Overview
The ZF 0730.108.670 WASHER is an OEM genuine precision shim engineered to maintain critical axial clearances within the differential assembly of heavy-duty construction machinery transmissions. Positioned between the differential housing and the rotating gear set, this washer absorbs thrust loads and ensures consistent gear mesh alignment. The SKU 0730.108.670 is a factory-specified component that directly supports the longevity of surrounding drivetrain elements, including the 2093109002: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING.
Symptoms of Failure
- Transmission oil leaks around the differential housing: A worn 0730.108.670 washer allows excessive end-play, breaking the seal between the differential carrier and housing, leading to visible fluid seepage.
- Gear slipping under heavy load: When the washer loses its precise thickness, the 2093209095: DIFFERENTIAL gears can shift out of alignment, causing intermittent power loss during excavation or grading operations.
- Metallic grinding noise from the axle area: Insufficient washer thickness permits metal-on-metal contact between the differential housing and rotating components, producing a distinct grinding sound during turns.
- Premature bearing failure: A collapsed washer transfers abnormal axial loads to the taper roller bearings, accelerating wear and requiring early replacement of the 2093309071: DIFF.HOUSING assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.108.670 |
| Material | Hardened carbon steel (C45E) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.5 mm |
| Thickness | 2.50 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.108.670 |
Compatibility
This washer is a standard shim in ZF’s heavy-duty transmission series, specifically designed for the WG180, WG200, and WG211 models used in wheel loaders, graders, and dump trucks. It also fits the differential assemblies of the 4WG-200 and 5WG-180 variants. Always verify the part number against your transmission’s parts manual to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209095 | DIFFERENTIAL | Secondary gear set for speed differentiation |
| 2093309071 | DIFF.HOUSING | Encloses and supports differential gears |
| 0631100223 | SPRING PIN | Secures gear alignment in differential |
| 0730300820 | THRUST WASHER | Reduces axial friction in gear sets |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to final drive |
| 5838300811 | THRUST WASHER | Controls end-play in planetary gears |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Engages with axle bevel gear for rotation |
Frequently Asked Questions
Q: Can I reuse the 0730.108.670 washer during a differential rebuild?
A: No. This washer is a single-use crush shim that deforms under torque to set preload. Reusing it will result in incorrect clearance and rapid bearing wear.
Q: How do I measure if my current washer is worn?
A: Measure the washer thickness with a micrometer. If it measures less than 2.45 mm at any point, replace it immediately to avoid damage to the 0750117075: TAPER ROLLER BEARING.
Q: Is this washer compatible with the ZF 4WG-200 transmission?
A: Yes, the 0730.108.670 is a standard shim in the 4WG-200 differential assembly. Always cross-reference your transmission serial number with the parts catalog for confirmation.
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