ZF 0730.501.314 RETAINING RING for WG200/WG92 | OEM Genuine Part

Overview

The ZF 0730.501.314 RETAINING RING is a precision-engineered snap ring designed to secure internal components within the WG200 and WG92 transmission series. This OEM genuine part functions as a critical axial lock, preventing shaft-mounted assemblies from shifting under load. Installed within the planetary gear set area, the retaining ring ensures that gears, bearings, and clutches remain in their designated positions during high-torque operation. The SKU 0730.501.314 is manufactured to ZF’s exacting tolerances, guaranteeing a secure fit that maintains gear alignment and prevents unwanted movement. When paired with a properly sealed TRANSMISSION HOUSING, this ring contributes to overall drivetrain stability and longevity.

Symptoms of Failure

• Transmission oil leaks near the output shaft: A worn or deformed retaining ring can allow internal components to shift, breaking the seal between the shaft and the HOUSING, leading to fluid seepage.
• Gear slipping under load: When the ring loses its tension, planetary gears may drift out of mesh, causing intermittent power loss during acceleration or hill climbing.
• Unusual metallic rattling from the transmission pan: A fractured retaining ring can produce loose metal fragments that circulate through the oil, creating a distinct grinding noise.
• Hard shifting or delayed engagement: Axial play from a fatigued ring can misalign the RANGE SELECTOR mechanism, resulting in sluggish gear changes.

Technical Specifications

Compatibility

This retaining ring is engineered for ZF WG series transmissions, specifically the WG200 and WG92 models. It is also compatible with the WG180 series when used in the planetary carrier assembly. The part fits both standard and heavy-duty variants of these transmissions, commonly found in municipal trucks, fire apparatus, and construction vehicles. For proper installation, ensure the ring groove in the PERIPHERALS assembly is clean and free of burrs.

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