Overview
The ZF 0730.106.661 SHIM is a precision-engineered OEM genuine part designed to establish critical axial clearances within heavy-duty ZF transmission assemblies. This shim sits between the differential housing and the bearing race, ensuring that gear mesh patterns remain within factory tolerances under extreme loads. The SKU 0730.106.661 is specifically calibrated for use in construction machinery transmissions, where even a 0.1mm deviation can lead to premature component wear. By maintaining proper preload on the 0750117075: TAPER ROLLER BEARING, this shim directly influences the longevity of the entire differential assembly.
Symptoms of Failure
- Excessive differential backlash – When the shim compresses or corrodes, you will notice a clunking sound during direction changes, especially in wheel loaders and excavators.
- Oil seepage at the axle housing interface – A worn shim allows the 2093309078: DIFF.HOUSING to shift, breaking the seal and causing slow oil leaks.
- Gear whine under load – Incorrect shim thickness alters the contact pattern of the 2093109029: DIFFERENTIAL gears, producing a high-pitched whine during acceleration.
- Premature bearing failure – Without proper shim support, the 2093209094: DIFFERENTIAL bearings experience uneven loading, leading to spalling within 500 operating hours.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.106.661 |
| Material | Case-hardened steel (DIN 1.7131) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.0 mm |
| Thickness | 1.50 mm (selective fit) |
| Weight | 0.024 kg |
| OEM Reference | ZF 0730.106.661 |
Compatibility
This shim is engineered for ZF heavy-duty transmissions commonly found in construction machinery. It is a direct fit for the following ZF models: WG180, WG200, WG210, and WG250 series. These transmissions are used in articulated dump trucks, wheel loaders, and graders. Always verify the shim stack height against the 2097309085: DIFFERENTIAL AXLE during installation to ensure correct preload.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109029 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation under load |
| 2093209094 | DIFFERENTIAL | Secondary differential unit for multi-axle drives |
| 2093309078 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Secures shim and washer alignment |
| 0730300820 | THRUST WASHER | Controls axial movement of gears |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to final drive |
| 5838300811 | THRUST WASHER | Reduces friction on differential cross shaft |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear for torque splitting |
Frequently Asked Questions
Q: Can I reuse the 0730.106.661 shim after disassembly?
A: No. ZF recommends replacing this shim whenever the differential is serviced, as the material work-hardens and loses its precise thickness after initial torque application.
Q: How do I measure the correct shim thickness for my WG200 transmission?
A: Use a depth micrometer to measure the distance between the bearing seat and the differential housing face, then subtract the bearing width. The 0730.106.661 is a 1.50mm baseline; you may need to stack it with other shims to achieve the specified 0.05-0.15mm bearing preload.
Q: Will this shim work with aftermarket differentials?
A: The shim is machined to OEM tolerances for ZF castings. Aftermarket housings often have different shoulder heights, so we recommend using only with genuine ZF 2093309078: DIFF.HOUSING components to avoid clearance issues.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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