19. EXHAUST EMISSION CONTROL SYSTEM MOVIE SYSTEM SECONDARY AIR CLEANER / AIR INJECTION CUT-OFF VALVE (A.I.C.V.) INSPECTION · The secondary air cleaner must be Inspect the air injection cut-off valve flow assembled and installed properly to using a vacuum pump. If the flow is not avoid dust entering the air cleaner. within the specified values, replace with a · When installing, be careful not to new one. bend or twist the tubes and check for The flow should be at least 30 liter/min proper installation. when a vacuum of 250mm/Hg is applied. · The tube length is very important to The flow should be at least 1.6 liter/min its performance, use the tube of when a vacuum of 320mm/Hg is applied. same specification for replacement. Check each connecting tube for cracks or damage and replace if necessary. 19-3