. OPERATION EXPLANATION OF COMPONENTS HANDLING CAB WIPER PREVENTING DAMAGE TO WIPER ARM BRACKET 3 - 99 NOTICE When a ngling th e wiper arm (1) to the front , check that the wiper blade is hanging When angling the wiper arm (1) to the front, such as when wiping the glass clea n, if the wiper arm ( 1) is angled with the wipe r blade (2) locked to th e arm ( the bottom o f the blade i s caught on th e arm), abnormal forc e is brough t to bear on th e mounting bracket a nd the bracke t may b reak.