Chrysler New Yorker. Manual - part 51
NOTE: Use only Mopar
T
Antifreeze/Coolant, 5 Year/
100,000 Mile Formula or the equivalent. This coolant
contains
corrosion
inhibitors
(called
OAT,
for
Organic Additive Technology) that permit extended
drain intervals. Refer to Coolant Performance in this
section for appropriate coolant mixture to use.
CAUTION: Do not mix coolants. If coolant other
than Mopar
T
Antifreeze/Coolant, 5 Year/100,000 Mile
Formula or equivalent is added, the mixed coolant
will have a reduced service schedule. Refer to
Group 0, Lubrication and Maintenance for sched-
uled maintenance.
(6) Pour a 50/50 mix of Mopar
t Antifreeze/Coolant,
5 Year/100,000 Mile Formula or equivalent and dis-
tilled water into the larger section of Filling Aid Fun-
nel (the smaller section of Funnel is to allow air to
escape). Slowly fill the cooling system until a steady
stream of coolant flows from the hose attached to the
bleed valve (Fig. 13). Close the bleed valve and con-
tinue filling system to the top of the Filling Funnel.
(7) Remove clip from overflow hose (Fig. 14).
(8) Allow the coolant in Filling Funnel to drain
into overflow chamber of the pressure bottle.
NOTE: The coolant bottle has two chambers. Cool-
ant will normally only be in the inboard (smaller) of
the two. The outboard chamber is only to recover
coolant in the event of an overheat and should nor-
mally be empty. If there is coolant in the overflow
side of the coolant bottle, disconnect the end of the
overflow hose at the fill neck and lower it into a
clean container. Allow coolant to drain into the con-
tainer until emptied. Connect overflow hose to fill
neck.
(9) Remove Special Tool 8195, Filling Aid Funnel.
Install cap on coolant pressure bottle.
(10) Remove hose from bleed valve.
NOTE: The engine cooling system will push any
remaining air into the coolant bottle within about an
hour of normal driving. As a result, a drop in cool-
ant level in the pressure bottle may occur.
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—3.5L ENGINE
REMOVAL
The water pump on all models can be replaced
without discharging the air conditioning system.
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 9, Engine for
component removal to provide access to water pump.
(3) Remove water pump mounting bolts (Fig. 15).
(4) Remove water pump body from engine (Fig. 15).
INSTALLATION
(1) Clean all sealing surfaces on water pump and
cover.
(2)
Install new O-ring on water pump (Fig. 16).
Apply synthetic grease to the sealing groove and
O-ring to facilitate assembly.
Fig. 14 Special Tool 8195
7 - 16
COOLING SYSTEM
300M
SERVICE PROCEDURES (Continued)