Chrysler New Yorker. Manual — part 52
CAUTION: To prevent damage, the power cord must
be secured in its retainer clips, and not positioned
so it could contact linkages or exhaust manifolds.
(5) Lower vehicle.
AIR CONDITIONING BELT—3.5L ENGINE
REMOVAL
(1) Remove accessory drive belt to gain access to
the air conditioning drive belt. Refer to procedure in
this section.
(2) To remove air conditioning compressor drive
belt, first loosen the tensioner pulley lock nut, then
loosen the adjusting screw to the tensioner pulley
assembly until the belt can be removed (Fig. 24).
INSTALLATION
(1) Install air conditioning belt over drive pulleys.
Tighten the tensioner adjusting bolt until the belt is
at specified tension using a Belt Tension Gauge.
Refer to Belt Tension Chart. Tighten tensioner pulley
locking nut to 54 N·m (40 ft. lbs.).
(2) Install accessory drive belt and adjust to spec-
ified tension.
Air Conditioning Belt Tension Adjustment
Loosen the tensioner pulley locking nut and adjust
belt tension by tightening adjusting bolt. Use Belt
Tension Gauge and refer to Belt Tension Chart for
specifications. Torque pulley nut to 54 N·m (40 ft.
lbs.) after adjustment.
ACCESSORY DRIVE BELT—3.5L ENGINE
The Poly-V generator/power steering belt has an
adjustable tensioner pulley located on the front tim-
ing belt cover.
REMOVAL
(1) Loosen tensioner pulley locking nut.
(2) Raise vehicle on hoist.
(3) Remove the two (2) push clips attaching lower
air shield to engine cradle. Remove air shield.
(4) Loosen tensioner adjusting bolt until the acces-
sory belt can be removed.
INSTALLATION
(1) Install accessory drive belt.
NOTE: Use Special Tool 7198, Belt Tension Gauge
to obtain proper tension on accessory drive belt.
Refer to Belt Tension Chart.
(2) Tighten adjusting bolt until the specified ten-
sion is obtained.
(3) Install lower air shield and attaching push
clips.
(4) Lower vehicle.
(5) Tighten tensioner pulley locking nut.
CLEANING AND INSPECTION
WATER PUMP
Replace the water pump if it has any of the follow-
ing defects:
(1) Damage or cracks on the pump body.
(2) Coolant leaks; if the seal is leaking, this will be
evident by traces of thick deposits of greenish-brown
dried glycol running down the pump body and com-
ponents below. A thin black stain below pump weep
hole is considered normal operation.
(3) Impeller rubs inside of timing belt cover.
(4) Excessively loose or rough turning bearing.
Fig. 24 Air Conditioning and Accessory Drive Belts
BELT TENSION CHART—3.5L
POLY-V BELT
GAUGE
Accessory Drive Belt
New Belt: 836
6
44 N
(190
6
10 lbs.)
Used Belt: 534 N
(120 lbs.)
V-BELT
GAUGE
Air Conditioning Belt
New Belt: 667
6
44 N
(150
6
10 lbs.)
Used Belt: 534 N
(120 lbs.)
7 - 20
COOLING SYSTEM
300M
REMOVAL AND INSTALLATION (Continued)
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
green/brown engine coolant is evident on water
pump body from the weep hole (shaft seal failure).
Be sure to perform a thorough analysis before
replacing water pump.
ACCESSORY DRIVE BELT
Satisfactory performance of the belt driven accesso-
ries depends on belt condition and proper belt ten-
sion.
Belt replacement under any or all of the following
conditions is required:
(1) Excessive wear.
(2) Frayed cords.
(3) Severe glazing.
V-Ribbed belt system with back drive pulley may
develop minor cracks across the ribbed side (due to
reverse bending). These minor cracks are considered
normal and acceptable. Parallel cracks are not (Fig.
25).
COOLANT BOTTLE PRESSURE CAP
The pressure cap upper gasket (seal) pressure
relief can be checked by removing cap. Attach the
Radiator Pressure Tool to the cap and pump air into
the cap. Pressure cap upper gasket should relieve at
124 kPa (18 psi) and hold pressure at 110 kPa (16
psi) minimum.
Remove the pressure tester hold the cap in hand,
right side up (Fig. 26). The vent valve at the bottom
of the cap should not open. If the rubber gasket has
swollen and prevents the valve from closing, replace
the cap.
Hold the cleaned cap in hand upside down. If any
light can be seen between vent valve and rubber gas-
ket, replace cap.
WARNING:
THE WARNING WORDS DO NOT OPEN
HOT ON THE COOLANT BOTTLE PRESSURE CAP
IS A SAFETY PRECAUTION. WHEN HOT, PRES-
SURE BUILDS UP IN COOLING SYSTEM. TO PRE-
VENT
SCALDING
OR
INJURY,
THE
COOLANT
BOTTLE
PRESSURE
CAP
SHOULD
NOT
BE
REMOVED WHILE THE SYSTEM IS HOT AND/OR
UNDER PRESSURE.
There is no need to remove the pressure cap at any
time except for the following purposes:
• Checking and adjust antifreeze freeze point.
• Refilling system with new coolant.
• Conducting service procedures.
