Chrysler New Yorker. Manual — part 335
INSTALLATION
(1) Align pin in back of field coil with hole in com-
pressor end housing, and position field coil into place.
Make sure that lead wires are properly routed, and
fasten the diode and coil wire bracket with retaining
screw.
(2) Install field coil retaining snap ring with Snap
Ring Pliers (C- 4574). Press snap ring to make sure
it is properly seated in the groove.
NOTE: The bevel side of the snap ring must be out-
ward. Also both eyelets must be to the right or left
of the pin on the compressor.
CAUTION: If snap ring is not fully seated it will
vibrate out, resulting in a clutch failure and severe
damage to the front face of the compressor.
Do not mar the pulley frictional surface.
(3) Install pulley assembly to compressor. If neces-
sary, tap gently with a block of wood on the friction
surface (Fig. 21).
(4) Install pulley assembly retaining snap ring
(bevel side outward) with Snap Ring Pliers (C-4574).
Fig. 17 Compressor Shaft Bolt and Clutch Plate
Fig. 18 Clutch Plate and Shim(s)
Fig. 19 Removing Pulley Snap Ring
Fig. 20 Clutch Coil Snap Ring
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HEATING AND AIR CONDITIONING
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REMOVAL AND INSTALLATION (Continued)
Press the snap ring to make sure it is properly
seated in the groove.
NOTE: The bevel side of the snap ring must be fac-
ing outward.
(5) If the original front plate assembly and pulley
assembly are to be reused, the old shim(s) can be
used. If not, place a trial stack of shims, 2.54 mm
(0.10 in.) thick, on the shaft against the shoulder.
(6) Install front plate assembly onto shaft.
(7) If installing a new front plate and/or pulley
assembly, the gap between front plate and pulley face
must be checked. Use the following procedure:
(a) Attach a dial indicator to front plate so that
movement of the plate can be measured.
(b) With the dial indicator zeroed on the front
plate, energize the clutch and record the amount of
movement.
(c) The readings should be 0.35 to 0.65 mm
(0.014 to 0.026 in.). If proper reading is not
obtained, add or subtract shims until desired read-
ing is obtained.
(8)
Install compressor shaft bolt. Tighten to 17.5
62 N·m (155 620 in. lbs.).
NOTE: Shims may compress after tightening shaft
nut. Check air gap in four or more places to verify if
air gap is still correct. Spin pulley for final check.
CLUTCH BREAK-IN
After new clutch installation, cycle the A/C clutch
20 times (5 seconds ON and 5 seconds OFF). During
this procedure, set the system to the A/C mode,
engine rpm at 1500-2000, and high blower speed.
This procedure (burnishing) will seat the opposing
friction surfaces and provide a higher clutch torque
capability.
NOTE: Excessive clutch gap will result in clutch
slippage or non-engagement.
CONDENSER
The condenser is located between the radiator and
the front bumper. The condenser can be serviced
without having to drain the cooling system or remove
the radiator.
REMOVAL
(1) Open hood and disconnect the negative battery
cable remote terminal from the remote battery post
(Fig. 13).
(2) Using a refrigerant recovery machine, remove
refrigerant from the A/C system.
(3) Partially drain engine coolant enough to not
spill any when the radiator is removed.
(4) Remove five push pin fasteners retaining the
center front fascia.
(5) Remove two right wheel well push pin fasten-
ers retaining front fascia.
(6) Remove right headlamp housing. Refer to Group
8L, Lamps for Removal and Installation procedure.
(7) Remove two push pin fasteners to air flow
deflectors.
(8) Remove upper radiator core support. Refer to
Group 23, Body for Removal and Installation procedures.
(9) Remove four retaining bolts, one upper clip and
one electrical connector to radiator fan module.
NOTE: If equipped with 3.2 / 3.5L engine, remove
two cooler lines to auxiliary engine oil cooler and
the hose retainer.
(10) Maneuver radiator fan module out of front
engine compartment.
(11) Loosen bracket retaining engine oil cooler
lines.
(12) Remove spring type clamp to upper radiator
hose at upper radiator.
(13) Remove spring type clamp to lower radiator
hose at lower radiator.
(14) Remove upper hose to auxiliary transmission
cooler.
(15) Remove one upper bolt to A/C suction line to
compressor.
(16) Remove one bolt to lower A/C suction line
from evaporator to condenser.
(17) Remove one auxiliary transmission cooler
return line.
Fig. 21 Installing Pulley Assembly
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HEATING AND AIR CONDITIONING
300M
REMOVAL AND INSTALLATION (Continued)
(18) Remove module from vehicle and place on
bench.
(19) With module on bench, remove one bolt to
auxiliary transmission cooler tube assembly.
(20) Remove auxiliary transmission cooler line to
radiator assembly cooler.
(21) Remove two bolts retaining condenser to radiator.
(22) Seperate condenser from radiator.
(23) Transfer auxiliary transmission cooler to new
condenser. Clip old zip ties off and remove cooler
assembly.
NOTE: The new condenser will include new zip ties
for the auxiliary transmission cooler attachment to
new condenser assembly.
CAUTION: Avoid bending or breaking condenser
inlet tube when lifting radiator/condenser assembly
from the vehicle.
INSTALLATION
For installation, reverse the above procedures.
CONTROL HEAD
The Heater A/C Control Head is located in the
instrument panel center bezel. Refer to Group 8E,
Instrument Panel and System for Removal and
Installation procedures.
DISCHARGE LINE
REMOVAL
(1) Remove refrigerant from the A/C system using
a refrigerant recovery machine.
(2) Disconnect A/C pressure transducer wire harness.
