Chrysler PT Cruiser 2001 Service Manual Supplement page 2449

PT
A/C COMPRESSOR (Continued)
INSTALLATION
The compressor may be removed from the mount-
ing bracket and repositioned without disconnecting
the refrigerant lines or discharging the refrigerant
system. Discharging is not necessary if servicing the
compressor clutch or clutch coil, the engine, the cyl-
inder head or the generator.
WARNING: REVIEW THE WARNINGS AND CAU-
TIONS IN THE FRONT OF THIS GROUP BEFORE
PERFORMING THE FOLLOWING OPERATION.
NOTE: If a replacement compressor is being
installed, be certain to check the refrigerant oil
level. See Refrigerant Oil Level in this group for the
procedures. Use only refrigerant oil of the type rec-
ommended for the compressor in the vehicle.
(1) Position the compressor into the engine com-
partment.
(2) Install and tighten the four screws that secure
the compressor to the lower front strut-to-engine
bracket. Tighten the screws to 28.3 N·m (250 in. lbs.).
(3) Remove the tape or plugs from the compressor
discharge port and the refrigerant line fitting of the
discharge line.
(4) Lubricate a new rubber O-ring seal with clean
refrigerant oil and install it on the refrigerant line
fitting of the discharge line. 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
recommended for the compressor in the vehicle.
(5) Reconnect the discharge line fitting to the com-
pressor discharge port.
(6) Install and tighten the screw that secures the
discharge line fitting to the compressor discharge
port. Tighten the screw to 12.2 N·m (108 in. lbs.).
(7) Remove the tape or plugs from the compressor
suction port and the refrigerant line fitting of the
suction line.
(8) Lubricate a new rubber O-ring seal with clean
refrigerant oil and install it on the refrigerant line
fitting of the suction line. 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
recommended for the compressor in the vehicle.
(9) Reconnect the suction line fitting to the com-
pressor suction port.
(10) Install and tighten the screw that secures the
suction line fitting to the compressor suction port.
Tighten the screw to 12.2 N·m (108 in. lbs.).
(11) Reconnect the engine wire harness connectors
to the compressor clutch coil connector and the high
pressure cut out switch.
(12) Reinstall the serpentine drive belt. Refer to
Cooling System for the proper procedures.
2001 PT CRUISER
HEATING & AIR CONDITIONING
(13) Lower the vehicle.
(14) Reconnect the battery negative cable.
(15) Evacuate the refrigerant system. Refer to
Refrigerant System Evacuate in this group for the
proper procedures.
(16) Charge the refrigerant system. Refer to
Refrigerant System Charge in this group for the
proper procedures.
SUCTION LINE
DESCRIPTION
Fig. 4 A/C Refrigerant Lines - Compressor
1 - LIQUID LINE
2 - SUCTION LINE
3 - COMPRESSOR
4 - DISCHARGE LINE
5 - HIGH SIDE SERVICE PORT
The refrigerant lines and hoses (Fig. 4) , (Fig. 5)
and (Fig. 6) are used to carry the refrigerant between
the various air conditioning system components. A
barrier hose design with a nylon tube, which is sand-
wiched between rubber layers, is used for the R-134a
air conditioning system on this vehicle. This nylon
tube helps to further contain the R-134a refrigerant,
which has a smaller molecular structure than R-12
refrigerant. The ends of the refrigerant hoses are
made from lightweight aluminum or steel, and com-
monly use braze-less fittings.
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