Run the chair up and down the staircase rail five to six times. Inspect the gear rack and rail for any signs of debris such as hair, dust or paint chips.
Vacuum the rack and rail to remove any debris. You can also use a hand-held brush to sweep away any debris from the rack and rail.
Use white lithium grease to lubricate the stair lift's gear rack teeth. The grease comes in a bottle with an attached nozzle that releases the required amount when the bottle is depressed. Stick the nozzle against the gear rack teeth and squeeze the bottle. Apply a light coating to all the gear rack teeth. Only lubricate the gear rack teeth of a Bruno stair lift that has nylon wheels. If the Bruno stair lift has steel wheels, lubricate the gear rack teeth and the entire rail of the system.
Lubricate any of the lift's belts that look or feel dry. Apply a light coating of the lithium grease across the belt's surface.