shaft CHRYSLER VOYAGER 1996 Service Manual

CAUTION: Do not pry up on one side of the bed-
plate. Damage may occur to cylinder block and bed-
plate alignment.(7) Bedplate should be removed evenly from the
cylinder block dowel pins.
(8) Lift out crankshaft from cylinder block. Be sure
not to damage the main bearings or journals when
removing the crankshaft.
CRANKSHAFT MAIN BEARINGS LOCATION
The crankshaft is supported in five main bearings.
All upper bearing shells in the crankcase have oil
grooves. All lower bearing shells installed in the (bed-
plate) main bearing cap are plain. Crankshaft end
play is controlled by a flanged bearing on the number
three main bearing journal (Fig. 64).
NOTE: The upper and lower main Bearing shells
are Not interchangeable. The lower shells have a
revised tab to prevent improper installation.
CRANKSHAFT MAIN JOURNALS INSPECTION
The crankshaft journals should be checked for
excessive wear, taper and scoring. Limits of taper or
out-of-round on any crankshaft journals should be
held to .025 mm (.001 inch). Journal grinding should
not exceed .305 mm (.012 inch) under the standard
journal diameter. DO NOT grind thrust faces of
Number 3 main bearing. DO NOT nick 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.
Upper and lower Number 3 bearing halves are
flanged to carry the crankshaft thrust loads and are
NOT interchangeable with any other bearing halves
in the engine (Fig. 64). All bearing cap bolts removed
during service procedures are to be cleaned and oiled
before installation. Bearing shells are available in
standard and the following undersized: 0.016 mm
(.0006 inch), .032 mm (.0012 inch), .250 mm (.010
inch). Never install an undersize bearing that will
reduce clearance below specifications.
INSTALLATION
(1) Install the main bearing shells with the lubri-
cation groove in the cylinder block. Install O-ring
into recess in the block (Fig. 65).
(2) Make certain oil holes in block line up with oil
hole in bearings and bearing tabs seat in the block
tab slots.
CAUTION: Do Not get oil on the bedplate mating
surface. It will affect the sealer ability to seal the
bedplate to cylinder block.
Fig. 61 Crankshaft Seal Special Tool 6926-2
Fig. 62 Rear Crankshaft SealÐInstallation
9 - 22 ENGINENS/GS
REMOVAL AND INSTALLATION (Continued)

(3) Oil the bearings and journals and install
crankshaft and O-ring in cylinder block.
CAUTION: Use only the specified anaerobic sealer
on the bedplate or damage may occur to the
engine.
(4) Apply 1.5 to 2.0 mm (0.059 to 0.078 in.) bead of
Mopar Torque Cure Gasket Maker to cylinder block
as shown in (Fig. 66).
(5) Install lower main bearings into main bearing
cap/bedplate. Make certain the bearing tabs areseated into the bedplate slots. Install the main bear-
ing/bedplate into engine block.
(6) Before installing the bolts oil threads with
clean engine oil, wipe off any excess oil.
(7) Install main bearing bedplate to engine block
bolts 11, 17 and 20 finger tight. Tighten this bolts
down together until the bedplate contacts the cylin-
der block. Torque bolts to 30 N´m (22 ft. lbs.) (Fig.
67).
Fig. 63 Bedplate BoltsFig. 64 Main Bearing Identification
NS/GSENGINE 9 - 23
REMOVAL AND INSTALLATION (Continued)

