ZF 4699.305.055 SHIM RING | OEM Genuine Part

Overview

The ZF 4699.305.055 SHIM RING is a precision-engineered OEM genuine component designed for critical axial clearance adjustment within heavy-duty construction machinery transmissions. This shim ring sits between the planetary gear set and the housing assembly, ensuring correct preload and gear mesh alignment. As part number 4699.305.055, it directly interfaces with the 4699101086 HOUSING and the 4699301223 HOUSING to maintain precise tolerances under extreme loads. Without this shim, internal clearances drift, leading to accelerated wear on adjacent components.

Symptoms of Failure

• Transmission oil leaks at housing joint: A worn or collapsed shim ring allows the housing faces to shift, breaking the seal integrity around the 0636302022 SCREW PLUG and 0501319149 SCREW PLUG locations.
• Gear slipping under load: Incorrect shim thickness reduces clutch pack clamping force, causing intermittent power loss during excavation or lifting operations.
• Abnormal whining or grinding noise: Excessive axial play from a degraded shim ring allows gear teeth to contact improperly, generating metallic noise from the planetary section.
• Premature bearing failure: Loss of preload forces bearings to operate outside their designed load zone, leading to spalling and debris contamination.

Technical Specifications

Compatibility

This shim ring is primarily used in ZF WG180, WG200, and WG211 series transmissions found in wheel loaders, excavators, and telehandlers. It also applies to certain ZF 4WG-200 and 6WG-200 variants. Always verify the shim thickness requirement using the service manual for your specific transmission model, as multiple shim sizes are available for fine-tuning end play.

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