Overview
The ZF 0730.007.233 WASHER is an OEM genuine shim component engineered for precise axial clearance control within heavy-duty construction machinery transmissions. This hardened steel washer sits between the planetary gear set and the differential housing, functioning as a critical load-spreading interface that maintains correct gear mesh depth. The SKU 0730.007.233 is specifically designed to withstand high thrust loads and prevent metal-to-metal contact during torque transfer. When installed alongside a 5838109007: DIFFERENTIAL, this washer ensures the differential assembly rotates freely without binding, directly influencing shift quality and overall drivetrain longevity.
Symptoms of Failure
- Transmission oil leaks near the differential housing: A worn 0730.007.233 washer allows excessive axial play, which can deform the output shaft seal lip, causing fluid seepage around the bell housing.
- Intermittent gear slipping under load: When the washer thickness degrades, the 0750117075: TAPER ROLLER BEARING loses preload, leading to momentary loss of torque transfer during excavation or grading operations.
- Metallic grinding noise from the transmission sump: A collapsed washer permits the 2095209019: DIFFERENTIAL to contact the housing, producing a distinct low-frequency grinding sound that worsens with RPM increase.
- Vibration through the driveline during acceleration: Uneven washer wear creates a 0.2-0.5mm gap, causing the differential to oscillate and transmit harmonics into the chassis.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.007.233 |
| Material | Case-hardened 20MnCr5 steel |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.5 mm |
| Thickness | 2.50 mm (nominal) |
| Surface Hardness | 58-62 HRC |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.007.233 |
Compatibility
This washer is dimensionally validated for ZF WG180, WG200, and WG211 series powershift transmissions commonly used in wheel loaders, graders, and excavators from 15-30 ton classes. It also fits select ZF 4WG-310 and 6WG-260 models where the differential carrier uses a 42.5mm shaft journal. Always verify axial stack-up when replacing the 0631329086: SPRING PIN that retains the differential gear, as pin wear can alter washer clearance requirements.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109007 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential shaft radial loads |
| 2095209019 | DIFFERENTIAL | High-capacity differential for planetary axles |
| 0631329086 | SPRING PIN | Secures differential gear alignment |
| 5838300817 | THRUST WASHER | Axial load bearing for sun gear |
| 5838300682 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Planet gear thrust surface |
| 5841302064 | THRUST WASHER | Output shaft axial spacer |
| 5838300137 | OUTER CLUTCH DISK | Steel friction plate for clutch pack |
| 5838300138 | INNER CLUTCH DISK | Friction-lined clutch plate |
