ZF 0730.109.412 SHIM | OEM Genuine Part

Overview

The ZF 0730.109.412 SHIM is a precision-engineered OEM genuine part designed to establish critical axial clearances within ZF heavy-duty transmission assemblies. This shim sits between the differential housing and the bearing race, ensuring that gear mesh patterns remain within factory tolerances under extreme load conditions. The SKU 0730.109.412 is commonly specified during rebuilds of construction machinery transmissions, where even a 0.1mm deviation can lead to premature wear. By maintaining exact end-play specifications, this shim directly supports the longevity of adjacent components such as the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING.

Symptoms of Failure

When the ZF 0730.109.412 shim wears or is incorrectly selected during assembly, operators may notice distinct failure modes. Excessive axial play in the differential is a primary symptom, often felt as a clunking noise when shifting between forward and reverse. Oil leaks from the differential housing can develop as the shim compresses, altering the seal contact angle. Another common issue is premature gear tooth wear on the 2093209023: DIFFERENTIAL due to misaligned pinion depths. Finally, vibration during low-speed maneuvering in wheel loaders or excavators often points to a degraded shim stack that no longer maintains proper bearing preload.

Technical Specifications

Compatibility

This shim is engineered for ZF powershift transmissions commonly found in construction machinery. It is a direct fit for the ZF WG180 and ZF WG200 series, as well as the ZF 4WG-200 and ZF 5WG-200 variants. The part also applies to certain ZF Ergopower and ZF Ecomat models where differential end-play adjustment is required. Always verify the shim thickness against your service manual; the 0730.109.412 is typically used in the differential bearing preload stack alongside the 5838300626: DIFFERENTIAL HOUSING.

Related Components

Frequently Asked Questions

Q: Can I reuse the ZF 0730.109.412 shim during a rebuild?
A: No. Shims are single-use components because they work-harden and can deform under load. Always install a new OEM shim to maintain proper bearing preload.

Q: How do I know if the 0730.109.412 is the correct thickness for my transmission?
A: Measure the differential housing bore depth and the bearing protrusion. The shim thickness must be selected to achieve 0.05–0.15 mm of end-play. Consult your ZF service manual for the exact calculation.

Q: Will a worn shim cause damage to the taper roller bearing?
A: Yes. Excessive clearance from a collapsed shim leads to brinelling of the bearing race and eventual differential failure. Replace the shim and the 0750117075: TAPER ROLLER BEARING as a set for best results.