there are two black plastic push pull, rivet like things you have to pull up amd remove, pry center up and they come out. i usually mark end covers remove the long bolts, i think there are a few more bolts, and pull the end off you have to push the
brushes in to clear as they are spring loaded, remove and replace, i spray electra motive and clean everything, its kinda messy. i have had mine clogg up with brush dust.