A/C Suction Hose/Line

SUCTION LINE
The suction line is the large line that connects to the expansion valve and goes to the compressor. It also has a small line that goes to the filter/drier. The suction line uses a gasket on the expansion valve side and rubber O-rings on all other connections.

There are no serviceable parts on the suction line other than the rubber O-rings and expansion valve gasket. If the line is found to be leaking or is damaged it must be replaced as an assembly.

The refrigerant lines used for this vehicle are common between the two optional engines in order to reduce complexity The following refrigerant lines are available for service replacement on this vehicle:

Fig.33 A/C Refrigerant Lines - Compressor:

- Discharge line - The discharge line is a flexible hose type line that is connected from the discharge port of the compressor to the inlet (upper fitting) of the condenser. It has no serviceable parts except the rubber O-ring seals used on the fittings at each end of the line. If the discharge line is damaged or faulty, it must be replaced.
- Liquid line - The liquid line is a flexible hose type line that is connected between the outlet (lower fitting) of the condenser and the mid-line connector block of the suction and liquid line assembly. The liquid line also contains the variable orifice valve. It has no serviceable parts except the rubber O-ring seals used on the fittings at each end of the line. If the liquid line or the variable orifice valve are damaged or faulty, the liquid line unit must be replaced.
- Suction line - The suction line is a flexible hose type line that is connected between the mid-line connector block of the suction and liquid line assembly and the suction port of the compressor. It has no serviceable parts except the rubber O-ring seals used on the fittings at each end of the line. If the suction line is damaged or faulty it must be replaced.

Fig.34 A/C Service Ports:

- Suction and liquid line assembly - The suction and liquid line assembly is a formed tubing type line assembly that includes the mid-line connector block, a connector block for the evaporator, inlet and outlet line fittings for the accumulator and both A/C service ports. The A/C service port caps, the A/C service port valve cores, the gasket used to seal the connector block at the evaporator and the rubber O-ring seals for the line fittings at the accumulator are all available for service replacement. If any other part of the suction and liquid line assembly is damaged or faulty the assembly must be replaced.

High pressures are produced in the refrigerant system when the air conditioning compressor is operating. Extreme care must be exercised to make sure that each of the refrigerant line connections is pressure-tight and leak free. It is a good practice to inspect all flexible hose refrigerant lines at least once a year to make sure they are in good condition and properly routed.