Overview
The ZF 0730.109.383 SHIM is a precision-engineered OEM genuine part designed to establish critical axial clearances within ZF heavy-duty transmission assemblies. Positioned between the differential housing and bearing races, this shim compensates for manufacturing tolerances and ensures correct gear mesh alignment. The SKU 0730.109.383 is a factory-specified component that directly supports load distribution in construction machinery transmissions, preventing premature wear on adjacent rotating elements. When installed alongside a 5838109012: DIFFERENTIAL, this shim maintains the precise preload necessary for optimal torque transfer under heavy operational loads.
Symptoms of Failure
- Transmission whining noise under load: A worn or collapsed shim allows excessive axial play, causing the differential gears to contact housing walls, producing a high-pitched whine during acceleration.
- Intermittent gear slipping in forward gears: When the 0730.109.383 loses its calibrated thickness, the 0750117075: TAPER ROLLER BEARING loses preload, leading to momentary power loss during gear engagement.
- Oil seepage at differential housing seam: Incorrect shim stack height distorts housing alignment, creating micro-gaps that allow transmission fluid to escape past the gasket surface.
- Vibration in the driveline at low RPM: Worn shims permit radial movement of the 2093209023: DIFFERENTIAL assembly, generating low-frequency vibrations felt through the chassis during idle or creep operations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0730.109.383 |
| Material | Case-hardened steel (DIN 1.3505 equivalent) |
| Thickness | 1.50 mm ±0.02 mm |
| Outer Diameter | 85.0 mm |
| Inner Diameter | 62.0 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.109.383 |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
Compatibility
This shim is engineered for ZF WG-series powershift transmissions commonly deployed in construction machinery. It is a direct fit for the following ZF models: WG180, WG200, WG210, and WG250. The 0730.109.383 is also compatible with select ZF ERGOPOWER and ECOMIX transmissions used in wheel loaders and graders. Always verify the shim stack count when servicing the 5838300626: DIFFERENTIAL HOUSING, as multiple shims may be stacked to achieve the factory specified end-play of 0.05–0.15 mm.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque split assembly |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures shim stack alignment |
| 5838300811 | THRUST WASHER | Reduces axial friction |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Rotational support member |
| 5838300753 | THRUST WASHER | Controls gear end-play |
| 5838300818 | THRUST WASHER | Bearing surface protection |
Frequently Asked Questions
Q: Can I reuse the 0730.109.383 shim during a rebuild?
A: ZF recommends always replacing shims during transmission overhauls. The shim material work-hardens over time, and reusing it may result in incorrect preload on the taper roller bearing, leading to premature differential failure.
Q: How do I measure if this shim is the correct thickness for my WG200?
A: Use a micrometer to measure the shim stack after torquing the differential housing bolts to 120 Nm. The total stack should produce 0.08–0.12 mm of axial movement when measured with a dial indicator at the differential ring gear.
Q: Does this shim fit the ZF 4WG-200 transmission?
A: Yes, the 0730.109.383 is a standard component in the 4WG-200 series. Always cross-reference with the parts manual for your specific serial number, as some late-model units use a 1.55 mm shim variant.
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