1996 CHRYSLER VOYAGER Service Manual

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Page 1097 of 1938

CHRYSLER VOYAGER 1996 Service Manual (7) Install main bearing bedplate to engine block
bolts 11, 17 and 20 finger tight. Tighten these bolts
down together until the bedplate contacts the cylin-
der block.
(8) To ensure correct thrust bea

(7) Install main bearing bedplate to engine block
bolts 11, 17 and 20 finger tight. Tighten these bolts
down together until the bedplate contacts the cylin-
der block.
(8) To ensure correct thrust bearing alignment per-
form the following steps:
²Step 1: Rotate crankshaft until number 4 pis-
ton is at TDC.
²Step 2: Move crankshaft rearward to limits of
travel.
²Step 3: Then, move crankshaft forward to lim-
its of travel.
²Step 4: Wedge an appropraite tool between the
rear of the cylinder block(NOT BED PLATE)and
the rear crankshaft counterweight. This will hold the
crankshaft in it's furthest forward position.
²Step 5: Install and tighten bolts (1-10) in
sequence shown in (Fig. 84) to 41 Nzm (30 ft. lbs.).
²Step 6: Remove wedge tool used to hold crank-
shaft.
(9) Tighten bolts (1-10) again to 41 Nzm (30 ft. lbs)
+ 1/4 turn in sequence shown in (Fig. 84).
(10) Install main bearing bedplate to engine block
bolts (11-20), and torque each bolt to 28 Nzm (20 ft.
lbs.) in sequence shown in (Fig. 84).
(11) After the main bearing bedplate is installed,
check the crankshaft turning torque. The turning
torque should not exceed 5.6 Nzm (50 in. lbs.).
OIL FILTER
CAUTION: When servicing the oil filter avoid
deforming the filter can by installing the remove/in-
stall tool band strap against the can to base lock
seam. The lock seam joining the can to the base is
reinforced by the base plate.(1) Turn counterclockwise to remove.
(2) To install, lubricate new filter gasket. Check
filter mounting surface. The surface must be smooth,
flat and free of debris or old pieces of rubber. Screw
filter on until the gasket contacts base. Tighten to 21
N´m (15 ft. lbs.).
OIL PUMP
REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove Timing Belt. Refer to procedure out-
lined in this section.
(3) Remove Oil Pan. Refer to procedure outlined in
this section.
(4) Remove Crankshaft Sprocket using Special Tool
6793 and insert C-4685-C2 (Fig. 85).
(5) Remove oil pick-up tube.
(6) Remove oil pump, (Fig. 86) and front crank-
shaft seal.
Fig. 85 Crankshaft SprocketÐRemoval
NS2.4L ENGINE 9 - 47
REMOVAL AND INSTALLATION (Continued)

Page 1098 of 1938

CHRYSLER VOYAGER 1996 Service Manual INSTALLATION
(1) Make sure all surfaces are clean and free of oil
and dirt.
(2) Apply MopartGasket Maker to oil pump as
shown in (Fig. 87). Install oil ring into oil pump body
discharge passage.
(3) P

Page 1099 of 1938

CHRYSLER VOYAGER 1996 Service Manual PISTON AND CONNECTING ROD
REMOVAL
NOTE: Cylinder Head must be removed before Pis-
tons and Rods. Refer to Cylinder Head Removal in
this section.
(1) Remove top ridge of cylinder bores with a reli-
abl

Page 1100 of 1938

CHRYSLER VOYAGER 1996 Service Manual (2) Before installing the ring compressor, make
sure the oil ring expander ends are butted and the
rail gaps located as shown in (Fig. 92). As viewed
from top.
(3) Immerse the piston head and rings in

Page 1101 of 1938

CHRYSLER VOYAGER 1996 Service Manual (4) Wash all parts in a suitable solvent and
inspect carefully for damage or wear.
ASSEMBLY
(1) Assemble pump, using new parts as required.
Install the inner rotor with chamfer facing the
cast iron oi

Page 1102 of 1938

CHRYSLER VOYAGER 1996 Service Manual (3) If valve stems are worn more than 0.05 mm
(.002 in.), replace valve.
VALVE SPRINGS
(1) Whenever valves have been removed for
inspection, reconditioning or replacement, valve
springs should be test

