Corbin Russwin 598F72 Lever Spring Cartridge (Old Style) - CL3800 Series

The Corbin Russwin 598F72 is the Old Style Lever Spring Cartridge originally designed for the first-generation CL3800 Series Grade 1 Cylindrical Lever Locks. This internal module was responsible for providing the heavy-duty tension required to keep the lever handles horizontal and prevent "lever sag."

NOTICE: This specific part number (598F72) has been discontinued by the manufacturer and is no longer in production. This page serves as a technical reference for facility managers and locksmiths identifying legacy hardware during building audits or maintenance cycles.

Technical Reference & Legacy Features

• Compatibility: Engineered exclusively for the "Old Style" CL3800 cylindrical locks manufactured prior to the mid-2000s design transition.
• Function: Contained the high-torque coil springs and hub mechanics that facilitated the return-to-center motion of the exterior and interior levers.
• Identification: Recognized by its specific cartridge housing dimensions, which differ from the current "New Style" (CL3300/CL3500/Modern CL3800) spring cages.
• Common Failure Mode: Over decades of use, the internal spring steel in the 598F72 would fatigue or snap, resulting in a drooping handle that fails to retract the latchbolt.

Troubleshooting Legacy CL3800 Locks

If you have identified that your Corbin Russwin 598F72 cartridge has failed, please note that the modern "New Style" cartridges are generally not backward compatible with the original "Old Style" chassis without significant modification or a complete trim upgrade.

For facilities looking to maintain the safety and aesthetic of their openings, we recommend evaluating a full lockset upgrade to the current CL3800 Series. Modern versions offer enhanced vandal resistance and simplified maintenance components that are readily available.

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