14 SECTION 180 1973 79 TRUCK SERIES 100 500 YEAR l MODEL RESTRICTIONS PART NUMBER DESCRIPTION TY i 18578 Sl I IEH ASSY AA Cont d M 74 I7E1OO BOO A A integral A Cr C9UZ 19986 A YHA89Amain evaporator 1 l N Erom Ser S40 001 73174 EIOO BOO A A o yl Aintegral D3UZ 18578AA Blower tempo Includes Bowden 1 AIC Not replaced cab eA48 long i I74i E1OO 3QO A A In cyl Aau heater 1 73 74 E100 300 A A 8 cyl integral A C D3UZ 18578 B Blower temp AincIUdes Bowden 1 I cabIeA58 long 73 74 I E100 BOO A A 8 cyl Aao heat A 1 73178 I F100l35O DBAZ 19986 A YH 2Aheater or integral A C 1 I Before Ser CA0 001 751 1 EIOO 350 A A w main heater 1 land main A C 7e1 I F100 350 A A DSAZ 19986 A YHAZGA 1 I Frorn eLCA0 001 73 Eloo 350 A A I ollrAlnA D1RY 19986 A 1 I A C dealer installed 731 I F100 250 A A builtin A C 1 dealer mstalled nw V50Ol8I cm 18578 A 1 18 Q PLATE BLOWER MOTOR MOUNTING 751 E100 350 A A main or aux heater D5UZ 18581 A 1 I F100 350 D3TZ 18581 A 1 44 7 l F500 D1TZ 18581AA 1 731 F100 250 A A bo1ltAin A CA D4TZ 18581AA 1 I dealer installed 75l I E100 350 A A bollt in AIC 1 l dealer installed 18583 GASKET AIR CONDITIONER BLOWER MOTOR MOUNTING 751 EIOO 350 A A main or aux EOBZ 18583AA 2 4 73 FIOO 250 A A nl1lltAln A C D4TZ 18583 A 1 I Dealer installed 75 l l E100 350 A A bolltAIn A C 1 s sr 1 5 4 4 Y l 14 731 I P100 250 A A bolltAln A C7 D4TZ 18583AA 1 I dealer installed 75 E100 350 A A built in A C 1 dealer installed 18A586 WIRING ASSY HEATER SWITCH TO BLOWER MOTOR Unless listed below improvise from bulk wire 14296 18591 RESISTOR AS HEATER SWITCH TO BLOWER MOTOR A so refer to Gggp 19A706 73l I F100 350 A A heater C9AZ 18591 A 1 731 F500 B1 751 l E100 350 A A w heater 1 18593 HOUSING HEATER BLOWER MOTOR 174 EIOO 3 QQ DBUL 18593 A EconornyAnot g aeed M 1 73174 E100 300 D3UZ 18593AB HlA or orAnot re laeedle B2 1 f 18A594 A RETAINER AI RINLET DUCT A f T3 I F100 350 A A lnregral AIC or I D3TZ 18A594AA I 1 Hi1Low vent s stem V18 Li 4 GASI ETj lEATER CORE TUBE 73 F100 350 I D3TZ 185 A I 1 E El A 59 QA l 1 I QQI CASE 75 I E100 350 A A heater D5UZ 18A596AA I 1 185951111 B ZE w 1 T 473174 E1OO BOQA A w adgjgater C5TZ 18598AA Blower switchAnot replaced 1 EQIBL I1E Q L I E 52 EA I Blew SWIM