ZF 0730.063.290 RING | OEM Genuine Part

Overview

The ZF 0730.063.290 RING is an OEM genuine precision-machined component designed for critical sealing and load distribution within heavy-duty ZF powershift transmissions. This ring sits between the rotating clutch drum and the stationary housing assembly, acting as a dynamic seal to maintain hydraulic pressure during gear engagement. As an integral part of the transmission’s hydraulic circuit, the 0730.063.290 ensures consistent oil flow to the clutch packs, preventing pressure loss that can lead to erratic shifting. The SKU 0730.063.290 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in construction machinery transmissions such as those found in loaders, graders, and dump trucks.

Symptoms of Failure

When the ZF 0730.063.290 RING begins to wear, operators often notice delayed gear engagement or a soft shift feel, particularly when the transmission is under load. Another common symptom is internal hydraulic oil leakage, which manifests as a gradual drop in transmission fluid level without external drips. You may also experience intermittent gear slipping during uphill operation or when the machine is working at high torque. Finally, a worn ring can cause erratic clutch modulation, leading to harsh or jerky shifts that reduce operator comfort and driveline life.

Technical Specifications

Compatibility

This ring is a direct fit for ZF WG180, WG200, and WG211 series transmissions commonly used in construction machinery. It also applies to the ZF 4WG-200 and 6WG-200 variants found in wheel loaders and telehandlers. For optimal sealing integrity, always replace the ring alongside the 4143101009 HOUSING and the 4143301025 HOUSING to ensure proper alignment. Additionally, install a new 0634313603 O-RING and the 4475280018 SCREW PLUG to prevent secondary leakage paths during reassembly.

Related Components