ZF 0730.109.385 SHIM | OEM Genuine Part

Overview

The ZF 0730.109.385 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 axle bevel gear, ensuring correct gear mesh patterns and preload settings. The SKU 0730.109.385 is a factory-specified thickness component that compensates for manufacturing tolerances, preventing unwanted movement that leads to premature wear. In construction machinery transmissions, this shim directly supports the 5838109012: DIFFERENTIAL and the 2093209023: DIFFERENTIAL assemblies by maintaining proper end-play.

Symptoms of Failure

When the ZF 0730.109.385 shim wears or collapses, three distinct failure modes emerge. First, excessive differential bearing noise during turns occurs as the 0750117075: TAPER ROLLER BEARING loses its preload, causing a low-frequency growl. Second, oil leaks from the axle housing flange develop because the shim’s reduced thickness allows the differential housing to shift, breaking the seal. Third, intermittent gear slipping under load manifests as the ring gear moves out of alignment with the pinion, a condition often misdiagnosed as a failing clutch pack. Fourth, metal debris in the transmission oil filter signals that the shim has fractured, allowing the 5838300626: DIFFERENTIAL HOUSING to contact rotating components.

Technical Specifications

Compatibility

This shim is engineered for ZF WG-series transmissions commonly used in construction machinery. It is a direct fit for the WG180, WG200, and WG220 series power shift transmissions. The 0730.109.385 also applies to ZF’s ERGOFLEX and ECOMIX drivelines found in wheel loaders and telehandlers. Always verify the shim stack height when replacing the 5838300626: DIFFERENTIAL HOUSING or the 0750117075: TAPER ROLLER BEARING to ensure correct preload.

Related Components

Frequently Asked Questions

Q: Can I reuse the ZF 0730.109.385 shim during a differential rebuild?
A: No. This shim is a single-use component because it compresses and work-hardens during initial torque application. Always install a new 0730.109.385 shim when replacing the 0750117075: TAPER ROLLER BEARING or differential housing.

Q: How do I measure the correct shim thickness for my WG200 transmission?
A: Use a depth micrometer to measure the recess depth in the differential housing, then subtract the bearing protrusion. The 0730.109.385 shim is available in 0.05 mm increments; select the thickness that yields 0.08-0.12 mm of bearing preload.

Q: Will a worn shim cause damage to the 5838300721: AXLE BEVEL GEAR?
A: Yes. A collapsed shim allows the bevel gear to shift axially, creating uneven tooth contact that leads to pitting and eventual tooth fracture. Inspect the shim whenever you service the axle bevel gear.