(8) Install main bearing bedplate to engine block
bolts (1 thru 10) and torque each bolt to 81 N´m (60
ft. lbs.) in sequence shown in (Fig. 67).(9) Install main bearing bedplate to engine block
bolts (11 thru 20), with baffle studs in positions 12,
13 and 16 and torque each bolt to 30 N´m (22 ft. lbs.)
in sequence shown in (Fig. 67).
(10) After the main bearing bedplate is installed,
check the crankshaft turning torque. The turning
torque should not exceed 5.6 N´m (50 in. lbs.).
(11) Install oil pump. If crankshaft end play is to
be checked refer to service procedures in this section.
(12) Install crankshaft sprocket.
(13) Install oil filter adapter and filter.
(14) Install oil pan and collar. Refer to procedures
outlined in the section.
(15) Perform camshaft and crankshaft timing
relearn procedure as follows:
²Connect the DRB scan tool to the data link
(diagnostic) connector. This connector is located in
the passenger compartment; at the lower edge of
instrument panel; near the steering column.
²Turn the ignition switch on and access the ªmis-
cellaneousº screen.
²Select ªre-learn cam/crankº option and follow
directions on DRB screen.
OIL FILTER ADAPTER
REMOVE AND INSTALL
Ensure O-ring is in the groove on adapter. Align
roll pin into engine block and tighten assembly to 80
N´m (60 ft. lbs.) (Fig. 68).
OIL FILTER
REMOVE AND INSTALL
CAUTION: When servicing the oil filter (Fig. 69)
avoid deforming the filter, install tool band strap
against the seam at the base of the filter. The 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
Fig. 65 Installing Main Bearing Upper Shell
Fig. 66 Main Bearing Caps/Bedplate Sealing
Fig. 67 Main Bearing Caps/Bedplate Torque
Sequence
Fig. 68 Engine Oil Filter Adapter to Engine Block
9 - 24 ENGINENS/GS
REMOVAL AND INSTALLATION (Continued)

filter on until 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 Timing Belt Sys-
tem, in this section.
(3) Remove Oil Pan. Refer to Oil Pan Removal in
this section.
(4) Remove Crankshaft Sprocket using Special Tool
6793 and insert C-4685-C2 (Fig. 70).
(5) Remove oil pick-up tube.
(6) Remove oil pump (Fig. 71) and front crankshaft
seal.
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. 72). Install o±ring into oil pump body
discharge passage.
(3) Prime oil pump before installation.
(4) Align oil pump rotor flats with flats on crank-
shaft as you install the oil pump to the block.
NOTE: Front crankshaft seal MUST be out of pump
to align, or damage may result.
(5) Torque all oil pump attaching bolts to 28 N´m
(250 in. lbs.)
(6) Install new front crankshaft seal using Special
Tool 6780 (Fig. 73).
(7) Install crankshaft sprocket, using Special Tool
6792 (Fig. 74).
(8) Install oil pump pick-up tube and oil pan.
(9) Install Timing Belt. Refer to procedure outlined
in this section.
(10) Connect negative cable to battery.
PISTON AND CONNECTING ROD
REMOVAL
(1) Remove top ridge of cylinder bores with a reli-
able ridge reamer before removing pistons from cyl-
inder block.Be sure to keep tops of pistons
covered during this operation. Mark piston with
matching cylinder number (Fig. 75).
(2) Remove oil pan. Scribe the cylinder number on
the side of the rod and cap (Fig. 76) for identification.
(3) Pistons will have a stamping in the approxi-
mate location shown in (Fig. 75). These stamps will
be either a directional arrow or a weight identifica-
tion for the assembly. L is for light and H is for
heavy. These assemblies should all be the same
weight class. Service piston assemblies are marked
with a S and can be used with either L or H produc-
tion assemblies. The weight designation stamps
should face toward the timing belt side of the engine.
(4) Pistons and connecting rods must be removed
from top of cylinder block. Rotate crankshaft so that
each connecting rod is centered in cylinder bore.
(5) Remove connecting rod cap boltsDo not use
old bolts if reinstalling connecting rod.Push
each piston and rod assembly out of cylinder bore.
NOTE: Be careful not to nick crankshaft journals.
(6) After removal, install bearing cap on the mat-
ing rod.
(7) Piston and Rods are serviced as an assembly.
PISTON RINGÐREMOVAL
(1) ID mark on face of upper and intermediate pis-
ton rings must point toward piston crown.
Fig. 69 Engine Oil Filter
Fig. 70 Crankshaft SprocketÐRemoval
NS/GSENGINE 9 - 25
REMOVAL AND INSTALLATION (Continued)

