ZF 0630.004.288 SHIM RING | OEM Genuine Part

Overview

The ZF 0630.004.288 SHIM RING is a precision-engineered OEM genuine component designed to establish critical axial clearances within ZF construction machinery transmissions. This hardened steel shim ring sits between the bearing cover and the planetary gear set, ensuring correct preload and alignment of rotating assemblies. The SKU 0630.004.288 is a factory-specified thickness variant used to fine-tune end-play during transmission rebuilds or repairs. Without this shim ring, gear mesh geometry shifts, leading to accelerated wear on adjacent components such as the 4108101057 HOUSING and the 4108201177 HOUSING.

Symptoms of Failure

• Transmission gear slipping under load – When the shim ring wears or compresses beyond tolerance, axial play increases, causing gears to lose positive engagement during heavy digging or lifting operations.
• Metallic grinding noise from the transmission housing – A worn 0630.004.288 allows the planetary carrier to contact the 4108301304 BEARING COVER, producing a distinct scraping sound at low RPM.
• Oil leaks near the output shaft seal area – Excessive end float from a collapsed shim ring distorts the seal bore, leading to fluid seepage past the 0636302056 SCREW PLUG and adjacent gaskets.
• Vibration in the driveline during gear changes – Loss of shim ring thickness creates uneven bearing loading, transmitting vibration through the transmission case and into the chassis.

Technical Specifications

Compatibility

This shim ring is engineered for ZF WG series transmissions commonly used in wheel loaders, excavators, and telehandlers. It directly fits the WG180, WG200, and WG210 models. It also appears in select ZF 4WG-200 and ZF 5WG-210 power shift transmissions. Always verify the existing shim stack thickness before installation, as multiple thickness variants (0.30 mm to 1.00 mm) are available for the same bore.

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