ZF 0730.007.755 SHIM | OEM Genuine Part

Overview

The ZF 0730.007.755 SHIM is a precision-engineered OEM genuine component 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 during high-torque operation. The SKU 0730.007.755 is manufactured from hardened steel to resist deformation under extreme loads, making it essential for maintaining drivetrain rigidity in construction machinery such as wheel loaders and graders. Proper installation of this shim directly influences the service life of adjacent components like the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING, as incorrect clearance accelerates wear on both parts.

Symptoms of Failure

• Excessive differential backlash – A worn or collapsed shim 0730.007.755 allows the differential to shift axially, causing a clunking noise during acceleration or deceleration. This is a common search query for “ZF transmission clunking when shifting.”
• Premature bearing failure – When the shim loses its thickness, the taper roller bearing loses preload, leading to overheating and spalling. Operators often search for “taper roller bearing noise ZF WG.”
• Oil contamination from metal debris – As the shim wears, fine steel particles enter the transmission fluid, visible during drain intervals. This symptom is frequently searched as “metal shavings in ZF transmission oil.”
• Intermittent gear slipping under load – Loss of axial control causes the differential to misalign, resulting in momentary power loss when climbing grades. This aligns with long-tail queries like “ZF transmission slips under heavy load.”

Technical Specifications

Compatibility

This shim is primarily used in ZF WG180, WG200, and WG310 series transmissions found in construction machinery. It is also compatible with select ZF 4WG-200 and 5WG-310 power shift transmissions. The 0730.007.755 shim is frequently replaced alongside the 2093209023: DIFFERENTIAL and the 5838300626: DIFFERENTIAL HOUSING during a full differential rebuild. Always verify the shim stack thickness using a dial indicator before final assembly.

Related Components

Frequently Asked Questions

Q: Can I reuse the 0730.007.755 shim during a rebuild?
A: No. ZF recommends replacing all shims during a differential overhaul because the original shim may have work-hardened or suffered microscopic compression, which alters preload specifications.

Q: What torque should I apply to the differential housing bolts when installing this shim?
A: Always refer to the ZF service manual for your specific transmission model. For WG200 series, the typical bolt torque is 120 Nm, but the shim thickness must be verified after torquing to ensure 0.05–0.15 mm of bearing preload.

Q: How do I measure the correct shim thickness for 0730.007.755?
A: Use a depth micrometer to measure the distance between the bearing outer race and the housing face, then subtract the desired preload value. The 0730.007.755 shim is 1.55 mm thick; stack multiple shims if needed, but never exceed 0.20 mm total deviation from factory spec.