Overview
The ZF 0730.302.882 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within the planetary gear sets of heavy-duty construction machinery transmissions. This hardened steel washer sits between rotating gear assemblies and stationary housings, preventing metal-on-metal contact and ensuring consistent load distribution under extreme torque conditions. As part number 0730.302.882, it is an essential wear item that directly supports the longevity of adjacent drivetrain components, including the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING within the same assembly.
Symptoms of Failure
- Transmission oil leaks around the differential housing – When the washer wears beyond tolerance, it allows excessive axial movement, compromising seal integrity and causing fluid seepage.
- Gear slipping under heavy load – A degraded washer reduces preload on the 2093209023: DIFFERENTIAL assembly, leading to momentary power loss during excavation or grading operations.
- Metallic grinding noise from the transmission sump – Worn washer fragments contaminate the oil, causing audible friction between the 5838300626: DIFFERENTIAL HOUSING and rotating gears.
- Increased backlash in the driveline – Operators may notice a clunking sensation when shifting between forward and reverse, indicating excessive clearance that the washer can no longer control.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.302.882 |
| Material | Hardened Alloy Steel (C45E + Induction Hardened) |
| Outer Diameter | 82.0 mm |
| Inner Diameter | 60.5 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.302.882 |
| Surface Finish | Ground, 0.8 µm Ra |
Compatibility
This washer is engineered for ZF WG-series powershift transmissions commonly found in wheel loaders, graders, and telehandlers. It is a direct fit for the following models: WG180, WG200, WG210, and WG250. It also applies to select ZF 4WG-200 and 6WG-310 variants used in construction machinery from manufacturers such as Caterpillar, Volvo, and JCB. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on shafts |
| 2093209023 | DIFFERENTIAL | Secondary differential for planetary gear sets |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and protects differential components |
| 0631329088 | SPRING PIN | Secures gears and shafts in alignment |
| 5838300811 | THRUST WASHER | Reduces friction between rotating and stationary parts |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at right angles in the axle |
| 5838300633 | AXLE | Transmits rotational force to wheels |
| 5838300753 | THRUST WASHER | Controls end-play in planetary gear carriers |
| 5838300818 | THRUST WASHER | Provides axial support for sun gears |
Frequently Asked Questions
Q: How often should the ZF 0730.302.882 washer be replaced?
A: This washer should be inspected during every major transmission overhaul (typically every 4,000–6,000 operating hours). Replace it if thickness measures below 2.3 mm or if any edge deformation is visible.
Q: Can I reuse the old washer if it looks clean?
A: No. Even visually intact washers can have microscopic work-hardening that reduces their ability to maintain proper preload. Always install a new OEM genuine 0730.302.882 washer to avoid premature bearing or differential failure.
Q: Is this washer compatible with ZF 4WG-200 transmissions?
A: Yes. The 0730.302.882 washer is used in the planetary output section of 4WG-200, 6WG-310, and all WG180–WG250 models. Confirm your transmission tag number for absolute fitment.
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