Overview
The ZF 0730.303.969 WASHER is a precision-engineered OEM genuine shim component designed to maintain critical axial clearances within heavy-duty construction machinery transmissions. This hardened steel washer sits between the differential housing and the axle bevel gear assembly, ensuring proper preload and alignment of rotating elements. As part number 0730.303.969, it directly supports the load distribution across the 5838109012: DIFFERENTIAL and 0750117075: TAPER ROLLER BEARING assemblies, preventing metal-to-metal contact during high-torque operations in wheel loaders and graders.
Symptoms of Failure
- Transmission oil leaks from axle housing seals: A worn 0730.303.969 washer allows excessive axial play, forcing lubricant past the differential housing gasket. Search query: “ZF transmission oil leak between axle and housing”.
- Intermittent gear slipping under load: When the washer thickness degrades, the 2093209023: DIFFERENTIAL loses proper mesh with the pinion, causing momentary power loss during excavation. Search query: “ZF WG200 gear slipping when digging”.
- Metallic grinding noise during turns: Insufficient washer preload leads to differential carrier bearing chatter, particularly audible in tight-radius maneuvers. Search query: “grinding noise ZF transmission turning corners”.
- Premature bearing failure: A collapsed washer forces the taper roller bearing to operate outside its designed clearance range, accelerating raceway spalling. Search query: “ZF taper roller bearing failure symptoms”.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.303.969 |
| Material | Case-hardened alloy steel (DIN 1.7131) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.5 mm |
| Thickness | 2.50 mm (selective fit) |
| Weight | 0.045 kg |
| Surface Hardness | 58-62 HRC |
| OEM Reference | ZF 0730.303.969 |
Compatibility
This washer is engineered for ZF WG180, WG200, and WG310 series powershift transmissions commonly found in construction machinery such as Caterpillar, Volvo, and Komatsu wheel loaders. It is a direct replacement for the 5838300626: DIFFERENTIAL HOUSING shim pack, ensuring correct end-play for the differential carrier assembly. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209023 | DIFFERENTIAL | Rear axle torque distribution |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential assembly |
| 0631329088 | SPRING PIN | Secures shift fork position |
| 5838300811 | THRUST WASHER | Controls axial clearance in planetary set |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Drives final reduction gears |
| 5838300753 | THRUST WASHER | Adjusts differential side gear clearance |
| 5838300818 | THRUST WASHER | Compensates for housing wear |
Frequently Asked Questions
Q: Can I reuse the 0730.303.969 washer during a rebuild?
A: No. ZF specifies this as a one-time-use selective shim. Reusing it risks improper preload on the 0750117075: TAPER ROLLER BEARING, leading to premature failure.
Q: How do I measure the correct washer thickness?
A: Use a depth micrometer on the differential housing bore, then subtract the bearing protrusion. The 0730.303.969 is available in 0.05 mm increments from 2.00 mm to 3.00 mm.
Q: Does this washer fit the ZF WG180 transmission?
A: Yes, it is compatible with WG180, WG200, and WG310 models when used with the 5838300626: DIFFERENTIAL HOUSING. Always confirm your housing part number before installation.
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Phone: +86 158 2286 3467 |
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