• Checking for vacuum leaks.
WARNING:
IF
VEHICLE
HAS
BEEN
RUN
RECENTLY, WAIT 15 MINUTES BEFORE REMOVING
CAP. THEN PLACE A SHOP TOWEL OVER THE CAP
AND WITHOUT PUSHING DOWN ROTATE IT COUN-
TERCLOCKWISE TO THE FIRST STOP. ALLOW FLU-
IDS TO ESCAPE THROUGH THE OVERFLOW TUBE
AND WHEN THE SYSTEM STOPS PUSHING OUT
COOLANT AND STEAM AND PRESSURE DROPS,
REMOVE THE CAP COMPLETELY. SQUEEZING THE
RADIATOR INLET HOSE WITH A SHOP TOWEL (TO
CHECK PRESSURE) BEFORE AND AFTER TURNING
TO THE FIRST STOP IS RECOMMENDED.
Fig. 26 Pressure Cap
Fig. 25 Drive Belt Inspection
300M
COOLING SYSTEM
7 - 21
CLEANING AND INSPECTION (Continued)
CLEANING COOLING SYSTEM
Drain cooling system. Refer to Draining Cooling
System in this section. Refill with clean distilled
water. Refer to Refilling Cooling System in this sec-
tion. Run engine with radiator cap installed until
upper radiator hose is warm. Stop engine and drain
water from system. If water is dirty, fill, run and
drain system again until water runs clear.
REVERSE FLUSHING COOLING SYSTEM
Reverse flushing of the cooling system is the forc-
ing of water through the cooling system, using air
pressure in a direction opposite to that of the normal
flow of water. This is only necessary with dirty sys-
tems or in case of partially plugged systems.
RADIATOR
Drain cooling system and remove radiator hoses
from engine. Install suitable flushing gun in radiator
lower hose. Fill radiator with clean water and turn
on air in short blasts.
CAUTION:
Internal radiator pressure must not
exceed 138 kPa (20 psi) as damage to radiator may
result. Continue this procedure until water runs
clear.
ENGINE
Drain radiator. Refer to Draining Cooling System
in this section. Remove hoses from radiator. Remove
engine thermostat and reinstall thermostat housing.
Install suitable flushing gun to thermostat housing
hose. Turn on water, and when engine is filled, turn
on air, but no higher than 138 kPa (20 psi) in short
blasts. Allow engine to fill between blasts of air. Con-
tinue this procedure until water runs clean. Install
thermostat using a new housing gasket. Fill cooling
system. Refer to Refilling Cooling System in this sec-
tion.
ADJUSTMENTS
BELT TENSION GAUGE METHOD
Use belt tension gauge, Special Tool 7198 for con-
ventional V-belts and Poly-V belts.
Adjust the belt tension for NEW or USED belt ten-
sion applications. Refer to Belt Tension Chart.
SPECIFICATIONS
COOLING SYSTEM CAPACITY
ENGINE
CAPACITIES
3.5L
7.5 LITERS
7.92 QTS.
CAPACITY: Includes Heater and Coolant Pressure
Bottle
TORQUE
DESCRIPTION
TORQUE
Accessory Drive Belt Tensioner Pulley—3.5L
Nut . . . . . . . . . . . . . . . . . . . . . 54 N·m (40 ft. lbs.)
Air Conditioning Belt Tensioner Pulley—3.5L
Nut . . . . . . . . . . . . . . . . . . . . . 54 N·m (40 ft. lbs.)
Fan Module To Radiator
Screws . . . . . . . . . . . . . . . . . . . 5 N·m (45 in. lbs.)
Fan Blade To Motor
Nut . . . . . . . . . . . . . . . . . . . . . 5 N·m (45 in. lbs.)
Condenser Inlet Tube Bracket
Screw . . . . . . . . . . . . . . . . . . . . 5 N·m (45 in. lbs.)
A/C Condenser to Radiator
Bolt . . . . . . . . . . . . . . . . . . . . . 5 N·m (45 in. lbs.)
Fan Motor To Shroud
Screws . . . . . . . . . . . . . . . . . . . 3 N·m (25 in. lbs.)
Thermostat Housing
Bolts . . . . . . . . . . . . . . . . . . . 12 N·m (105 in. lbs.)
Water Pump Mounting
Bolts—3.5L . . . . . . . . . . . . . . 12 N·m (105 in. lbs.)
Cooling System Bleed Valve
Screw . . . . . . . . . . . . . . . . . . . . 8 N·m (70 in. lbs.)
BELT TENSION CHART—3.5L ENGINE
POLY-V BELT
GAUGE
Accessory Drive Belt
New Belt: 836
6
44 N
(190
6
10 lbs.)
Used Belt: 534 N
(120 lbs.)
V-BELT
GAUGE
Air Conditioning Belt
New Belt: 667
6
44 N
(150
6
10 lbs.)
Used Belt: 534 N
(120 lbs.)
7 - 22
COOLING SYSTEM
300M
CLEANING AND INSPECTION (Continued)
SPECIAL TOOLS
COOLING
Filling Aid Funnel 8195
Belt Tension Gauge 7198
Hose Clamp Pliers 6094
300M
COOLING SYSTEM
7 - 23
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