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JR
SERVICE PORT VALVE CORE (Continued)
NOTE: The protective cap helps aid in service port
sealing and helps protects the refrigerant system
from contamination. Remember to always reinstall
the protective cap onto the service port when refrig-
erant system service is complete.
(6) Install the protective cap onto the service port.
SUCTION LINE
DESCRIPTION
The suction line (Fig. 31) is the refrigerant line
that goes from the A/C expansion valve to the A/C
compressor. The low side service port is integral to
the suction line.
CAUTION: Use only O-ring seals specified for the
vehicle. Failure to use correct O-ring seal will cause
the refrigerant system connection to leak.
The suction line has no serviceable parts except
the rubber O-ring seals, the service port valve core
and it's protective cap. The O-ring seals used on the
connections are made from a special type of rubber
not affected by R-134a refrigerant. The O-ring seals
must be replaced whenever the suction line is
removed and installed.
If the suction line is found to be leaking or is dam-
aged, it must be replaced.
REMOVAL
WARNING: Refer to the applicable warnings and
cautions for this system before performing the fol-
lowing operation (Refer to 24 - HEATING & AIR
CONDITIONING/PLUMBING - WARNINGS) and (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMBING -
CAUTIONS). Failure to follow the warnings and cau-
tions could result in possible personal injury or
death.
(1) Disconnect and isolate the negative battery
cable.
(2) Recover the refrigerant from the refrigerant
system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING - STANDARD PROCEDURE -
REFRIGERANT SYSTEM RECOVERY).
(3) Remove the bolt that secures the suction line to
the A/C compressor (Fig. 32).
(4) Disconnect the suction line from the A/C com-
pressor and remove and discard the O-ring seal.
(5) Install plugs in, or tape over the suction line
fitting and the compressor port.
(6) Remove the bolt that secures the refrigerant
line retainer bracket to the right shock tower.
Fig. 31 Liquid Line - Typical
1 - CONDENSER FITTING
2 - LIQUID LINE
3 - RECEIVER/DRIER
4 - HIGH SIDE SERVICE PORT
5 - MOUNTING BRACKET
6 - INSULATOR (2)
7 - RETAINER BRACKET
8 - TAPPING PLATE
9 - LOW SIDE SERVICE PORT
10 - A/C SUCTION LINE
11 - SUCTION LINE FITTING
(7) Remove the suction line from the refrigerant
line retainer bracket.
(8) Remove the nut that secures the refrigerant
line tapping plate to the A/C expansion valve (Fig.
33).
(9) Disconnect the suction line and the liquid line
from the A/C expansion valve and remove and dis-
card the O-ring seals.
(10) Install plugs in, or tape over the suction and
liquid line fittings and both expansion valve ports.
(11) Remove the suction line from the engine com-
partment.
INSTALLATION
(1) Position the suction line into the engine com-
partment.
(2) Remove the tape or plugs from the suction and
liquid line fittings and both expansion valve ports.
(3) Lubricate new rubber O-ring seals with clean
refrigerant oil and install them on the liquid and suc-
tion line fittings. Use only the specified O-rings as
they are made of a special material for the R-134a
system. Use only refrigerant oil of the type recom-
mended for the A/C compressor in the vehicle.
PLUMBING
24 - 81
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