(3) Disconnect discharge line at condenser using a
M13 Hex wrench for 2.7L—6 mm allen wrench for
3.2/3.5L.
CAUTION: Cap all lines that are not being replaced
and cap the expansion valve tubes.
(4) Disconnect line at A/C compressor using a M10
Hex wrench.
INSTALLATION
For installation, reverse the above procedures.
Then, tighten bolts to 23 N·m (17 ft. lbs.) at con-
denser and compressor.
EVAPORATOR
The Heater A/C housing must be removed from the
vehicle when replacing the evaporator.
REMOVAL
(1) Open hood and disconnect the negative battery
cable remote terminal from the remote battery post
(Fig. 13).
CAUTION: The refrigerant must be removed from
the system before removing Heater-A/C housing.
Use a refrigerant recovery machine. A/C lines at
Thermostatic Expansion Valve must be removed
and the exposed fittings must be capped off to pre-
vent moisture from entering the system.
(2) Remove heater housing from vehicle. Refer to
Heater-A/C Housing Removal and Installation in this
section for procedure.
(3) Remove recirculation door actuator.
(4) Remove recirculation door and housing.
(5) Remove upper housing retaining screws.
(6) Remove upper half of heater housing.
(7) Lift evaporator out of lower housing.
(8) Transfer evaporator probe. Place the evapora-
tor probe in the same location as on the previous
evaporator.
INSTALLATION
For installation, reverse the above procedures.
EVAPORATOR TEMPERATURE SENSOR
The Evaporator Temperature Sensor is located on
the lower right side of the heater housing.
REMOVAL
(1) Open hood and disconnect the negative battery
cable remote terminal from the remote battery post
(Fig. 13).
(2) Remove right under panel silencer.
(3) Disconnect wiring connector for evaporator
probe.
(4) At center of heater housing, locate evaporator
probe access plate. Using a flat blade pry tool, pull
back on the locking tab. Twist the access plate
counter clockwise one-quarter turn and remove plate.
(5) Pull probe out of evaporator core. This plate
must be pushed inside the A/C unit and orientated in
such a way that the plate can be removed.
INSTALLATION
For installation, reverse the above procedures. The
new probe must not go into the same hole (in
the evaporator coil) that the old probe was
removed. The evaporator is manufactured with
three holes for probe insertion. Insert the probe in
the uppermost hole (Fig. 22).
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HEATING AND AIR CONDITIONING
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REMOVAL AND INSTALLATION (Continued)
EXPANSION VALVE
REMOVAL
(1) Remove refrigerant from the A/C system using
a refrigerant recovery machine.
(2) Remove engine air inlet tube and the air distribu-
tion duct on vehicles equipped with 3.2 / 3.5 liter engine.
(3) Remove one nut to A/C lines at expansion
valve.
(4) Loosen bolt at Filter/Drier to pivot lines away
from expansion valve.
(5) Gently pull A/C line out of expansion valve.
(6) Remove two #30 torx bolts retaining expansion
valve to evaporator coil.
(7) Remove expansion valve from vehicle.
CAUTION: Always install new O-rings when replac-
ing expansion valve.
INSTALLATION
For installation, reverse the above procedures.
FILTER - DRIER
CAUTION: When installing new filter - drier do not
leave open to atmosphere for a long period of time.
Receiver/drier contains moisture absorbing materi-
als which will absorb moisture in the atmosphere.
REMOVAL
(1) Remove refrigerant from A/C system using a
refrigerant recovery machine.
(2) Remove engine air inlet tube and the air distribu-
tion duct on vehicles equipped with 3.2 / 3.5 liter engine.
(3) Remove
one
8mm
hex
bolt
to
filter/drier
bracket.
(4) Remove one nut retaining A/C lines to expan-
sion valve.
(5) Gently pry filter/drier bracket out of strut
tower.
(6) Remove one A/C line at filter/drier (tubing to
condenser).
(7) Remove filter/drier from vehicle.
(8) Transfer small line from filter/drier to expan-
sion valve to new filter/drier.
NOTE: Always install new O-rings when replacing
Filter/Drier.
(9) Cap liquid line and condenser threaded fitting
while system is open to prevent moisture from enter-
ing system.
INSTALLATION
For installation, reverse the above procedures.
NOTE: Upon installation, loosely fit all parts and
lines together before individually tightening them to
prevent damage. Torque filter/drier plumbing fasten-
ers to 10 ft–lbs.
HEATER CORE
The HVAC unit housing must be removed from the
vehicle to service the heater core.
REMOVAL
(1) Open hood and disconnect the negative battery
cable remote terminal from the remote battery post
(Fig. 13).
(2) Remove the HVAC unit housing from vehicle.
Refer to Unit Housing Removal and Installation pro-
cedures in this section.
(3) With the HVAC unit housing out of the vehicle,
remove (2) screws retaining the heater core. Then
pull the heater core out of the heater housing.
INSTALLATION
For installation, reverse the above procedures.
(1) Push new heater core into the unit housing.
(2) Fasten heater core to HVAC unit housing with
(2) screws.
LIQUID LINE
REMOVAL
(1) Remove refrigerant from the A/C system using
a refrigerant recovery machine.
(2) Remove engine air inlet tube and the air distribu-
tion duct on vehicles equipped with 3.2 / 3.5 liter engine.
(3) Remove A/C plumbing to expansion valve fastener
using a M13 Hex wrench. Remove suction line block
from expansion valve, cap and swing out of the way.
Fig. 22 Evaporator Probe Needle
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HEATING AND AIR CONDITIONING
300M
REMOVAL AND INSTALLATION (Continued)
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