(3) If valve stems are worn more than 0.05 mm
(.002 in.), replace valve.
VALVE SPRINGS
(1) Whenever valves have been removed for
inspection, reconditioning or replacement, valve
springs should be tested for correct tension. Discard
the springs that do not meet specifications. The fol-
lowing specifications apply to both intake and
exhaust valves springs:
²Valve Closed Nominal TensionÐ 76 lbs. @ 38.0
mm (1.50 in.)
²Valve Open Nominal TensionÐ 136 lbs. @ 29.75
mm (1.17 in.)
(2) Inspect each valve spring for squareness with
a steel square and surface plate, test springs from
both ends. If the spring is more than 1.5 mm (1/16
inch) out of square, install a new spring.
CRANKSHAFT
The crankshaft journals should be checked for
excessive wear, taper and scoring (Fig. 99). Limits of
taper or out-of-round on any crankshaft journals
should be held to .025 mm (.001 inch). Journal grind-
ing should not exceed .305 mm (.012 inch) under the
standard journal diameter.DO NOTgrind thrust
faces of Number 3 main bearing.DO NOTnick
crank pin or bearing fillets. After grinding, remove
rough edges from crankshaft oil holes and clean out
all passages.
CAUTION: With the nodular cast iron crankshafts
used it is important that the final paper or cloth pol-
ish after any journal regrind be in the same direc-
tion as normal rotation in the engine.
OIL PUMP
(1) Clean all parts thoroughly. Mating surface of
the oil pump should be smooth (Fig. 100). Replace
pump cover if scratched or grooved.(2) Lay a straightedge across the pump cover sur-
face (Fig. 101). If a 0.025 mm (0.001 in.) feeler gauge
can be inserted between cover and straight edge,
cover should be replaced.
(3) Measure thickness and diameter of outer rotor.
If outer rotor thickness measures 9.40 mm (0.370 in.)
or less (Fig. 102), or if the diameter is 79.95 mm
(3.148 in.) or less, replace outer rotor.
(4) If inner rotor measures 9.40 mm (0.370 in.) or
less replace inner rotor (Fig. 103).
(5) Slide outer rotor into pump housing, press to
one side with fingers and measure clearance between
rotor and housing (Fig. 104). If measurement is 0.39
mm (0.015 in.) or more, replace housing only if outer
rotor is in specification.
(6) Install inner rotor into pump housing. If clear-
ance between inner and outer rotors (Fig. 105) is
0.203 mm (0.008 in.) or more, replace both rotors.
(7) Place a straightedge across the face of the
pump housing, between bolt holes. If a feeler gauge
of 0.102 mm (0.004 in.), or more can be inserted
Fig. 99 Crankshaft Journal Measurements
Fig. 100 Oil Pump
Fig. 101 Checking Oil Pump Cover Flatness
9 - 52 2.4L ENGINENS
CLEANING AND INSPECTION (Continued)

Page 1103 of 1938

CHRYSLER VOYAGER 1996 Service Manual between rotors and the straightedge, replace pump
assembly (Fig. 106),ONLYif rotors are in specs.
(8) Inspect oil pressure relief valve plunger for
scoring and free operation in its bore. Small marks

Page 1104 of 1938

CHRYSLER VOYAGER 1996 Service Manual CYLINDER BLOCK
(1) Clean cylinder block thoroughly and check all
core hole plugs for evidence of leaking.
(2) If new core plugs are installed, refer to Engine
Core Plugs outlined in this section.
(3)

CYLINDER BLOCK
(1) Clean cylinder block thoroughly and check all
core hole plugs for evidence of leaking.
(2) If new core plugs are installed, refer to Engine
Core Plugs outlined in this section.
(3) Examine block and cylinder bores for cracks or
fractures.
CYLINDER BORE INSPECTION
The cylinder walls should be checked for out-of-
round and taper with Tool C119 (Fig. 107). The cyl-
inder bore out-of-round is 0.050 mm (0.002 in.)
maximum and cylinder bore taper is 0.051 mm (0.002
in.) maximum. If the cylinder walls are badly scuffed
or scored, the cylinder block should be replaced, and
new pistons and rings fitted.
Measure the cylinder bore at three levels in direc-
tions A and B (Fig. 107). Top measurement should be
10 mm (3/8 in.) down and bottom measurement
should be 10 mm (3/8 in.) up from bottom of bore.
Refer to Cylinder Bore and Piston Specification
Chart.
ADJUSTMENTS
ENGINE MOUNTS
ENGINE MOUNT INSULATOR ADJUSTMENT
(1) Remove the load on the engine motor mounts
by carefully supporting the engine and transmission
assembly with a floor jack.
(2) Loosen the right engine mount insulator verti-
cal fastener and the fore and aft fasteners, and the
front engine mount bracket to front crossmember
screws.
(3) Pry the engine right or left as required to
achieve the proper drive shaft assembly length. Refer
to Group 2, Suspension and Driveshafts for drive-
shaft identification and related assembly length mea-
suring.
(4) Tighten engine mounts and fasteners in the
following order:
(a) Right engine mount insulator vertical bolts
to 102 N´m (75 ft. lbs.) and the fore and aft bolts to
150 N´m (110 ft. lbs.).
(b) Front engine mount screws to 54 N´m (40 ft.
lbs.) the clearance between the snubbers and the
engine should be 2 mm (0.078 inch.) each side.
(c) Left engine mount through bolt to 75 N´m (55
ft. lbs.).
(5) Recheck driveshaft length.
Fig. 107 Checking Cylinder Bore Size
CYLINDER BORE AND PISTON
SPECIFICATION CHART
Standard Bore Maximum Out-
Of-RoundMaximum-
Taper
87.5 mm 0.051 mm 0.051 mm
(3.445 in.) (0.002 in.) (0.002 in.)
Standard Piston Size
87.450 - 87.468 mm (3.4434 - 3.4441 in.)
Piston To Bore Clearance
0.024 - 0.057 mm (0.0009 - 0.0022 in.)
Measurements taken at Piston Size Location.
9 - 54 2.4L ENGINENS
CLEANING AND INSPECTION (Continued)

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