ZF 0730.109.173 SHIM | OEM Genuine Part

Overview

The ZF 0730.109.173 SHIM is a precision-engineered OEM genuine part designed to maintain critical axial clearances within ZF heavy-duty transmissions. This thin, hardened steel component sits between the 4108101127: HOUSING and the planetary gear sets, ensuring proper preload and alignment of rotating assemblies. By compensating for manufacturing tolerances, the SKU 0730.109.173 prevents metal-to-metal contact and extends transmission life. Commonly found in construction machinery like wheel loaders and graders, this shim is essential for maintaining gear mesh accuracy and load distribution across the drivetrain.

Symptoms of Failure

• Excessive gear backlash or “clunking” during direction changes – When the shim wears or compresses beyond spec, axial play increases, causing delayed engagement and audible impacts in the transmission.
• Premature bearing wear and whining noise – Incorrect shim thickness leads to improper preload on the 4108301304: BEARING COVER, resulting in tapered roller bearing fatigue and high-pitched operational sounds.
• Oil leaks at housing interfaces – A collapsed shim can distort the 4108201277: HOUSING seal surface, allowing transmission fluid to escape past the 4108306173: GASKET.
• Intermittent gear slipping under load – Loss of axial control reduces clutch pack clamping force, causing torque loss during heavy excavation or grading operations.

Technical Specifications

Compatibility

This shim is specifically engineered for ZF WG-series powershift transmissions used in construction machinery. It is a direct fit for the following models:

• ZF WG180 (all variants)
• ZF WG200 (series 2 and 3)
• ZF WG210 (early production)
• ZF 4WG-200 (torque converter models)

Always verify the shim stack height during rebuild. This part is typically used in conjunction with the 4108102055: INPUT shaft assembly and the 4108302191: PLANET CARRIER to achieve factory-specified endplay.

Related Components