Overview
This ZF 0730.108.668 WASHER is an OEM genuine shim component engineered for precise axial clearance control within heavy-duty construction machinery transmissions. Positioned between the differential housing and the bearing race, this hardened steel washer maintains critical end-play tolerances that prevent gear train misalignment. The SKU 0730.108.668 is specifically designed to withstand high axial loads and thermal expansion cycles common in ZF power-shift transmissions. When installed alongside a 2093109002 DIFFERENTIAL, this washer ensures the differential assembly remains properly seated under torque.
Symptoms of Failure
- Transmission oil seepage at differential housing seal: A worn 0730.108.668 washer allows excessive axial play, distorting the seal lip and causing slow oil leaks around the housing joint.
- Intermittent gear slipping under load: When this thrust washer loses its calibrated thickness, the 0750117075 TAPER ROLLER BEARING loses preload, leading to momentary power loss during excavation or grading operations.
- Metallic grinding noise from differential area: Failed clearance allows the 2093209095 DIFFERENTIAL gears to contact the housing, producing a distinct high-pitched whine that worsens with load.
- Vibration through driveline during turns: Uneven washer wear creates lateral movement in the 2093309071 DIFF.HOUSING, causing driveline shudder when steering under load.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.108.668 |
| Material | Hardened carbon steel (HRC 58-62) |
| Outer Diameter | 68 mm |
| Inner Diameter | 52 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.108.668 |
| Surface Finish | Ground, phosphate coated |
Compatibility
This washer is a standard shim component in ZF WG180, WG200, and WG250 series transmissions used in wheel loaders, graders, and telehandlers. It also appears in select ZF Ecomat 4HP and 5HP automatic transmissions for off-highway vehicles. Always verify stack height requirements when replacing this part in conjunction with a 2097309085 DIFFERENTIAL AXLE assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads |
| 2093209095 | DIFFERENTIAL | Secondary differential gear set |
| 2093309071 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Retains shift fork position |
| 0730300820 | THRUST WASHER | Manages axial thrust loads |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to final drive |
| 5838300811 | THRUST WASHER | Secondary axial clearance control |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear mesh in differential |
Frequently Asked Questions
Q: Can I reuse the 0730.108.668 washer during a rebuild?
A: No. This is a single-use shim that compresses and work-hardens during service. Always replace with a new OEM washer to maintain factory clearance specifications.
Q: How do I measure the correct washer thickness for my ZF transmission?
A: Use a depth micrometer to measure the bearing bore depth and subtract the bearing width. The 0730.108.668 is available in 0.1 mm increments; select the thickness that achieves 0.05-0.15 mm end-play.
Q: Will this washer fit ZF WG180 transmissions with serial numbers after 2015?
A: Yes, the 0730.108.668 is dimensionally identical across all WG180, WG200, and WG250 series regardless of production year, though always cross-reference your housing part number.
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