"Cam followers" refers to a type of mechanical component that moves along a cam surface, usually in a circular motion. It helps transfer power from one part of a machine to another, allowing smooth and precise movements. Full definition
Give the car a service first, and make sure it's mechanically sound, including checking that the fuel - pump cam follower has been changed. (evo.co.uk)
I have posted pictures before of cam followers wearing out, but this one takes the cake. (humblemechanic.com)
The valves are controlled by means of cam followers and feature maintenance - free, hydraulic valve clearance compensation. (topspeed.com)