(2) Using a suitable ring expander, remove upper
and intermediate piston rings (Fig. 77).
(3) Remove the upper oil ring side rail, lower oil
ring side rail and then oil ring expander from piston.
(4) Clean ring grooves of any carbon deposits.
PISTON RINGSÐINSTALLATION
(1) Install rings with manufacturers I.D. mark fac-
ing up, to the top of the piston (Fig. 78).
CAUTION: Install piston rings in the following
order:
a. Oil ring expander.b. Upper oil ring side rail.
c. Lower oil ring side rail.
d. No. 2 Intermediate piston ring.
Fig. 71 Oil Pump and Tube
Fig. 72 Oil Pump Sealing
Fig. 73 Front Crankshaft SealÐInstallation
9 - 26 ENGINENS/GS
REMOVAL AND INSTALLATION (Continued)

e. No. 1 Upper piston ring.
f. Install the side rail by placing one end between
the piston ring groove and the expander. Hold end
firmly and press down the portion to be installed
until side rail is in position.Do not use a piston
ring expander (Fig. 79).
(2) Install upper side rail first and then the lower
side rail.
(3) Install No. 2 piston ring and then No. 1 piston
ring (Fig. 78).(4) Position piston ring end gaps as shown in (Fig.
80).
(5) Position oil ring expander gap at least 45É from
the side rail gaps butnoton the piston pin center or
Fig. 74 Crankshaft SprocketÐInstallation
Fig. 75 Piston Markings
Fig. 76 Identify Connecting Rod to Cylinder
Fig. 77 Piston RingsÐRemoving and Installing
Fig. 78 Piston Ring Installation
Fig. 79 Installing Side Rail
NS/GSENGINE 9 - 27
REMOVAL AND INSTALLATION (Continued)

on the thrust direction. Staggering ring gap is impor-
tant for oil control.
PISTON AND ROD ÐINSTALLATION
(1) Before installing pistons and connecting rod
assemblies into the bore, be sure that compression
ring gaps are staggered so that neither is in line with
oil ring rail gap.
(2) Before installing the ring compressor, make
sure the oil ring expander ends are butted and the
rail gaps located as shown in (Fig. 80).
(3) Immerse the piston head and rings in clean
engine oil, slide the ring compressor, over the piston
(Fig. 81).Be sure position of rings does not
change during this operation.
(4) The weight stamp designation L or H will be in
the front half of the piston should face toward the
front of the engine for SOHC engine. The arrow
should face toward the front of the engine for DOHC
engine (Fig. 75).
(5) Rotate crankshaft so that the connecting rod
journal is on the center of the cylinder bore. Insertrod and piston assembly into cylinder bore and guide
rod over the crankshaft journal.
(6) Tap the piston down in cylinder bore, using a
hammer handle. At the same time, guide connecting
rod into position on connecting rod journal.
(7) Install rod caps. InstallNewbolts and tighten
to 27 N´m (20 ft.lb.) Plus 1/4 turn.
VIBRATION DAMPER
NOTE: If a gap is found in the crankshaft damper,
in the area where the Poly-V Generator belt rides
this is normal and is acceptable (Fig. 82).
REMOVAL
(1) Remove accessory drive belts. Refer to Group 7,
Cooling System for procedure outlined in that sec-
tion.
(2) Remove crankshaft damper bolt. Remove
damper using the large side of Special Tool 1026 and
insert 6827±A (Fig. 83).
Fig. 80 Piston Ring End Gap Position
Fig. 81 Installing Piston
Fig. 82 Weld Gap
Fig. 83 Crankshaft DamperÐRemoval
9 - 28 ENGINENS/GS
REMOVAL AND INSTALLATION (Continued)

