Content .. 217 218 219 220 ..

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

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

(3)

standard

(2) +003

(+0.0002

in.)

(1)

+0.006

(+0.0003

in.)

Crank-

shaft

Main

Journal

Grade
Marks

(4)

-0.003

(-0.0002

in.)

(3)

standard

(2) +003

(+0.0002

in.)

(5)

-0.006

(-0.0003

in.)

(4)

-0.003

(-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

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

Seat Width

Intake: 0.75
– 1.25 mm
(0.030 –
0.049 in.)

Exhaust:
1.25 – 1.75
mm (0.049
– 0.069 in.)

Face Angle

Intake & Exhaust: 44.5 –
45°

Seat Angle

Intake & Exhaust: 45 –
45.5°

Seat Contact
Area

Valve to seat contact must
be at center of valve face.

Fig. 22 Valve Spring I.D.

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

SERVICE PROCEDURES (Continued)

Content .. 217 218 219 220 ..