Overview
The ZF 0730.108.428 WASHER is a precision-engineered OEM genuine thrust washer designed to maintain critical axial clearances within the transmission’s rotating assembly. Positioned between the main shaft and the shift system components, this hardened steel washer prevents metal-to-metal contact and ensures consistent load distribution during high-torque operations. As a factory-specified part, the SKU 0730.108.428 directly replaces worn washers to restore factory tolerances in construction machinery transmissions. When paired with a 2094104412 MAIN SHAFT or a 2094106010 SHIFT SYSTEM, this washer guarantees reliable power transfer under heavy loads.
Symptoms of Failure
- Transmission oil leaks near the main shaft housing: A worn 0730.108.428 washer allows excessive axial play, breaking the seal between rotating and stationary components. Search for “ZF transmission oil leak main shaft washer” to identify this issue.
- Gear engagement hesitation or grinding: When the washer thickness degrades, the 2094206001 GEARSHIFT SHAFT loses its precise alignment, causing delayed or rough shifts. This is often reported as “ZF WG transmission hard shifting.”
- Metallic rattling from the transmission bell housing: A collapsed washer creates loose clearance between the 2094304054 MAIN SHAFT and adjacent gears, producing a distinct rattle at idle or low RPM.
- Progressive loss of power to the wheels: As the washer flattens, axial thrust loads transfer improperly, leading to clutch pack slippage and reduced torque delivery—a classic “ZF transmission slipping under load” symptom.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.108.428 |
| Material | Hardened Carbon Steel (DIN 1.0503) |
| Outer Diameter | 42.0 mm |
| Inner Diameter | 28.5 mm |
| Thickness | 2.5 mm |
| Weight | 12 g |
| OEM Reference | ZF 0730.108.428 |
| Surface Finish | Ground, phosphate-coated |
Compatibility
This washer is engineered for ZF WG-series powershift transmissions commonly used in construction machinery. It is a direct fit for the WG180, WG200, and WG210 models. The 0730.108.428 also appears in certain ZF 4WG-200 and ZF 5WG-180 variants. Always verify clearance when replacing alongside a 2094304054 MAIN SHAFT or 2094106010 SHIFT SYSTEM to maintain proper stack height.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from engine to gear cluster |
| 2094304054 | MAIN SHAFT | Secondary shaft for countershaft drive |
| 2094106010 | SHIFT SYSTEM | Hydraulic actuator for gear selection |
| 2094206001 | GEARSHIFT SHAFT | Mechanical link between shift fork and drum |
| 2094306053 | GEARSHIFT SHAFT | Alternate shaft for high-range gears |
| 0630513070 | SNAP RING | Retains shaft bearings in housing |
| 2094306019 | WASHER | Thrust washer for countershaft support |
| 0732040444 | COMPRESSION SPRING | Provides preload on shift rail detents |
| 0732040728 | COMPRESSION SPRING | Higher-rate spring for clutch pack return |
| 2093206001 | BUSH | Plain bearing for gear idler shaft |
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