Chrysler New Yorker. Manual — part 44
Fig. 15 Cooling System Bleeding
7 - 16
COOLING
LH
SERVICE PROCEDURES (Continued)
NOTE: If the engine cooling system overheats and
pushes coolant into the overflow flow side of the
coolant bottle, this coolant will be sucked back into
the cooling system ONLY IF THE PRESSURE CAP
IS LEFT ON THE BOTTLE. Removing the pressure
cap breaks the vacuum path between the two bottle
sections and the coolant will not return to cooling
system.
REMOVAL AND INSTALLATION
WATER PUMP—2.7L ENGINE
REMOVAL
The water pump on all models can be replaced
without discharging the air conditioning system.
NOTE: It is normal for the water pump to weep a
small amount of coolant from the weep hole (black
stain at weep passage). Do not replace the water
pump if this condition exists. Replace the water
pump if a heavy deposit or a steady flow of engine
coolant is evident on side of the cylinder block
from the weep hole passage (shaft seal failure). Be
sure to perform a thorough analysis before replac-
ing water pump.
WARNING: DO
NOT
REMOVE
PRESSURE
CAP
WITH THE SYSTEM HOT AND PRESSURIZED. SERI-
OUS BURNS FROM COOLANT CAN RESULT.
(1) Drain cooling system. Refer to Cooling System
Draining in this section.
(2) Remove upper radiator crossmember. Refer to
Group 23, Body for procedure.
(3) Remove fan module.
(4) Remove accessory and air conditioning drive
belts.
NOTE: The water pump is driven by the primary
timing chain.
(5)
Remove crankshaft damper, timing chain
cover, primary timing chain, and all chain guides.
Refer to Group 09, Engine for procedures.
(6) Remove bolts attaching water pump to block
(Fig. 17).
(7) Remove water pump and gasket.
INSTALLATION
(1) Clean all sealing surfaces.
(2) Install water pump and gasket. Tighten mount-
ing bolts to 12 N·m (105 in. lbs.).
(3) Install timing chain guides, timing chain, tim-
ing chain cover, and crankshaft damper.
(4) Install air conditioning and accessory drive
belts. Refer to procedure outlined in this section.
(5) Install fan module and upper radiator cross-
member.
(6) Fill cooling system. Refer to Cooling System
Refilling, in this section.
WATER PUMP—3.2L ENGINE
REMOVAL
The water pump on all models can be replaced
without discharging the air conditioning system.
Fig. 16 Special Tool 8195
Fig. 17 Water Pump—2.7L Engine
LH
COOLING
7 - 17
SERVICE PROCEDURES (Continued)
WARNING:
DO NOT REMOVE PRESSURE CAP
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
NOTE: It is normal for the water pump to weep a
small amount of coolant from the weep hole (black
stain on water pump body). Do not replace the
water pump if this condition exists. Replace the
water pump if a heavy deposit or a steady flow of
engine coolant is evident on water pump body from
the weep hole (shaft seal failure). Be sure to per-
form a thorough analysis before replacing water
pump.
(1) Drain cooling system. Refer to Cooling System
Draining in this section.
(2) The water pump is driven by the timing belt.
Refer to Timing Belt Removal in Group 09, Engine
for component removal to provide access to water
pump.
(3) Remove water pump mounting bolts (Fig. 18).
(4) Remove water pump body from engine (Fig.
18).
INSTALLATION
(1) Clean all O-ring surfaces on pump and cover.
(2)
Install new O-ring on water pump (Fig. 19).
Wet the O-ring with water to facilitate assembly.
CAUTION:
Keep the O-ring free of oil or grease.
(3) Install water pump to engine mounting bolts
and tighten to 12 N·m (105 in. lbs.).
(4) Install timing belt. Refer to Group 09, Engine
for procedures.
(5) Fill cooling system. Refer to Cooling System
Refilling.
WATER OUTLET CONNECTOR—2.7L
REMOVAL
WARNING:
DO NOT REMOVE PRESSURE CAP
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
(1) Drain cooling system. Refer to procedure in
this section.
(2) Remove upper radiator crossmember. Refer to
Group 23, Body for procedure.
(3) Remove upper intake manifold. Refer to Group
11, Exhaust System and Intake Manifold for proce-
dure.
(4) Disconnect upper radiator hose at outlet con-
nector.
(5) Disconnect the heater hose quick-connect tee
from the heater tube at rear of engine.
(6) Disconnect heater tube retaining clip at rear of
engine.
(7) Disconnect electrical connector from coolant
temperature sensor.
(8) Remove bolts attaching water outlet connector
(Fig. 20). To remove outlet connector, move forward
until heater tube clears cylinder heads.
INSTALLATION
(1) Clean sealing surfaces. Inspect gasket for tears
and cuts. Replace as necessary
(2) Position outlet connector by inserting tube in-
between cylinder heads (Fig. 20).
(3) Install attaching bolts and tighten to 12 N·m
(105 in. lbs.) (Fig. 20).
Fig. 18 Water Pump—3.2L Engine
Fig. 19 Water Pump Body—3.2L Engine
7 - 18
COOLING
LH
REMOVAL AND INSTALLATION (Continued)
(4) Connect retaining clip and heater hose quick-
connect tee to the heater tube at rear of engine.
(5) Connect electrical connector to coolant temper-
ature sensor.
(6) Connect upper radiator hose to water outlet
connector.
(7) Install upper intake manifold and upper radia-
tor support.
(8) Fill cooling system. Refer to Cooling System
Filling in this section.
THERMOSTAT—2.7L
REMOVAL
(1) Disconnect negative cable from remote jumper
terminal.
WARNING:
DO NOT REMOVE PRESSURE CAP
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
(2) Drain cooling system.
(3) Remove accessory drive belt for removal of the
generator.
(4) Raise vehicle on hoist.
(5) Remove generator attaching bolts. Set genera-
tor aside for ease of access to thermostat.
(6) Remove lower radiator and heater hoses from
thermostat housing.
(7) Remove thermostat housing bolts (Fig. 21).
(8) Remove thermostat and housing.
INSTALLATION
(1) Clean gasket sealing surfaces.
NOTE: Install
thermostat
with
the
bleed
valve
located at the 12 o’clock position.
(2) Install thermostat and gasket into the thermo-
stat housing.
(3) Install thermostat and housing to cylinder
block. Tighten attaching bolts to 12 N·m (105 in. lbs.)
(Fig. 21).
(4) Connect
heater
and
lower
radiator
hoses.
Install hose clamps.
(5) Install generator and attaching bolts.
(6) Lower vehicle.
(7) Install accessory drive belt. Refer to procedure
outlined in this section.
(8) Refill cooling system (see Cooling System
Refilling ).
(9) Connect negative cable to remote jumper termi-
nal.
THERMOSTAT—3.2L ENGINE
REMOVAL
WARNING:
DO NOT REMOVE PRESSURE CAP
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
(1) Disconnect negative cable from remote jumper
terminal.
(2) Drain cooling system.
(3) Raise vehicle on hoist.
(4) Disconnect electrical connectors from engine oil
and power steering pressure switches.
Fig. 20 Water Outlet Connector—Removal and
Installation
Fig. 21 Thermostat and Housing—2.7L Engine
LH
COOLING
7 - 19
REMOVAL AND INSTALLATION (Continued)
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