Overview
The ZF 0730.108.450 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within heavy-duty ZF construction machinery transmissions. This hardened steel washer sits between planetary gear sets and the differential housing, acting as a load-bearing spacer that prevents metal-to-metal contact under extreme torque loads. As an original equipment manufacturer part, the SKU 0730.108.450 ensures exact dimensional tolerances required for proper gear mesh and oil flow distribution. When installed alongside the 5838300626: DIFFERENTIAL HOUSING, this washer forms a sealed boundary that protects internal bearings from contamination.
Symptoms of Failure
- Transmission oil leaks at axle housing interface: A worn 0730.108.450 washer allows pressurized fluid to bypass the differential housing seal, causing visible drips beneath the equipment during operation.
- Intermittent gear slipping under load: When the washer thickness degrades beyond 0.15mm tolerance, axial play develops in the planetary carrier, leading to momentary power loss during digging or lifting cycles.
- Metallic grinding noise from differential area: Failed washers permit the 2093209023: DIFFERENTIAL gears to contact the housing, producing a distinct high-pitched whine that escalates with engine RPM.
- Premature taper roller bearing failure: Insufficient washer preload causes the 0750117075: TAPER ROLLER BEARING to operate outside its designed contact angle, accelerating raceway spalling.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.108.450 |
| Material | Case-hardened 16MnCr5 steel |
| Outer Diameter | 108.0 mm |
| Inner Diameter | 73.0 mm |
| Thickness | 4.50 mm |
| Hardness | 58-62 HRC |
| Weight | 0.18 kg |
| OEM Reference | ZF 0730.108.450 |
Compatibility
This washer is engineered for ZF WG series powershift transmissions commonly found in wheel loaders, graders, and material handlers. Primary compatible models include the WG180, WG200, and WG240 series. It also fits select ZF Ecomat 4HP and 5HP automatic transmissions used in medium-duty construction vehicles. Always verify fitment by cross-referencing the 5838109012: DIFFERENTIAL assembly configuration in your specific transmission model.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on differential shaft |
| 2093209023 | DIFFERENTIAL | Secondary differential assembly for limited-slip applications |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329088 | SPRING PIN | Secures washer alignment in housing groove |
| 5838300811 | THRUST WASHER | Reduces axial friction on planetary carrier |
| 5838300721 | AXLE BEVEL GEAR | Transfers power from differential to axle shafts |
| 5838300633 | AXLE | Drives wheel hubs through final reduction gears |
| 5838300753 | THRUST WASHER | Controls end-play in differential side gears |
| 5838300818 | THRUST WASHER | Provides bearing surface for output shaft |
Frequently Asked Questions
Q: Can I reuse the 0730.108.450 washer during a transmission rebuild?
A: No. This washer undergoes plastic deformation during initial torque application. Always install a new OEM washer to maintain proper preload on the differential bearing assembly.
Q: What torque specification applies to the differential housing bolts when installing this washer?
A: For WG200 transmissions, tighten M12 housing bolts to 95 Nm using a cross-sequence pattern. The washer must be centered on the housing pilot before final torque.
Q: How does this washer differ from the 5838300811 thrust washer?
A: The 0730.108.450 is a hardened steel spacer for axial positioning, while the 5838300811 is a softer bronze-faced thrust washer designed for dynamic sliding contact with planetary gears.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
