ZF 2049.309.524 SHIM | OEM Genuine Part

Overview

The ZF 2049.309.524 SHIM is a precision-engineered OEM genuine part designed to establish critical axial clearances within ZF heavy-duty powershift transmissions. This thin, hardened steel component sits between the transmission housing and bearing assemblies, compensating for manufacturing tolerances to ensure correct gear mesh and load distribution. The SKU 2049.309.524 is essential for maintaining the tight tolerances required in construction machinery transmissions, preventing premature wear on adjacent components. When paired with a TRANSMISSION HOUSING, this shim guarantees the rotating assembly remains properly aligned under high torque loads.

Symptoms of Failure

• Excessive axial play in output shaft — A worn or collapsed shim allows the shaft to move laterally, causing clunking noises during gear engagement and uneven tire wear on wheel loaders.
• Intermittent gear slipping under load — When the 2049.309.524 loses its calibrated thickness, clutch packs may not fully engage, leading to power loss when climbing grades or digging.
• Oil contamination from metal debris — A failing shim grinds against the HOUSING, shedding fine metallic particles into the transmission fluid, visible during routine oil changes.
• Vibration at specific RPM ranges — Incorrect shim stack height alters gear backlash, producing resonant vibrations felt through the chassis during highway travel.

Technical Specifications

Compatibility

This shim is primarily used in ZF WG180, WG200, and WG310 series powershift transmissions found in construction machinery such as wheel loaders, telehandlers, and graders. It also applies to select ZF 4WG-200 and 6WG-200 variants. Always verify the shim stack height during rebuilds; the 2049.309.524 is often selected in combination with the HOUSING and COVER to achieve the specified preload. For final drive applications, confirm compatibility with your specific transmission serial number.

Related Components

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“name”: “How do I know if the ZF 2049.309.524 shim needs replacement?”,
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“text”: “Measure the axial play in the output shaft. If play exceeds 0.15 mm, or if you find metal shavings in the oil filter, the shim has likely worn beyond its service limit. Always replace it during a full transmission rebuild.”
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“@type”: “Question”,
“name”: “Can I reuse the 2049.309.524 shim during a rebuild?”,
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“text”: “No. This shim is a single-use component because it cold-works during initial assembly. Reusing it will not provide the correct preload, leading to premature bearing failure. Always install a new OEM genuine shim.”
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“text”: “The shim has no directional orientation, but ensure it is clean and free of burrs. Apply a thin film of transmission fluid to prevent galling during assembly. Stack multiple shims if needed, but never exceed three to maintain stack stability.”
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