Overview
The ZF 0730.301.093 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearance and load distribution within ZF heavy-duty transmission assemblies. Positioned between rotating shafts and stationary housings, this washer prevents metal-on-metal contact and ensures proper lubrication flow. The SKU 0730.301.093 is commonly found in the differential and final drive sections of construction machinery transmissions, where it absorbs thrust loads and stabilizes gear alignment. Without this washer, internal components experience accelerated wear and misalignment.
Symptoms of Failure
- Transmission oil leaks around the differential housing: A worn 0730.301.093 washer can cause seal distortion, leading to visible fluid seepage near the 5838300626: DIFFERENTIAL HOUSING.
- Gear slipping under load during excavation: Excessive axial play from a degraded washer allows gears to disengage intermittently, especially in WG180 and WG200 transmissions.
- Metallic grinding noises from the axle area: Insufficient clearance causes the 0750117075: TAPER ROLLER BEARING to contact adjacent surfaces, producing a distinct high-pitched whine.
- Reduced power transfer to wheels: Worn washers allow the 5838109012: DIFFERENTIAL to shift laterally, reducing torque delivery by up to 15%.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.301.093 |
| Material | Case-hardened steel (DIN 1.7131) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.5 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.301.093 |
| Hardness | HRC 58-62 |
Compatibility
This washer is engineered for ZF WG series transmissions commonly used in wheel loaders, graders, and dump trucks. Compatible models include WG180, WG200, WG210, and WG250. It also fits select ZF differential assemblies such as the 2093209023: DIFFERENTIAL and works in tandem with the 5838300626: DIFFERENTIAL HOUSING for proper sealing. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial shaft loads |
| 2093209023 | DIFFERENTIAL | Secondary differential for planetary axles |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329088 | SPRING PIN | Locks gear components to shafts |
| 5838300811 | THRUST WASHER | Reduces axial friction in gear sets |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at 90-degree angles |
| 5838300633 | AXLE | Transmits rotational force to wheels |
| 5838300753 | THRUST WASHER | Controls end-play in differential pinions |
| 5838300818 | THRUST WASHER | Provides wear surface for sun gears |
Frequently Asked Questions
Q: Can I reuse the 0730.301.093 washer during a transmission rebuild?
No. This washer is a single-use component due to its case-hardened surface that deforms during initial torque application. Always install a new OEM washer to maintain proper preload.
Q: Does this washer fit ZF WG180 transmissions with serial numbers after 2015?
Yes, the 0730.301.093 is backward-compatible with all WG180, WG200, and WG210 variants. However, verify your differential housing part number matches the 5838300626: DIFFERENTIAL HOUSING for correct fitment.
Q: What torque specification is required when installing this washer?
Install with 120 Nm on the differential bearing cap bolts. Over-torquing can crush the washer and cause premature failure of the 0750117075: TAPER ROLLER BEARING.
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