ZF 0730.112.603 SHIM | OEM Genuine Part

Overview

The ZF 0730.112.603 SHIM is a precision-engineered OEM genuine spacer component designed to establish exact axial clearances within ZF heavy-duty transmission assemblies. Positioned between the differential housing and the crown wheel mounting surfaces, this shim compensates for manufacturing tolerances and ensures optimal gear mesh patterns. The SKU 0730.112.603 is critical for maintaining proper preload on bearings and preventing backlash in construction machinery transmissions. Without this shim, the 2099109002 DIFFERENTIAL and 2099364014 CROWN WHEEL cannot achieve the precise alignment required for long-term durability under heavy loads.

Symptoms of Failure

• Excessive gear backlash and driveline clunking – When the 0730.112.603 shim compresses or wears, the 2099209001 DIFFERENTIAL assembly develops looseness, causing audible knocking during acceleration or deceleration.
• Oil leaks from the axle housing seal area – A degraded shim alters the position of the 2098309010 DIFFERENTIAL HOUSING, leading to seal misalignment and fluid seepage around the output flanges.
• Premature bearing noise or whining – Incorrect shim thickness forces tapered roller bearings to operate outside their designed preload range, generating a high-pitched whine that intensifies with speed.
• Intermittent gear slipping under load – Worn shims allow the crown wheel to shift axially, causing momentary loss of torque transfer when the machine encounters steep grades or heavy bucket loads.

Technical Specifications

Compatibility

This shim is engineered for ZF WG-series powershift transmissions commonly found in wheel loaders, graders, and telehandlers. It directly supports the following models: WG180, WG200, WG210, WG250, and WG310. The 0730.112.603 is also used in ZF 4WG-200 and 6WG-200 variants where the differential assembly requires precise axial shimming. Always verify the existing shim stack thickness before replacement, as this part is often used in combination with other selective shims to achieve the specified 0.05–0.15 mm end-play tolerance.

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