ZF 2049.309.091 SHIM | OEM Genuine Part

Overview

The ZF 2049.309.091 SHIM is a precision-engineered adjustment component designed for critical clearance management within ZF heavy-duty construction machinery transmissions. This OEM genuine part, identified by SKU 2049.309.091, sits between the transmission housing and the bearing race or gear assembly to eliminate axial play and maintain correct gear mesh depth. By providing a calibrated thickness, this shim ensures that rotating assemblies remain within factory tolerances, preventing premature wear on adjacent components. It is commonly paired with the 2094101012: TRANSMISSION HOUSING to secure proper alignment during rebuilds.

Symptoms of Failure

• Excessive gear backlash and clunking: When the shim compresses or corrodes, axial clearance increases, causing noticeable driveline lash during direction changes.
• Premature bearing noise: A worn or missing shim allows the bearing to shift, generating a low-frequency rumble or whine that worsens under load.
• Oil contamination from metal particles: As the shim degrades, it can shed fine metallic debris into the lubricant, visible during oil changes as glitter or sludge.
• Hard shifting or gear slip: Incorrect shim thickness alters gear engagement depth, leading to delayed shifts or partial disengagement under torque.

Technical Specifications

Compatibility

This shim is engineered for ZF powershift transmissions commonly found in wheel loaders, graders, and excavators. It is directly compatible with the WG180 and WG200 series, as well as the 4WG-200 and 6WG-200 variants. It also fits select ERGO-POWER and Ecomat models where axial clearance adjustment is required. For proper installation, ensure the mating surfaces on the 2094301036: HOUSING and 2094298057: HOUSING are clean and free of burrs. The shim works in conjunction with the 2094301071: COVER to seal the adjustment cavity.

Related Components

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