ZF 4699.303.017 SHIM RING | OEM Genuine Part

Overview

The ZF 4699.303.017 SHIM RING is a precision-engineered OEM genuine part designed for axial clearance adjustment within heavy-duty ZF transmissions. This shim ring sits between the bearing cover and the housing assembly, ensuring correct preload on planetary gear sets. The SKU 4699.303.017 is critical for maintaining proper gear mesh alignment and preventing internal component wear. It is commonly used in construction machinery transmissions where load distribution and thermal expansion tolerances are demanding. This shim ring works in conjunction with the 4699101046 HOUSING and the 4699301109 HOUSING to secure the rotating assembly.

Symptoms of Failure

• Transmission gear slipping under load – When the shim ring wears or deforms, axial play increases, causing gears to lose engagement during heavy operation.
• Oil leaks from the bearing cover area – A worn shim ring can misalign the 4699301017 BEARING COVER, compromising the seal interface and allowing transmission fluid to escape.
• Abnormal whining or grinding noise from the transmission housing – Insufficient shim thickness leads to metal-on-metal contact between planetary gears and the 4699301085 COVER.
• Vibration during gear shifts – Incorrect axial clearance from a collapsed shim ring causes driveline shudder, especially in construction machinery operating at low RPM.

Technical Specifications

Compatibility

This shim ring is compatible with ZF WG180, WG200, and WG211 series transmissions commonly found in wheel loaders, excavators, and telehandlers. It is also used in ZF 4WG-200 and 6WG-200 power shift transmissions. Always verify the shim thickness requirement using the ZF service manual, as multiple shim variants exist for the same housing group.

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