800 1000 1200 1400 1600 1800 2000 0 10 20 30 40 50 60 70 80 90 100 ENGINE SPEED [1/min] Z O N E [% ] BELT STICK ZONE ON PULLEYS A/C ALT I/P P/S W/P IP TWIST IP HUB LOAD STICK ZONES SLIP RATES TENSIONER MOVE