Futaba FUAS4114 S3150 Spare Gear Set  [FUAS4114]

S3150 service gear description

This Futaba FUAS4114 spare gear set is supplied as a maintenance pack for servos carrying the S3150 designation, intended to replace worn internal gears in hobby servos. The notes below cover checking compatibility, simple installation steps, and the effect of gear renewal on servo reliability.

Compatibility and purpose: indicated for S3150 Futaba servos and cross-referenced to AS4114 and EBS3275, the set replaces damaged gears to restore smooth movement and positional accuracy for model control systems.

Installation notes: remove the servo from its mount and record the internal assembly and bearing positions before removing parts, ensuring correct reassembly. After installing new gears check mesh and endplay; incorrect settings can cause noise and rapid wear. Apply lubricant sparingly and only use products suitable for small servo gears.

Tuning role: changing out aged gears can reduce backlash and mechanical jitter, improving overall control fidelity. For a full assessment, inspect splines and bearings and verify any transmitter or controller settings that may influence servo performance.

A service spare intended to keep S3150-designated servos operating smoothly and repeatably when worn gears are replaced.