Overview
The ZF 0730.301.091 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 planetary gear sets and the differential housing, maintaining critical end-play tolerances that prevent gear clash and bearing preload loss. As part number 0730.301.091, it functions as a load-spreading interface that absorbs thrust forces during high-torque operations. When installed alongside the 5838109012: DIFFERENTIAL, this washer ensures the differential assembly remains properly seated against the 5838300626: DIFFERENTIAL HOUSING, preventing metal-on-metal contact that accelerates wear.
Symptoms of Failure
- Transmission oil leaks at axle housing seals — A worn 0730.301.091 washer allows excessive axial movement, distorting the 0750117075: TAPER ROLLER BEARING clearance and forcing lubricant past seals.
- Intermittent gear slipping under load — When the washer thickness degrades, the 2093209023: DIFFERENTIAL shifts out of alignment, causing momentary torque loss during excavation or grading.
- Metallic grinding noise from differential area — Reduced washer height permits the bevel gear to contact the housing, producing a distinct scraping sound during turns.
- Premature bearing failure in WG-series transmissions — Incorrect end-play from a collapsed washer overloads the taper roller bearing, leading to brinelling and eventual seizure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.301.091 |
| Material | Case-hardened steel (DIN 1.3505 equivalent) |
| Outer Diameter | 82.5 mm |
| Inner Diameter | 62.0 mm |
| Thickness | 2.5 mm (selective fit) |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.301.091 |
| Hardness | HRC 58-62 |
Compatibility
This washer is dimensionally validated for ZF WG180, WG200, and WG310 series transmissions commonly installed in wheel loaders, excavators, and telehandlers. It also fits select ZF Ecolife models used in construction machinery. Always verify the washer thickness against your differential assembly’s shim stack requirement. For complete rebuilds, pair this part with the 0631329088: SPRING PIN and 5838300811: THRUST WASHER to restore factory tolerances.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotational loads |
| 2093209023 | DIFFERENTIAL | Secondary differential for multi-axle drives |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses gear set and washer |
| 0631329088 | SPRING PIN | Secures washer alignment |
| 5838300811 | THRUST WASHER | Reduces axial friction |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Driveshaft connection component |
| 5838300753 | THRUST WASHER | Secondary axial load spacer |
| 5838300818 | THRUST WASHER | High-load thrust surface |
Frequently Asked Questions
Q: Can I reuse the 0730.301.091 washer during a transmission rebuild?
No. This washer is a single-use selective shim. Reusing it risks incorrect end-play, leading to differential bearing failure within 200 operating hours.
Q: How do I verify the correct washer thickness for my ZF WG200?
Measure the differential housing depth and subtract the bearing stack height. The 0730.301.091 is a 2.5mm baseline; use a micrometer to confirm your assembly requires this exact thickness.
Q: Does this washer require lubrication before installation?
Yes. Apply ZF-approved gear oil to both faces to prevent galling during initial rotation. Never use anti-seize compounds, as they alter the friction coefficient.
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Phone: +86 158 2286 3467 |
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