Overview
This ZF 0730.107.686 WASHER is a genuine OEM shim component engineered for precise axial clearance control within heavy-duty construction machinery transmissions. Positioned between the differential carrier and the housing assembly, this hardened steel washer maintains critical end-play tolerances that prevent gear train misalignment. The SKU 0730.107.686 is specifically designed to work in concert with the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING to ensure optimal load distribution across the planetary gear set. Without this washer, the entire differential assembly risks catastrophic contact fatigue.
Symptoms of Failure
- Transmission oil seepage at the differential housing interface: A worn 0730.107.686 washer reduces clamping force, allowing lubricant to escape past the 5838300626: DIFFERENTIAL HOUSING seal.
- Intermittent gear slipping under load: Excessive axial play from a compressed washer causes the 2093209023: DIFFERENTIAL to lose mesh engagement, particularly during excavation cycles.
- Metallic grinding noise during directional shifts: When the washer thickness degrades below 0.5mm, the taper roller bearing cage contacts the housing, producing a distinct high-pitched whine.
- Premature bearing failure in the output shaft: A collapsed washer forces the 0750117075: TAPER ROLLER BEARING to operate outside its designed preload range.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.107.686 |
| Material | Case-hardened alloy steel (SAE 8620 equivalent) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.0 mm |
| Thickness | 2.5 mm (selective fit tolerance ±0.05 mm) |
| Weight | 0.042 kg |
| Surface Hardness | 58-62 HRC |
| OEM Reference | ZF 0730.107.686 |
Compatibility
This washer is a direct replacement for ZF WG180, WG200, and WG250 series transmissions commonly found in wheel loaders, excavators, and telehandlers. It is also compatible with ZF 4WG-200 and 4WG-310 torque converter transmissions. Always verify the shim stack height using the 5838300811: THRUST WASHER and 5838300753: THRUST WASHER to achieve the specified preload.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque distribution unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and supports gear assembly |
| 0631329088 | SPRING PIN | Secures shift fork alignment |
| 5838300811 | THRUST WASHER | Controls axial clearance in planetary set |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Rotates to drive wheels |
| 5838300753 | THRUST WASHER | Reduces friction on differential side gears |
| 5838300818 | THRUST WASHER | Adjusts pinion gear depth |
Frequently Asked Questions
Q: Can I reuse the 0730.107.686 washer during a rebuild?
A: No. This is a single-use selective shim. Reusing it risks improper preload and accelerated wear on the 0750117075: TAPER ROLLER BEARING.
Q: How do I measure the correct washer thickness for my ZF transmission?
A: Use a depth micrometer to measure the bearing bore depth, then subtract the bearing width. The 0730.107.686 is available in 0.1 mm increments from 2.0 mm to 3.0 mm.
Q: Will this washer fit the ZF 4WG-310 model?
A: Yes, it is compatible with 4WG-310, WG180, and WG200 series when used with the 5838300626: DIFFERENTIAL HOUSING.
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Phone: +86 158 2286 3467 |
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