INSTALLATION
(1) Install crankshaft damper using M12-1.75 x
150 mm bolt, washer, thrust bearing and nut from
Special Tool 6792. Install crankshaft damper bolt and
tighten to 142 N´m (105 ft. lbs.) (Fig. 84).
(2) Install accessory drive belts. Refer to Group 7,
Cooling System Accessory Drive section for proce-
dure.
DISASSEMBLY AND ASSEMBLY
OIL PUMP
(1) To remove the relief valve, proceed as follows:
(2) Remove the threaded plug and gasket from the
oil pump (Fig. 85).
CAUTION: Oil pump pressure relief valve must be
installed as shown in (Fig. 85) or serious damage
may occur.
(3) Remove spring and relief valve (Fig. 85).(4) Remove oil pump cover screws, and lift off
cover.
(5) Remove pump rotors.
(6) Wash all parts in a suitable solvent and inspect
carefully for damage or wear (Fig. 86).
VALVE SERVICE WITH THE CYLINDER HEAD
REMOVED
REMOVAL
(1) With cylinder head removed, compress valve
springs using Special Tool C-3422-B or equivalent.
(2) Remove valve retaining locks, valve spring
retainers, valve stem seals and valve springs.
(3) Before removing valves,remove any burrs
from valve stem lock grooves to prevent dam-
age to the valve guides.Identify valves to insure
installation in original location.
VALVE INSPECTION
(1) Clean valves thoroughly and discard burned,
warped and cracked valves.
(2) Measure valve stems for wear. Measure stem
about 60 mm beneath the valve lock grooves.
(3) If valve stems are worn more than 0.05 mm
(.002 in.), replace valve.
VALVE GUIDES
(1) Remove carbon and varnish deposits from
inside of valve guides with a reliable guide cleaner.
(2) Using a small hole gauge and a micrometer,
measure valve guides in 3 places top, middle and bot-
tom (Fig. 87). Refer to Valve Guide Specification
Chart for specifications. Replace guides if they are
not within specification.
(3) Check valve guide height (Fig. 88).
TESTING VALVE SPRINGS
(1) Whenever valves have been removed for inspec-
tion, reconditioning or replacement, valve springs
Fig. 84 Crankshaft DamperÐInstallation
Fig. 85 Oil Pressure Relief Valve
Fig. 86 Oil Pump
NS/GSENGINE 9 - 29
REMOVAL AND INSTALLATION (Continued)

CAUTION: When depressing the valve spring
retainers with valve spring compressor the locks
can become dislocated. Check to make sure both
locks are in their correct location after removing
tool.
(4) Check the valve spring installed height B after
refacing the valve and seat (Fig. 92). Make sure mea-
surements are taken from top of spring seat to the
bottom surface of spring retainer. If height is greater
than 40.18 mm (1.58 in.), install a 0.762 mm (0.030
in.) spacer under the valve spring seat to bring
spring height back within specification.
(5) Install rocker arm shafts as previously
described in this section.
(6) Checking dry lash. Dry lash is the amount of
clearance that exists between the base circle of an
installed cam and the rocker arm roller when the
adjuster is drained of oil and completely collapsed.
Specified dry lash is 1.17 mm (0.046 in.) for intake
and 1.28 mm (0.050 in.) for exhaust. After performing
dry lash check, refill adjuster with oil and allow 10
minutes for adjuster/s to bleed down before rotating
cam.
CLEANING AND INSPECTION
CYLINDER HEAD AND CAMSHAFT JOURNALS
INSPECTING CYLINDER HEAD
Cylinder head must be flat within 0.1 mm (0.004
inch) (Fig. 94).
Inspect cylinder head camshaft bearings for wear.
Check camshaft journals for scratches and worn
areas. If light scratches are present, they may be
removed with 400 grit sand paper. If deep scratches
are present, replace the camshaft and check the cyl-
inder head for damage. Replace the cylinder head if
worn or damaged. Check the lobes for pitting and
wear. If the lobes show signs of wear, check the cor-
responding rocker arm roller for wear or damage.Replace rocker arm/hydraulic lash adjuster if worn or
damaged. If lobes show signs of pitting on the nose,
flank or base circle; replace the camshaft.
CLEANING
Remove all gasket material from cylinder head and
block. Be careful not to gouge or scratch the alumi-
num head sealing surface.
OIL PUMP
(1) Clean all parts thoroughly. Mating surface of
the oil pump should be smooth. Replace pump cover
if scratched or grooved.
(2) Lay a straightedge across the pump cover sur-
face (Fig. 95). If a 0.076 mm (0.003 inch.) 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 7.64 mm (0.301
inch.) or less (Fig. 96), or if the diameter is 79.95 mm
(3.148 inches) or less, replace outer rotor.
Fig. 93 Valve Stem Oil Seal Tool
Fig. 94 Checking Cylinder Head Flatness
Fig. 95 Checking Oil Pump Cover Flatness
9 - 32 ENGINENS/GS
DISASSEMBLY AND ASSEMBLY (Continued)

