1990-96 outside A/C box exploded HVAC diagram with heater core a…

'90-93 Outside A/C Box ('80-89 with A/C similar)
This shows the R-12 box (19A559/19A553), which is different from '94-97 R-134a; and the vacuum reservoir (19A556) changed from sonically-welded to screwed-on (probably in '96).

18504 - Blower (squirrel cage)
18527 - Motor, blower
18A318 - Vacuum Motor, fresh/recirculate door
19A553 - Cover, evaporator core
19A556 - Reservoir, vacuum (HVAC, part of 19A553)
19A563 - Vacuum Check Valve, dual outlet
19A580 - Lever, fresh/recirculate door
19A706 - Resistor, blower motor speed
19A786 - Hose, motor coolilng
19C590 - Housing, fresh/recirculate door
19C802 - Door, fresh/recirculate
19C836 - Accumulator/Drier Assembly
19D607 - Accumulator Support ('80-82 & '94-96/7 only)
19D990 - Orifice tube (blue=R12; red=R134a)
19E561 - Low Pressure Switch (white threads=R12; yellow threads=R134a)

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Owner caption August 2011 · Photo 3686 of 6546