. OPERATION EXPLANATION OF COMPONENTS HANDLING CAB WIPER PREVENTING DAMAGE TO WIPER ARM BRACKET the wiper arm to the front, check that the wiper blade is hanging free. 3 - 89 NOTIC When angling When angling the wiper arm t o the front, such as when wiping the glass clean, if the wiper arm i s angled with the wiper blade locked to the arm (the bottom of the b lade is caught on the arm) , abnormal force i may b