I was reading the SDS CDI installation manual.
Be sure to remove any parts which are not positively held in place once the mags are removed. If these come loose inside the engine, severe damage or complete engine failure could result! If you’re installing a single coil pack, remove the right magneto and any gears or bearings which rely on the magneto to hold them in place
When replacing both mags, you need to again remove any gears, drive couplings or bearings which are normally held in place by the mag. Lycomings may be fitted with various different mag drives and parts so you need to understand what to remove.
I have a O-360-A1A (180HP). Besides removing magneto and gear/coupler (attached to Mag), installing cover, what else do I need to do? Can anyone explain.
Accessory drive has crank shaft gear, cam gear, two idlers. These drive two mags, one prop gov and vacuum pump. Oil pump is direct drive off of crank. I assume the accessory drive gears don't rely on the magnetos to be present for the Lycoming engine's. Just checking... the instructions scared me...
Raleigh, NC Area
RV-4, RV-7, ATP, CFII, MEI, 737/757/767
Last edited by gmcjetpilot : 11-15-2018 at 02:07 AM.