F2 EXHAUST EMISSION CONTROL SYSTEMS i i 4 4 g EE Q Faeiee 5 I if J E f Q 5 ef n SSSO nn ee M ee eeee In r S X2 x V 7 1 M st ze id t I I 0 O Q I Pi o Q 3 14021 FIG F2 3 COLD AIR DOOR OPEN IiUi i f 3 B S 3 Air Cleaner 10 Control Damper 4 Sensor 11 Air Inlet 5 Temp Sensing Spring 12 Vacuum Chamber 6 Air Bleed Valve 13 Snorkel Tube 7 Hot Air Pipe a Give the system a general check as follows 1 Start test with engines cold air cleaner at a O O l Check all hoses for proper hook up Check tentperiturc belew 85 F 29 It th for kink d plugged OI damaged hoses Ilgll 1 BS b 1 l 1Ill C 1 1lZ USE 3 OW it to COO 2 with En ine Off make Sure Cold air door is 2 Observe the cold a1r door before start1ng the Wide Opin engine it should be wide open 3 Start the engine and allow it to idle Im 3 with engine Yunnlng eneek epenetlen ef VeC mediately after starting the engine the cold uum motor by connecting a test hose directly an deer snnnld close from intake manifold to vacuum motor Cold 4 AS the engine warms up the cold an den air door should close If door fails to close Should start to Open and the nn cleaner determine if motor linkage is properly con should become Wann to the nnnd nected to door or if a bind is present if link 5 The System is Operating normally as de nge is SetiSteetei Y then Veenntn meter must scribed above If the air cleaner fails to be FePleeed operate as above or if correct operation of V b Give the system a quick operational check as the air cleaner is still in doubt proceed to follows the thermometer check 152