Overview
The ZF 0730.111.070 WASHER is a precision-engineered OEM genuine component designed for critical load distribution within heavy-duty construction machinery transmissions. This hardened steel washer sits between rotating gear assemblies and housing surfaces, preventing axial play and maintaining correct gear mesh alignment. As part number 0730.111.070, it is frequently replaced during differential overhauls alongside the 5838109009: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING to restore factory tolerances. Its precise thickness ensures proper preload on the 2093209023: DIFFERENTIAL assembly, while the 5838300626: DIFFERENTIAL HOUSING provides the mating surface for this washer.
Symptoms of Failure
- Transmission oil leaks near differential housing: A worn 0730.111.070 washer allows excessive axial movement, breaking the seal between the differential housing and output shaft, causing visible fluid seepage.
- Gear slipping under heavy load: When this washer loses its original thickness, gear clearance increases, leading to intermittent slipping during excavation or grading operations.
- Metallic grinding noise from transmission: A collapsed washer permits metal-on-metal contact between the differential and housing, producing a distinct grinding sound during acceleration or deceleration.
- Premature taper roller bearing failure: Incorrect washer preload forces the 0750117075: TAPER ROLLER BEARING to operate outside its designed load range, accelerating bearing wear.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.111.070 |
| Material | Case-hardened alloy steel (DIN 1.7131) |
| Outer Diameter | 70 mm |
| Inner Diameter | 40 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.111.070 |
| Hardness | HRC 58-62 |
Compatibility
This washer is engineered for ZF WG series transmissions commonly used in construction machinery. It is a direct fit for the following ZF models: WG180, WG200, WG210, WG220, WG250, and WG310. The 0730.111.070 is also compatible with ZF differential assemblies that utilize the 5838300626: DIFFERENTIAL HOUSING and the 5838109009: DIFFERENTIAL. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109009 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating differential assembly |
| 2093209023 | DIFFERENTIAL | Secondary differential unit for multi-axle systems |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and supports differential gears |
| 0631329088 | SPRING PIN | Secures washer and gear alignment |
| 5838300811 | THRUST WASHER | Reduces axial friction in gear sets |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 5838300633 | AXLE | Connects differential to wheel hubs |
| 5838300753 | THRUST WASHER | Controls gear end-play in differential |
| 5838300818 | THRUST WASHER | Provides additional axial clearance control |
Frequently Asked Questions
Q: Can I reuse the 0730.111.070 washer during a transmission rebuild?
A: No. This washer is a single-use component that deforms slightly under torque to create a proper seal. Always install a new OEM washer to maintain correct preload on the differential assembly.
Q: How do I know if the 0730.111.070 is the correct thickness for my ZF transmission?
A: Measure the axial clearance between the differential housing and the taper roller bearing. If clearance exceeds 0.15 mm, replace the washer. The 2.5 mm thickness is standard for WG180 through WG310 models.
Q: Does this washer require any special lubrication during installation?
A: Apply a thin film of ZF-approved transmission oil to both faces of the washer before assembly. Do not use grease, as it can trap debris and accelerate wear on the 0750117075: TAPER ROLLER BEARING.
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