.672 washer during a rebuild?
No. This is a single-use shim washer that deforms under torque. Always replace with a new OEM genuine part to maintain correct bearing preload.
Q: How do I know if this washer fits my ZF transmission?
Verify your transmission model (WG180, WG200, WG250) and measure the differential housing bore. The 0730.006.672 is designed for 68mm outer diameter applications.
Q: What tools are needed to install this washer?
Standard socket set, torque wrench, and a dial indicator to measure axial play. Always consult the ZF service manual for your specific transmission series.
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