Chrysler PT Cruiser 2001 Service Manual Supplement page 2447

PT
A/C COMPRESSOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . . . 1
COMPRESSOR NOISE. . . . . . . . . . . . . . . . . . . . 1
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
A/C COMPRESSOR
DESCRIPTION
Fig. 1 Compressor
1 - A/C COMPRESSOR
2 - MOUNTING BOLTS
3 - LOWER FRONT STRUT-TO-ENGINE BRACKET
The compressor (Fig. 1) used on this vehicle can be
one of two models, depending upon the transmission
in the vehicle. Vehicles with a manual transmission
use the Nippondenso 10S15 compressor, while vehi-
cles with an automatic transmission use the Nippon-
denso 10S17 unit. These
aluminum swash plate, teflon coated pistons and alu-
minum sleeveless cylinder walls. A high pressure cut
out switch is located on the back cover of the com-
pressor.
2001 PT CRUISER
HEATING & AIR CONDITIONING
PLUMBING
TABLE OF CONTENTS
page
compressors use
HEATING & AIR CONDITIONING
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SUCTION LINE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
The compressor is secured to the lower front strut-
to-engine bracket with four screws. The lower front
strut-to-engine bracket is located on the lower, for-
ward skirt of the engine block which is located in the
right front corner of the engine compartment.
The compressor cannot be repaired. If faulty or
damaged, the entire compressor unit must be
replaced. The compressor clutch, pulley, clutch coil
and the high pressure cut out switch are available
for service replacement.
OPERATION
The compressor is driven by the engine through an
electric clutch, drive pulley and belt arrangement.
The compressor is lubricated by refrigerant oil that is
circulated throughout the refrigerant system with the
refrigerant.
The compressor draws in low-pressure refrigerant
vapor from the evaporator through its suction port. It
then compresses the refrigerant into a high-pressure,
high-temperature refrigerant vapor. The compressor
pumps high-pressure refrigerant vapor to the con-
denser through the compressor discharge port.
DIAGNOSIS AND TESTING - COMPRESSOR
NOISE
Excessive noise while the A/C is being used, can be
caused by loose mounts, loose clutch, or high operat-
ing pressure. Verify compressor drive belt condition,
proper refrigerant charge and head pressure before
compressor repair is performed.
If the A/C drive belt slips at initial start-up, it does
not necessarily mean the compressor has failed.
an
With the close tolerances of a compressor it is pos-
sible to experience a temporary lockup. The longer
the A/C system is inactive, the more likely the condi-
tion to occur.
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