Overview
The ZF 0730.108.439 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 rotating gear sets and housing surfaces, acting as a load-bearing interface that prevents metal-on-metal contact. As a factory-specified part, the SKU 0730.108.439 ensures exact dimensional tolerances for long service life in demanding environments. It is commonly installed alongside the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING to stabilize gear mesh patterns.
Symptoms of Failure
- Transmission oil leaks at the differential housing: When the washer wears beyond its tolerance, it can allow the 5838300626: DIFFERENTIAL HOUSING to shift, breaking seal integrity.
- Intermittent gear slipping under load: A worn 0730.108.439 washer reduces preload on the 2093209023: DIFFERENTIAL, causing momentary power loss during excavation.
- Metallic grinding noise from the transmission center: Thinning of the washer allows axial play, leading to gear tooth contact with housing walls.
- Increased operating temperature: Friction from a collapsed washer generates excess heat, detectable via infrared thermography.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.108.439 |
| Material | Hardened Alloy Steel (SAE 8620) |
| Inner Diameter | 38.0 mm |
| Outer Diameter | 62.0 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.108.439 |
| Surface Finish | Ground, phosphate coated |
Compatibility
This washer is engineered for ZF heavy-duty transmissions commonly used in wheel loaders, graders, and excavators. Based on its dimensions and application, it fits the following ZF models: WG180, WG200, WG210, and WG310 series. It is also compatible with certain 4WG-200 and 5WG-210 variants. 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 loads on shafts |
| 2093209023 | DIFFERENTIAL | Secondary differential for planetary gears |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Secures gear alignment during assembly |
| 5838300811 | THRUST WASHER | Controls axial end-play in gear clusters |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at 90-degree angles |
| 5838300633 | AXLE | Transmits rotational force to wheels |
| 5838300753 | THRUST WASHER | Reduces friction on planetary gear faces |
| 5838300818 | THRUST WASHER | Provides wear surface for sun gear |
Frequently Asked Questions
Q: Can I reuse the 0730.108.439 washer during a rebuild?
A: No. This is a single-use crush-type washer that deforms during initial torque. Always replace it with a new OEM genuine part to maintain proper preload on the differential assembly.
Q: How do I know if my ZF transmission uses this washer?
A: Check your parts manual for the WG180 or WG200 series. The washer is typically located between the differential housing and the taper roller bearing. If you see part number 0730.108.439 stamped on the old component, it is the correct replacement.
Q: What tools are needed to install this washer?
A: Standard socket set and a torque wrench capable of 120-150 Nm. You will also need a bearing puller to access the 0750117075: TAPER ROLLER BEARING which sits adjacent to this washer.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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