ZF 0730.108.399 SHIM | OEM Genuine Part

Overview

The ZF 0730.108.399 SHIM is a precision-engineered spacing component designed for heavy-duty construction machinery transmissions. This OEM genuine part sits within the differential and planetary gear assembly, where it controls axial clearance and preload between rotating elements. By maintaining exact tolerances, the shim prevents metal-to-metal contact and ensures proper gear mesh alignment. The SKU 0730.108.399 is a factory-specified shim that must be selected during transmission rebuilds to restore factory backlash specifications.

Symptoms of Failure

When this shim wears or is incorrectly sized, operators will notice excessive differential noise during turns—a grinding or whining sound from the axle housing. Another common failure symptom is premature bearing failure due to incorrect preload, which can lead to gear slippage under load. You may also observe metal particles in the transmission oil filter, indicating that the shim has worn through its surface coating. Finally, vibration at specific RPM ranges often points to lost axial clearance in the differential carrier assembly.

Technical Specifications

Compatibility

This shim is engineered for ZF heavy-duty powershift transmissions used in construction machinery. It is a direct fit for the ZF WG180, WG200, and WG210 series. The part also applies to ZF 4WG-200 and 6WG-200 variants found in wheel loaders, graders, and dump trucks. Always verify the shim stack height using the factory service manual when replacing this component alongside the 5838109007 DIFFERENTIAL or the 0750117075 TAPER ROLLER BEARING.

During assembly, this shim works in concert with the 2095209019 DIFFERENTIAL to establish correct side gear clearance. The 0631329086 SPRING PIN must also be inspected for wear when replacing the shim, as pin fatigue can alter shim loading characteristics.

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