Dodge ZB 2005 Service Manual page 1070

ZB
A/C COMPRESSOR (Continued)
(3) To duplicate a high-ambient temperature condi-
tions (high head pressure), restrict the air flow
through the A/C condenser. Install a manifold gauge
set or a scan tool to be certain that the discharge
pressure does not exceed 2760 kPa (400 psi).
(4) Check the refrigerant system plumbing for
incorrect routing, rubbing or interference, which can
cause unusual noises. Also check the refrigerant lines
and hoses for kinks or sharp bends that will restrict
refrigerant flow, which can cause noises (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
DESCRIPTION - REFRIGERANT LINES)
(5) If the noise is from opening and closing of the
high pressure relief valve, recover, evacuate and
recharge the refrigerant system (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - STAN-
DARD PROCEDURE - REFRIGERANT SYSTEM
RECOVERY), (Refer to 24 - HEATING & AIR CON-
DITIONING/PLUMBING
DURE - REFRIGERANT SYSTEM EVACUATE) and
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - STANDARD PROCEDURE - REFRIG-
ERANT SYSTEM CHARGE).
(6) If the high pressure relief valve still does not
seat properly, replace the A/C compressor (Refer to 24
- HEATING & AIR CONDITIONING/PLUMBING/
COMPRESSOR-A/C - REMOVAL).
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.
NOTE: The A/C compressor may be removed and
repositioned without disconnecting the refrigerant
lines or discharging the refrigerant system. Dis-
charging is not necessary if servicing the compres-
sor clutch, clutch coil or the engine.
(1) Recover the refrigerant from the refrigerant
system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING - STANDARD PROCEDURE -
REFRIGERANT SYSTEM RECOVERY).
(2) Disconnect and isolate the negative battery
cable.
(3) Remove the serpentine drive belt (Refer to 7 -
COOLING/ACCESSORY
REMOVAL).
(4) Disconnect the wire harness connector from the
A/C compressor clutch coil connector.
- STANDARD PROCE-
DRIVE/BELTS-DRIVE
(5) Remove the bolts that secure the suction and
discharge lines to the A/C compressor (Fig. 5).
(6) Disconnect the suction and discharge lines
from the A/C compressor and remove and discard the
O-ring seals.
(7) Install plugs in, or tape over all of the opened
refrigerant line fittings and the compressor ports.
(8) Raise and support the vehicle.
(9) Remove the four bolts that secure the A/C com-
pressor to the engine and remove the compressor.
Fig. 5 A/C Compressor
1 - SUCTION LINE
2 - BOLT (2)
3 - A/C COMPRESSOR CLUTCH
4 - UPPER MOUNTING BOLT
5 - A/C DISCHARGE LINE
6 - LOWER MOUNTING BOLT (2)
7 - A/C COMPRESSOR
8 - UPPER MOUNTING BOLT
INSTALLATION
NOTE: Be certain to check the refrigerant oil level if
the A/C compressor is being replaced. See Refriger-
ant Oil Level in this group for the procedures. Use
only refrigerant oil of the type recommended for the
A/C compressor in the vehicle.
(1) Position the A/C compressor onto the engine.
(2) Install the four bolts that secure the A/C com-
pressor to the engine. Tighten the bolts to 23 N·m
(17 ft. lbs.).
-
(3) Lower the vehicle.
(4) Remove the tape or plugs from the opened
refrigerant line fittings and compressor ports.
PLUMBING 24 - 41