ZF 0730.107.520 SHIM | OEM Genuine Part

Overview

The ZF 0730.107.520 SHIM is a precision-engineered adjustment component designed to establish critical axial clearances within heavy-duty ZF transmissions used in construction machinery. This OEM genuine shim sits between the differential housing and bearing races, allowing technicians to fine-tune gear mesh and preload during assembly or rebuild. The SKU 0730.107.520 is specifically manufactured to ZF’s original tolerances, ensuring that the differential assembly maintains proper alignment under extreme loads. When paired with a 2093109029 DIFFERENTIAL, this shim prevents lateral movement that could lead to premature wear on adjacent components.

Symptoms of Failure

When the ZF 0730.107.520 SHIM becomes worn or compressed beyond specification, operators will notice distinct mechanical issues. Excessive differential backlash is the most common symptom, often felt as a clunking sensation when shifting between forward and reverse. Abnormal gear whine from the transmission housing indicates that the shim has lost its thickness, allowing the ring and pinion to misalign. Premature bearing failure occurs because the 0750117075 TAPER ROLLER BEARING loses its preload, causing radial play. In severe cases, intermittent gear slipping under load may be reported, particularly when the machine is working on inclines or pushing heavy material.

Technical Specifications

Compatibility

This shim is a standard adjustment element used across multiple ZF power-shift transmission families. It is directly compatible with the WG180, WG200, and WG210 series transmissions commonly found in wheel loaders, telehandlers, and graders. The 0730.107.520 also fits certain 4WG-200 and 6WG-200 variants where the differential assembly requires fine axial shimming. Always verify the stack height when installing alongside a 2093209094 DIFFERENTIAL or a 2093309078 DIFF.HOUSING to ensure correct preload.

Frequently Asked Questions

Q: How do I know if I need a thicker or thinner shim?
A: Measure the backlash at the ring gear using a dial indicator. If the backlash exceeds 0.30 mm, you likely need a thicker shim (or an additional 0730.107.520). If the gears bind or the bearing feels tight, reduce the shim stack thickness.

Q: Can I reuse this shim after disassembly?
A: No. ZF genuine shims are designed for single-use installation. The material work-hardens during initial torque application, and reusing it will not provide accurate preload. Always install a new 0730.107.520 during rebuilds.

Q: Does this shim require lubrication during installation?
A: Yes. Apply a thin film of ZF-approved gear oil (SAE 80W-90) to both faces before assembly to prevent galling against the bearing race or differential housing.

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