A/C System Components (late R-12 system shown)
Separate suction & discharge hoses were used until ~'92. Mid-years (~'86-90) used square-drive shutoff valves at the compressor ports. Early models ('80~84) used an automatic shutoff valve & filter in the connection between the condenser & the condenser-to-evaporator hose. '94-96 R-134a systems use an all-Aluminum hard condenser-to-evaporator line, narrower spacing on the tubes of a slightly-smaller evaporator, and a parallel-flow condenser with rubber air flaps along each side of the grill. R-134a service ports use rubber balls (which are easily cut) instead of Schraeder valves; the conversion fittings are
F3AZ-19E762-A &
F3AZ-19E762-B.
The low pressure switch screws onto an automatic valve on the accumulator, and the threads are different for each refrigerant.
R-134a models have a hi-press. cutout switch on the discharge hose.
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![08parts.jpg A/C System Components (late R-12 system shown)
Separate suction & discharge hoses were used until ~'92. Mid-years (~'86-90) used square-drive shutoff valves at the compressor ports. Early models ('80~84) used an automatic shutoff valve & filter in the connection between the condenser & the condenser-to-evaporator hose. '94-96 R-134a systems use an all-Aluminum hard condenser-to-evaporator line, narrower spacing on the tubes of a slightly-smaller evaporator, and a parallel-flow condenser with rubber air flaps along each side of the grill. R-134a service ports use rubber balls (which are easily cut) instead of Schraeder valves; the conversion fittings are [url=https://www.amazon.com/dp/B01G2MI4A2/]F3AZ-19E762-A[/url] & [url=https://www.amazon.com/dp/B000O09PDY/]F3AZ-19E762-B[/url].
The low pressure switch screws onto an automatic valve on the accumulator, and the threads are different for each refrigerant.
R-134a models have a hi-press. cutout switch on the discharge hose.
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