How to create a mechanic colonist? (RimWorld)

Hello. Who can tell me what I'm doing wrong? :
1) Broke an ancient mech, a transmitter fell out of it
2) Studied it and summoned an ancient mech shuttle
3) Picked up a mechlink from the body of a dead mekhanite
4) Chose a pawn and gave it a mech link
5) A small helper mech arrived, which I can’t control in any way , as a result, after 1 day he went wild and after 3 fell into the sunset. I also can’t advance in the study in “Technologies”, writes: “Unavailable: Requires a colonist-mechanic”.