Overview
The ZF 0730.108.445 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within the differential assembly of heavy-duty construction machinery transmissions. This hardened steel washer functions as a load-bearing shim, positioned between rotating gear sets and stationary housings to prevent metal-on-metal contact. Specifically, it sits within the final drive section of ZF powershift transmissions, ensuring that the 5838109012: DIFFERENTIAL maintains correct end-play tolerances. The SKU 0730.108.445 is a direct factory replacement part, guaranteeing the same metallurgical composition and dimensional accuracy as the original equipment.
Symptoms of Failure
- Transmission oil seepage from the axle housing: When this washer wears beyond its service limit, it allows excessive lateral movement of the 0750117075: TAPER ROLLER BEARING, compromising the lip seal and causing slow oil leaks.
- Intermittent gear slipping under load: A degraded 0730.108.445 washer permits axial play in the 2093209023: DIFFERENTIAL, leading to momentary disengagement of drive gears during heavy excavation work.
- Metallic grinding noise during turns: Worn clearance allows the differential carrier to contact the 5838300626: DIFFERENTIAL HOUSING, producing a distinct grinding sound that worsens with load.
- Increased backlash in the driveline: Operators may notice a delayed engagement or clunking sensation when shifting between forward and reverse, indicating the washer has compressed beyond its elastic limit.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.108.445 |
| Material | Case-hardened alloy steel (DIN 1.7131) |
| Outer Diameter | 108 mm |
| Inner Diameter | 72 mm |
| Thickness | 4.5 mm |
| Weight | 0.18 kg |
| Surface Hardness | 58-62 HRC |
| OEM Reference | ZF 0730.108.445 |
Compatibility
This washer is engineered for ZF powershift transmissions commonly found in wheel loaders, dozers, and telehandlers. It is a direct fit for the following ZF models: WG180, WG200, WG210, and WG310 series. The 0730.108.445 is also used in certain ZF 4WG-200 and 6WG-310 final drive assemblies. Always verify your transmission serial number against the OEM parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on differential |
| 2093209023 | DIFFERENTIAL | Secondary differential for planetary drives |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and supports differential gears |
| 0631329088 | SPRING PIN | Secures washer alignment in housing bore |
| 5838300811 | THRUST WASHER | Absorbs axial thrust from bevel gear |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Driveshaft connecting differential to wheel |
| 5838300753 | THRUST WASHER | Spacer for differential side gears |
| 5838300818 | THRUST WASHER | Adjusts pinion gear depth |
Frequently Asked Questions
Q: Can I reuse the 0730.108.445 washer during a differential rebuild?
No. This washer is a single-use crush-type component. Reusing it will result in incorrect preload and rapid bearing failure. Always install a new OEM washer.
Q: How do I know if my ZF transmission uses this specific washer thickness?
Measure the existing washer with a micrometer. The 0730.108.445 has a nominal thickness of 4.5 mm. If your original measures less than 4.3 mm, replacement is mandatory to restore proper differential bearing preload.
Q: Is this washer compatible with the ZF 4WG-200 transmission?
Yes, the 0730.108.445 is a standard component in the 4WG-200 final drive assembly. It works in conjunction with the 5838300811: THRUST WASHER to set the correct end float for the differential carrier.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
