Chrysler New Yorker. Manual — part 219
CRANKSHAFT MAIN BEARING FITTING
The main bearings are a “select fit” to achieve
proper oil clearances. For main bearing selection, the
block
and
crankshaft
have
grade
identification
marks.
The marks for the cylinder block main bore grade
are located on the left side pan rail, just rear of the
left engine mount bracket (Fig. 16). These grade
marks (1, 2, or 3) are read left to right, corresponding
to main bore 1, 2, 3, 4.
The grade marks for the crankshaft are located on
the rearmost crankshaft counter weight as shown in
(Fig. 17). The crankshaft journal grade marks (A, B,
or C) are read left to right, corresponding with jour-
nal number 1, 2, 3, 4.
Use the Main Bearing Selection Chart to properly
select the main bearings. For an example, if the main
bore grade is 3 and the journal grade is B, the proper
select fit bearing would be a (2) +0.003 mm (+0.0002
in.).
NOTE: Service main bearings have a number from
(1 – 5) marked in ink on the bearing surface (Fig.
18). For verification, use the Main Bearing Selection
Chart for number to size identification.
The upper main bearing has a oil feed hole and a
center groove to allow lubrication of the main journal
and must be properly positioned in the block.
CHECKING CRANKSHAFT END PLAY
(1) Using Dial Indicator C-3339 and Mounting
Post L-4438, attach to front of engine, locating probe
perpendicular on nose of crankshaft (Fig. 19).
(2) Move crankshaft all the way to the rear of its
travel.
(3) Zero the dial indicator.
(4) Move crankshaft all the way to the front and
read the dial indicator. Refer to Crankshaft End Play
Specification Chart.
Fig. 15 Connecting Rod Side Clearance Measuring
CONNECTING ROD SIDE CLEARANCE CHART
New Part:
0.13 to 0.38 mm (0.005
to 0.015 in.)
Wear Limit:
0.40 mm (0.0157 in.)
Fig. 16 Cylinder Block Main Bore Grade Marking
Location
Fig. 17 Crankshaft Main Journal Grade Marking
Location—Rear Of Block (Inverted) View
LH
3.2L ENGINE
9 - 71
SERVICE PROCEDURES (Continued)
REFACING VALVES AND VALVE SEATS
The intake and exhaust valves have a 44.5 to 45
degree face angle. The valve seats have a 45 to 45.5
degree face angle. The valve face and valve seat
angles are shown in (Fig. 21).
Fig. 18 Main Bearing Grade Marks
MAIN BEARING SELECTION CHART—3.2L
Main Bearing Bore Grade
Marks
1
2
3
A
(3)
standard
(2) +003
mm
(+0.0002
in.)
(1)
+0.006
mm
(+0.0003
in.)
Crank-
shaft
Main
Journal
Grade
Marks
B
(4)
-0.003
mm
(-0.0002
in.)
(3)
standard
(2) +003
mm
(+0.0002
in.)
C
(5)
-0.006
mm
(-0.0003
in.)
(4)
-0.003
mm
(-0.0002
in.)
(3)
standard
Fig. 19 Checking Crankshaft End Play
CRANKSHAFT END PLAY SPECIFICATION
CHART
New Part:
0.10 to 0.30 mm (0.004
to 0.012 in.)
Wear Limit:
0.43 mm (0.017 in.)
VALVE SPECIFICATION CHART
FACE ANGLE
Intake and Exhaust:
44.5° – 45°
HEAD DIAMETER
Intake:
36.37 – 36.63 mm
(1.4319 – 1.4421 in.)
Exhaust:
28.87 – 29.13 mm
(1.1366 – 1.1468 in.)
LENGTH (OVERALL)
Intake:
114.41 – 114.99 mm
(4.5043 – 4.5272 in.)
Exhaust:
125.67 – 126.25 mm
(4.9476 – 4.9705 in.)
STEM DIAMETER
Intake:
6.935 – 6.953 mm
(0.2730 – 0.2737 in.)
Exhaust:
6.906 – 6.924 mm
(0.2719 – 0.2726 in.)
VALVE MARGIN
Intake:
0.835 – 1.165 mm
(0.0329 – 0.0459 in.)
Exhaust:
1.44 – 1.77 mm (0.0567
– 0.0697 in.)
9 - 72
3.2L ENGINE
LH
SERVICE PROCEDURES (Continued)
VALVES
(1) Inspect the remaining margin after the valves
are refaced (Fig. 20). Refer to Valve Specifications
Chart.
VALVE SEATS
(1) When refacing valve seats, it is important that
the correct size valve guide pilot be used for reseat-
ing stones. A true and complete surface must be
obtained.
(2) Measure the concentricity of valve seat using
dial indicator. Total runout should not exceed 0.051
mm (0.002 inch.) total indicator reading.
