1970 Pontiac Firebird A/C Hose Routing Diagram - Receiver-Dehydrator & POA Valve

This is a scanned page from a factory assembly manual / parts illustration showing the air conditioning refrigerant hose and line routing at the front of an engine compartment, uploaded to a 1970 Pontiac Firebird gallery. The exploded-view schematic depicts the A/C system components: the receiver-dehydrator mounted beside the radiator, the inlet tube assembly, fitting assemblies, hose routing over the engine, heater hoses, the expansion valve (shown installed at 60° from vertical per a reference detail), and the P.O.A.S.T. valve. A parts legend lists callout numbers with GM part numbers: 9419303 screw (3), 3973725 clamp (4), 3917385 strap (5), 8526398 O-ring gasket (6), and 3140600 O-ring gasket (7). Service fill specifications are given as refrigerant oil charge of .0063 quarts (spec code 114) and refrigerant charge of 3.25 lbs (spec code 250). Hand-drawn arrows mark two attachment/routing points of interest. A reader can learn correct A/C hose routing, clamp and strap locations, O-ring placement at fittings, the expansion valve mounting angle, and the system's refrigerant and oil capacities.