Overview
The ZF 0730.110.395 WASHER is an OEM genuine shim component engineered to maintain precise axial clearance within heavy-duty construction machinery transmissions. This hardened steel washer sits between the differential housing and the axle bevel gear assembly, ensuring correct preload on the 0750117075: TAPER ROLLER BEARING. By absorbing thrust loads and preventing metal-to-metal contact, the SKU 0730.110.395 directly supports the structural integrity of the 5838300626: DIFFERENTIAL HOUSING under extreme torque conditions. Its precise thickness is critical for maintaining gear mesh patterns and overall transmission longevity in ZF powertrains.
Symptoms of Failure
- Transmission oil seepage at differential housing interface – A worn 0730.110.395 washer allows excessive end-play, breaking the seal between the 5838109012: DIFFERENTIAL and housing, leading to visible fluid loss around the axle flange.
- Low-speed gear grinding or clunking – As the washer compresses unevenly, the 2093209023: DIFFERENTIAL loses its axial positioning, causing intermittent gear clash during loader reversing or excavator slewing.
- Increased drivetrain vibration under load – Thrust washer degradation permits radial play in the taper roller bearing, transmitting harsh vibration through the chassis during heavy digging or grading operations.
- Premature bearing overheating – Insufficient preload from a collapsed washer forces the taper roller bearing to operate outside its designed clearance, generating excess heat and accelerating lubricant breakdown.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.110.395 |
| Material | Hardened carbon steel (C45E, 58-62 HRC) |
| Outer Diameter | 110 mm |
| Inner Diameter | 73 mm |
| Thickness | 3.95 mm |
| Weight | 0.18 kg |
| OEM Reference | ZF 0730.110.395 |
| Surface Finish | Ground, phosphate coated |
Compatibility
This genuine ZF thrust washer is primarily specified for the WG180 and WG200 series power-shift transmissions used in wheel loaders, dozers, and graders. It also appears in the 4WG-200 and 6WG-200 variants where differential preload adjustment is required. The 0730.110.395 fits both standard and limited-slip differential configurations within these heavy-duty ZF gearboxes. Always verify axial clearance specifications before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209023 | DIFFERENTIAL | Secondary differential for planetary axles |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Locks thrust washer in position |
| 5838300811 | THRUST WASHER | Secondary axial load distribution |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel ends |
| 5838300633 | AXLE | Drives final reduction gearing |
| 5838300753 | THRUST WASHER | Adjusts bevel gear backlash |
| 5838300818 | THRUST WASHER | Compensates for housing wear |
Frequently Asked Questions
Q: Can I reuse the 0730.110.395 washer during a differential rebuild?
A: No. This is a single-use crush-type shim. Reusing it will not restore proper preload and will lead to rapid bearing failure. Always install a new OEM washer.
Q: How do I measure if my current washer is worn?
A: Use a micrometer to check thickness at three points around the circumference. If any measurement is below 3.85 mm, or if you see uneven wear patterns, replace the 0730.110.395 immediately.
Q: Does this washer fit the ZF 4WG-310 transmission?
A: No. The 4WG-310 uses a larger 120 mm OD thrust washer. The 0730.110.395 is specific to WG180 and WG200 series only.
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