Overview
The ZF 0730.109.561 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within heavy-duty construction machinery transmissions. This hardened steel washer sits between planetary gear sets and bearing races, acting as a load-spreading interface that prevents metal-to-metal contact under extreme torque. As a factory-specified part, the SKU 0730.109.561 ensures exact fitment and material hardness to match ZF’s original tolerances, directly supporting the longevity of adjacent rotating assemblies like the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING.
Symptoms of Failure
- Transmission oil leaks at the differential housing interface: When the washer wears beyond its service limit, it allows lateral movement that compromises the seal between the 5838300626: DIFFERENTIAL HOUSING and the output shaft, leading to visible fluid seepage.
- Intermittent gear slipping under load: A collapsed or fatigued washer reduces preload on the planetary carrier, causing momentary loss of torque transfer during heavy excavation cycles.
- Abnormal metallic grinding from the axle area: Worn washer material contaminates the lubricant, accelerating wear on the 2093209023: DIFFERENTIAL gears and producing a distinct high-pitched noise during turns.
- Increased backlash in the driveline: Excessive axial play from a degraded washer creates a clunking sensation when shifting between forward and reverse.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.109.561 |
| Material | Hardened carbon steel (HRC 58-62) |
| Outer Diameter | 72.0 mm |
| Inner Diameter | 52.5 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.109.561 |
Compatibility
This washer is engineered for ZF’s heavy-duty powershift transmission series commonly used in wheel loaders, graders, and dozers. It is a direct fit for the WG180, WG200, and WG211 models. It also appears in the final drive assemblies of the 4WG-200 and 6WG-200 series, where it works in concert with the 5838300811: THRUST WASHER and 5838300721: AXLE BEVEL GEAR to manage end-play. Always verify your transmission serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on shafts |
| 2093209023 | DIFFERENTIAL | Secondary torque distribution unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and protects differential gears |
| 0631329088 | SPRING PIN | Secures alignment of mating components |
| 5838300811 | THRUST WASHER | Controls axial clearance in gear sets |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at right angles |
| 5838300633 | AXLE | Rotates to drive the wheel hub |
| 5838300753 | THRUST WASHER | Reduces friction on planetary carrier |
| 5838300818 | THRUST WASHER | Provides wear surface for sun gear |
Frequently Asked Questions
Q: Can I reuse the 0730.109.561 washer during a rebuild?
A: No. This is a single-use crush washer that deforms slightly during installation to create a precise preload. Reusing it will lead to incorrect clearances and premature failure of the 5838300818: THRUST WASHER and bearings.
Q: How do I know if my ZF transmission uses this washer?
A: Check the parts manual for your WG180, WG200, or WG211 series. The washer is typically found in the differential carrier assembly, between the sun gear and the 5838300633: AXLE.
Q: What torque specification applies to the retaining nut when installing this washer?
A: ZF specifies 450 Nm for the axle nut that compresses this washer. Always use a new 0631329088: SPRING PIN to lock the nut after torquing.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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