(3) Inspect the valve seat with Prussian blue to
determine where the valve contacts the seat. To do
this, coat valve seat LIGHTLY with Prussian blue
then set valve in place. Rotate the valve with light
pressure. If the blue is transferred to the center of
valve face, contact is satisfactory. If the blue is trans-
ferred to top edge of valve face, then lower valve seat
with a 15 degree stone. If the blue is transferred to
the bottom edge of valve face, then raise valve seat
with a 65 degree stone.
NOTE:
Valve seats which are worn or burned can
be reworked, provided that correct angle and seat
width are maintained. Otherwise cylinder head must
be replaced.
(4) When seat is properly positioned the width of
the intake seats should be 0.75 to 1.25 mm (0.0296 to
0.0493 in.) and exhaust seats should be 1.25 to 1.75
mm (0.049 to 0.069 in.) (Fig. 21).
(5) Check the valve spring installed height after
refacing the valve and seat (Fig. 23).
VALVE SPRING IDENTIFICATION
The valve springs are of two different lengths and
are wound in different directions. The valve springs
are color coded, intake spring is right hand coil direc-
tion with orange dye on the top coils and the exhaust
spring is left hand coil direction with a green dye on
the top coils (Fig. 22).
VALVE INSTALLATION
(1) Coat valve stems with clean engine oil and
insert them in cylinder head.
(2) If valves or seats have been reground, check
valve tip height (A) (Fig. 23). If valve tip height is
greater than 43.65 mm (1.7185 in.) intake or 45.98
mm (1.8102 in.) exhaust, grind valve tip until within
specifications. Make sure measurement is taken from
cylinder head surface to the top of valve stem.
(3) Install valve seal/spring seat assembly over
valve guides on all valve stems (Fig. 24). Ensure that
Fig. 20 Intake and Exhaust Valves
Fig. 21 Valve Seats
ITEM
DESCRIPTION
SPECIFICATION
A
Seat Width
Intake: 0.75
– 1.25 mm
(0.030 –
0.049 in.)
Exhaust:
1.25 – 1.75
mm (0.049
– 0.069 in.)
B
Face Angle
Intake & Exhaust: 44.5 –
45°
C
Seat Angle
Intake & Exhaust: 45 –
45.5°
D
Seat Contact
Area
Valve to seat contact must
be at center of valve face.
Fig. 22 Valve Spring I.D.
LH
3.2L ENGINE
9 - 73
SERVICE PROCEDURES (Continued)
the garter spring is intact around the top of the rub-
ber seal. Install valve springs, valve retainers.
(4) Compress valve springs with a valve spring
compressor install locks and release tool. If valves
and/or
seats
are
reground,
measure
the
installed height of springs (B) (Fig. 23), make
sure measurements are taken from top of
spring seat to the bottom surface of spring
retainer. If height is greater than 38.75 mm (1.5256
in.), install a 0.762 mm (0.030 in.) spacer in head
counterbore under the valve spring seat to bring
spring height back within specification.
REMOVAL AND INSTALLATION
ENGINE MOUNTS—LEFT AND RIGHT
REMOVAL
(1) Raise vehicle on hoist.
(2) Remove the isolator attaching nuts from top of
the mounting bracket (Fig. 25).
(3) Support the engine with a jack and a block of
wood across the full width of the oil pan.
(4) Remove the lower attaching nuts from the bot-
tom of the isolator to the frame (Fig. 25).
(5) Raise engine carefully with jack enough to
remove the isolator with heat shield from its mount.
INSTALLATION
(1) Install isolator mount with heat shield onto the
frame.
(2) Lower the engine onto the isolator mount.
(3) Remove jack from vehicle.
(4) Tighten the isolator to frame nuts to 61 N·m
(45 ft. lbs.) (Fig. 25).
(5) Install the upper attaching nuts to mount and
tighten to 61 N·m (45 ft. lbs.) (Fig. 25).
(6) Lower vehicle.
ENGINE HYDRO-MOUNT ISOLATORS
Engine hydro-mounts may show surface cracks,
this will not effect performance and hydro-mount
should not be replaced. Only replace the engine
hydro-mounts when leaking fluid:
• Driveshaft distress: Refer to Driveshafts in Sus-
pension, Group 2.
• Any front end structural damage (after repair).
• Isolator replacement.
ENGINE MOUNT—REAR
REMOVAL
(1) Raise vehicle on hoist.
(2) Support transaxle with a jack.
(3) Remove isolator nuts from the mount to tran-
saxle mount bracket (Fig. 25).
(4) Remove rear mount isolator bolts to crossmem-
ber and remove mount (Fig. 25).
INSTALLATION
(1) Position isolator onto crossmember.
(2) Install bolts attaching isolator to crossmember
and tighten to 33 N·m (250 in. lbs.) (Fig. 25).
(3) Lower transaxle onto isolator
(4) Install isolator nuts and tighten to 61 N·m (45
ft. lbs.) (Fig. 25).
(5) Lower vehicle.
Fig. 23 Checking Valve Tip Height and Valve Spring
Installed Height
Fig. 24 Valve Seal and Spring—Installation
9 - 74
3.2L ENGINE
LH
SERVICE PROCEDURES (Continued)
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