Overview
The ZF 0730.110.077 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 assemblies and housing surfaces, acting as a sacrificial wear surface that prevents metal-on-metal contact. As part of the differential and final drive assembly, the SKU 0730.110.077 ensures proper load distribution across planetary gear sets, directly influencing torque transfer efficiency. When paired with a 5838109009: DIFFERENTIAL or a 0750117075: TAPER ROLLER BEARING, this washer forms a critical boundary between rotating and stationary components.
Symptoms of Failure
- Transmission oil leaks near axle housing: A worn 0730.110.077 washer allows axial play, breaking the seal between the differential housing and output shaft, leading to visible fluid seepage.
- Gear slipping under load in construction equipment: When this thrust washer loses its precise thickness, gear mesh depth decreases, causing intermittent power loss during excavation or grading operations.
- Metallic grinding noise during turns: Excessive clearance from a degraded washer permits the 2093209023: DIFFERENTIAL to contact the housing, producing a distinct high-pitched scraping sound.
- Premature bearing failure: A collapsed washer misaligns the 5838300626: DIFFERENTIAL HOUSING, placing uneven stress on adjacent roller bearings.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.110.077 |
| Material | Case-hardened steel (DIN 1.7131 equivalent) |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 52.0 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.110.077 |
| Surface Hardness | HRC 58-62 |
Compatibility
This genuine ZF washer is engineered for use in the following transmission models commonly found in construction machinery: WG180, WG200, WG210, and WG250 series. It also applies to certain ZF 4WG-200 and 5WG-300 variants used in wheel loaders and telehandlers. Always verify fitment with your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109009 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209023 | DIFFERENTIAL | Secondary differential assembly |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures gear alignment |
| 5838300811 | THRUST WASHER | Controls axial clearance |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheels |
| 5838300633 | AXLE | Rotates wheel hub |
| 5838300753 | THRUST WASHER | Secondary axial spacer |
| 5838300818 | THRUST WASHER | Final drive clearance shim |
Frequently Asked Questions
Q: Can I reuse the 0730.110.077 washer during a rebuild?
A: No. This is a single-use crush washer that deforms during initial torque application. Always replace with a new OEM part to maintain proper preload on the differential assembly.
Q: What happens if I install a washer with incorrect thickness?
A: Using a washer thinner than 2.5 mm will cause excessive end-play, leading to gear rattle and accelerated wear on the 0750117075: TAPER ROLLER BEARING. A thicker washer may bind the differential, causing overheating.
Q: Does this washer fit ZF 4WG-200 transmissions?
A: Yes, the 0730.110.077 is a standard component in 4WG-200, 5WG-300, and WG180 series transmissions used in Caterpillar, Volvo, and Komatsu loaders.
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