ZF 0730.109.995 SHIM | OEM Genuine Part

Overview

Precision shimming is critical for maintaining correct gear mesh and bearing preload within ZF heavy-duty transmissions. The ZF 0730.109.995 SHIM is an OEM genuine part designed to occupy a precise axial space within the differential assembly of construction machinery transmissions. This shim ensures that rotating components remain within factory tolerances, preventing excessive axial play and ensuring optimal load distribution. The SKU 0730.109.995 is a consumable adjustment component that must be selected with care during rebuilds or when replacing adjacent wear items such as the 5838109012: DIFFERENTIAL assembly.

Symptoms of Failure

When the ZF 0730.109.995 shim wears or is incorrectly sized, several distinct operational issues emerge. Excessive differential gear backlash is a primary symptom, often felt as a clunking noise during direction changes or under load. Premature bearing wear occurs as the 0750117075: TAPER ROLLER BEARING loses its correct preload, leading to rough rotation and metal contamination in the oil. Oil seepage from the axle housing seals can develop due to increased internal movement and vibration. Finally, erratic wheel speed or uneven tire wear on construction machinery may indicate that the differential carrier has shifted out of its intended position due to shim degradation.

Technical Specifications

Compatibility

This shim is engineered for use in ZF powershift transmissions commonly found in wheel loaders and graders. It is a standard adjustment component within the WG180, WG200, and WG310 series. The shim sits between the differential carrier and the 5838300626: DIFFERENTIAL HOUSING to set the correct depth for the ring gear. It also interfaces directly with the 2093209023: DIFFERENTIAL unit. Always verify the required shim stack thickness using the factory service manual for your specific transmission serial number.

Related Components

Frequently Asked Questions

Q: How do I know if I need the 0730.109.995 shim versus a different thickness?
A: You must measure the existing shim stack and the differential housing depth using a dial indicator. The correct shim thickness is calculated to achieve 0.10–0.25 mm of bearing preload on the taper roller bearing. If the original shim is crushed or worn, replace it with the same nominal thickness as a starting point.

Q: Can I reuse this shim during a rebuild?
A: No. ZF recommends replacing all shims (part 0730.109.995) whenever the differential is disassembled. The shim compresses slightly during service and may not provide accurate preload if reused, leading to premature failure of the differential and bearings.

Q: Is this shim compatible with the WG180 transmission?
A: Yes, the 0730.109.995 shim is a standard component in the WG180, WG200, and WG310 series. However, always verify the part number against your transmission’s parts manual, as some variants may use a different shim diameter.