W m Heater and Air Conditioner Vacuum System How |t Works I check that temperature selector me = ionEase AND eRoNco u DELUXE Hl LD HEATER SYSTEM vAcuuM MOTOR TEST CHART lever is in proper position FUNCTlON 1 TEMPERATURE l VAcuuM MOTORS APPLIED WlTH vAcuuM The heater and air conditioner Vacuum CONTROL LEVE CONTROL LEVER OUTSIDE WATER PNELFLOOR I HEAT-DEFROST V _ I1 port still does not supply RosmoN RoslrioN Ecch VALVE PARIlALl FULL PARTlAL FULL iiliili'Ss We a vacuum - - - at; : . m, , I vacuum actuated push-pull motors replace temperature selector valve OFF coats Temp-d A . i .5 l-Z _ a I the tem eraturs selector valve If less then 10 Inches of vacuum is 62% - 4 53 a 7; n, p t I c . . . VENY l2 d E > 73 7D I the a-port vacuum selector. presen En DErErm cwempr 7 _ s: _ 73 7b operated by the lunction selector CheCk vacuum at engine Warm 5 7b . c r I72 4 a an 7 lever ' It vacuum at engine is less than in vEm Bengt; 4 I a: 6n I 7: 7D I vacuum reservotr inches... imam Damn: Costumes _ s. an 7a 7b I vacuum check valve - repair the engine V522??? tea 4 ea 7 73 7: It vacuum at engine Is Over 10 l CW2 A ' 5" 7a 7b ' leLO Coot-3 Temp-A - 6a 7a 7t: Trouble-Shootln - WE m g Incms - . Coral l l2 4 7 73 TB [1 the outsideretire door or heater ' check SUPP hose to vacuum HEAT C 1930:"? 4 m :5 oc~ em , , e water valve does not operate . . . reserve tank Warmip ' Position temperature selector lever ' CheCk SUDPIV 059 lrom Valwtlm goal; l 2 7 o A , _ at COOL {Ii/3:5 tank to vacuum se ec or DEFGG Com ram 7 _ I let the engine Idle . . WW'5 l - IV c H 12 _ I measure vacuum at outside-recur: or I check m line vacuum check va e 033.; a _ water valve motor "these check out OK . . . DEERosr CoolI-VJ Tampa! I _ _ if there is no vacuum or less than 10 ' search 0' leak 0 blockage '" my vAcuuM LlNE enoww vsuaw RED oRANGE BLUE inches 0' vacuum (Hg) _ . _ vacuum systems coLOR cons now ltsmE) {TOP} (SlDE) I check and repair feed to motor ll vacuum is supplied to motor (over 10 inches Hg) t . , I turn oii vehicle I apply 18 inches at vacuum (Hg) to rEMRREAruRE sELEcmR LEVER motor If motor will not hold vacuum . V , 4* m I replace the motor A rzszAmnz it the outside-realm dOOr or heater :BDNVTJESLSFEED AlC HI~L0 Nu! Dimes! water valve still doesn't operate. . . I check for tree movement at linkage attached to actuating lever I repairer replaeejammed or W T slow-Working linkage NC lON sELEcroR LEVER it vacuum is not being supplied to the component. . . I determine which portot the tempera- n W" W M": M" ture selector valve supplies the vacuum (see chart, next page) position temperature selector lever at COOL I check to see if the penis supplying at least 10 Inches ol vacuum with the engine idling It port is supplying vacuum I check vacuum lead back to component I repair leak ordlsconnecled hose PANEL-~FLOOR SArPARYlAL tron YELLOW SBFuLl lSlDEl RED m cm TXK It port is not supplying vacuum . . . W} I check that supply vacuum is at least 9 10 inches (Hg) I check that supply vacuum is connected to input port 42