Overview
The ZF 0730.200.273 THRUST WASHER is a precision-engineered OEM genuine component designed to manage axial loads and maintain critical clearances within the planetary gear sets of heavy-duty ZF transmissions. Positioned between rotating shafts and stationary housings, this hardened steel washer prevents metal-to-metal contact, ensuring smooth power flow and extending the service life of the entire drivetrain. As a key wear item in construction machinery transmissions, the SKU 0730.200.273 is often inspected during differential overhauls, where it works in concert with the 5838109007: DIFFERENTIAL to absorb thrust forces generated under heavy load.
Symptoms of Failure
When the ZF 0730.200.273 thrust washer wears beyond its tolerance, operators will notice distinct performance degradation. Look for these specific failure indicators:
- Intermittent gear slipping under load – Worn thrust clearance allows planetary gears to shift out of alignment, causing momentary power loss when climbing grades or digging.
- Metallic grinding noise from the transmission housing – As the washer thins, hardened steel surfaces contact directly, producing a distinct high-pitched whine or grinding sound during acceleration.
- Contaminated transmission oil with bronze or steel particles – Accelerated wear of the thrust washer sheds fine metallic debris into the lubricant, visible during oil changes as glitter-like particles.
- Increased end-play in the output shaft – Measurable axial movement at the PTO or drive flange indicates the thrust washer has lost its critical spacing function.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.200.273 |
| Material | Case-hardened alloy steel (SAE 8620 equivalent) |
| Outer Diameter | 73.0 mm |
| Inner Diameter | 52.0 mm |
| Thickness | 2.0 mm |
| Surface Hardness | 58-62 HRC |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.200.273 |
Compatibility
This thrust washer is a direct fit for ZF WG series powershift transmissions commonly used in wheel loaders, graders, and telehandlers. Specifically, it is compatible with the WG180, WG200, and WG210 transmission models. It also appears in certain ZF 4WG-200 and ZF 6WG-200 variants. During rebuilds, this washer is frequently replaced alongside the 0750117075: TAPER ROLLER BEARING and the 2095209019: DIFFERENTIAL to restore factory tolerances. Always verify the 0631329086: SPRING PIN condition during installation, as it secures the washer in its bore.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838300817 | THRUST WASHER | Axial load distribution in planetary gear sets |
| 5838300682 | DIFFERENTIAL AXLE | Torque transfer shaft for differential assembly |
| 5838300811 | THRUST WASHER | Thrust bearing surface for output shaft |
| 5841302064 | THRUST WASHER | Spacer washer for clutch pack preload |
| 5838300137 | OUTER CLUTCH DISK | Steel friction plate for clutch engagement |
| 5838300138 | INNER CLUTCH DISK | Friction-lined plate for torque transfer |
