This document covers the procedure for mounting an Airmaster sensor-brush assembly to a Lycoming engine and assembly of the dedicated multi-component brush bracket system.
The existence of the starter ring gear in Lycoming engines interferes with the normal position of the slipring behind the spinner backplate. As a result, the slipring is mounted inside the starter ring gear, and a multi-component sensor-brush bracket assembly is required.
It is recommended that installers mount the hub and ring gear assembly to the engine flange and attach the sensor-brush assembly to the brush block cover plate before proceeding.
Sensor-Brush Installation (Lycoming Standard Slipring)
