Looking at my c5alive email queries, gearbox removal is always a favourite question.So a link to this topic will be used to make my reply faster (and easier
Having first removed the combined motor & gearbox assembly from the c5, I gently lift the "fingers" using a screwdriver and insert cable ties on their side to keep the fingers raised;
I then grab my pliers/grips and pull the gearbox away from the motor. You must be careful here and pull in a straight line - otherwise you risk damaging the gearbox housing;
The gearbox cogs just lift off the end of the armature.
To further dismantle the assembly, remove the two bolts that secure the fingers to the motor housing ( please note - they are still in place in the photo !) ,and then slide a mallet/hammer along the motor body to ease the fingers off;
Dismantling the Motor assembly is covered in another topic;
http://c5alive.co.uk/forum/index.php?topic=368.0I'm not saying this is the only, or even the best, method to do this - but it works for me. Hope the info helps