Overview
The ZF 0730.108.486 SHIM is a precision-engineered OEM genuine part designed to establish the correct axial clearance and preload within ZF heavy-duty transmission assemblies. This shim sits between the differential housing and the bearing journal, ensuring that gear mesh patterns remain within factory tolerances under extreme load conditions. The SKU 0730.108.486 is critical for maintaining the structural integrity of the final drive section, where it works in concert with the 5838109012: DIFFERENTIAL to prevent unwanted lateral movement of rotating components.
Symptoms of Failure
- Excessive differential backlash during load shifts — When the 0730.108.486 shim wears or compresses beyond spec, the 0750117075: TAPER ROLLER BEARING loses its preload, causing a noticeable clunk when engaging forward or reverse gears.
- Oil seepage at the axle housing interface — A degraded shim alters the sealing gap, leading to gradual lubricant loss around the differential carrier.
- Vibration under load at low speeds — Worn shim thickness allows the 2093209023: DIFFERENTIAL to oscillate axially, transmitting vibration through the driveline during excavation or grading operations.
- Premature bearing wear patterns — Incorrect shim stack height forces the taper roller bearing to operate outside its designed contact angle, accelerating fatigue.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.108.486 |
| Material | Case-hardened steel (DIN 1.3505 equivalent) |
| Outer Diameter | 108 mm |
| Inner Diameter | 73 mm |
| Thickness | 0.486 mm (selective fit) |
| Weight | 0.042 kg |
| OEM Reference | ZF 0730.108.486 |
| Surface Finish | Ground, Ra ≤ 0.4 µm |
Compatibility
This shim is engineered for ZF heavy-duty powershift transmissions commonly found in construction machinery. It is a direct fit for the WG180, WG200, and WG250 series, as well as the 4WG-310 torque converter transmission family. The 0730.108.486 is also used in certain ERGO-POWER and ECOMIX drivelines where the 5838300626: DIFFERENTIAL HOUSING requires precise shimming to accommodate thermal expansion during prolonged operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles while allowing speed differentiation |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on the differential carrier |
| 2093209023 | DIFFERENTIAL | Secondary differential unit for multi-axle drive configurations |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and supports differential gears and bearings |
| 0631329088 | SPRING PIN | Secures shim and bearing alignment during assembly |
| 5838300811 | THRUST WASHER | Controls axial end-play between differential gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers power from differential to axle shafts |
| 5838300633 | AXLE | Transmits rotational force to wheel hubs |
| 5838300753 | THRUST WASHER | Reduces friction on differential side gears |
| 5838300818 | THRUST WASHER | Provides wear surface for pinion gear thrust face |
Frequently Asked Questions
Q: Can I reuse the 0730.108.486 shim during a differential rebuild?
A: No. This shim is a selective-fit component that deforms plastically during initial torque-down. Always replace it with a new OEM shim to maintain proper preload on the taper roller bearing.
Q: How do I measure if the 0.486 mm thickness is correct for my application?
A: Use a micrometer to measure the shim stack gap between the differential housing and bearing race. The target preload is 0.05–0.10 mm of crush after final torque. If the gap exceeds 0.55 mm, select the next thicker shim from the ZF selective range.
Q: Will this shim fit the ZF 4WG-200 transmission?
A: Yes. The 0730.108.486 is dimensionally identical to the shim used in the 4WG-200 final drive assembly, provided the differential housing part number matches the 5838300626 casting.
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Phone: +86 158 2286 3467 |
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