Cylinder Block
Diameter................20.998 - 21.003 mm
(0.8267 - 0.8269 in.)
End Play............................None
Length.....74.75 - 75.25 mm (2.943 - 2.963 in.)
Piston Rings
Ring Gap Top Compression Ring . . 0.23 - 0.52 mm
(0.009 - 0.020 in.)
Ring Gap 2nd Compression Ring . . 0.49 - 0.78 mm
(0.019 - 0.031 in.)
Ring Gap Oil Control
(Steel Rails) . . . 0.23 - 0.66 mm (0.009 - 0.026 in.)
Ring Side Clearance Both Compression
Rings....0.025 - 0.065 mm (0.0010 - 0.0026 in.)
Oil Ring (Pack).............0.004 - 0.178 mm
(0.0002 - 0.0070 in.)
Ring Width Compression Rings . . . 1.17 - 1.19 mm
(0.046 - 0.047 in.)
Oil Ring (Pack).............2.854 - 3.008 mm
(0.1124 - 0.1184 in.)
Connecting Rod
Bearing Clearance...........0.026 - 0.059 mm
(0.001 - 0.0023 in.)
Piston Pin Bore Diameter.....20.96 - 20.98 mm
(0.8252 - 0.8260 in.)
Large End Bore Diameter . . . 50.991 - 51.005 mm
(2.0075 - 2.0081 in.)
Side Clearance . 0.13 - 0.38 mm (0.005 - 0.015 in.)
Total Weight (Less Bearing) . 543 grams (1.20 lbs.)
Crankshaft
Connecting Rod Journal
Diameter . .
47.9924 - 48.0076 mm (1.8894 - 1.8900 in.)
Out-of-Round (Max.).....0.0035 mm (0.0001 in.)
Taper (Max.)...........0.0038 mm (0.0001 in.)
Main Bearing Diametrical Clearance
No.1-5 ..0.022 - 0.062 mm (0.0008 - 0.0024 in.)
End Play....0.09 - 0.24 mm (0.0035 - 0.0094 in.)
Main Bearing Journals
Diameter..............51.9924 - 52.0076 mm
(2.0469 - 2.0475 in.)
Out-of-Round (Max.).....0.0035 mm (0.0001 in.)
Taper (Max.)...........0.0038 mm (0.0001 in.)
ENGINE 2.0L SOHC
Rocker Arm Shaft
Rocker Arm Shaft Diameter . . 19.996 ± 19.984mm
(0.786 ± 0.7867 in.)
Rocker Arm Shaft Retainers (Width)
Intake (All)...............28.46 mm (1.12 in.)
Exhaust.............1&529.20 mm (1.14in.)
2, 3, and 4 - 40.45 mm (1.59 in.)
Rocker Arm/Hydraulic Lash Adjuster *
Rocker Arm Inside Diameter . . 20.00 ± 20.02 mm
(0.787 ± 0.788 in.)Rocker Arm Shaft Clearance . . . 0.016 ± 0.054 mm
(0.0006 ± 0.0021 in.)
Body Diameter...........22.949 ± 22.962 mm
(0.9035 ± 0.9040 in.)
Plunger Travel Minimum (Dry).........2.2mm
(0.087 in.)
Rocker Arm Ratio...................1.4to1
Cylinder Head Camshaft Bearing Diameter
No.1 ....41.20 ± 41.221 mm (1.622 ± 1.6228 in.)
No.2 ......41.6 ± 41.621 mm (1.637 ± 1.638 in.)
No.3 ......42.0 ± 42.021 mm (1.653 ± 1.654 in.)
No.4 ......42.4 ± 42.421 mm (1.669 ± 1.670 in.)
No.5 .....42.8 ± 42.821 mm (1.685 ± 1.6858 in.)
Camshaft Journal Diameter
No. 1 . . . 41.128 ± 41.147 mm (1.619 ± 1.6199 in.)
No.2 ....41.528 ± 41.547 mm (1.634 ± 1.635 in.)
No.3 ....41.928 ± 41.947 mm (1.650 ± 1.651 in.)
No.4 ....42.328 ± 42.374 mm (1.666 ± 1.668 in.)
No. 5 . . . 42.728 ± 42.747 mm (1.682 ± 1.6829 in.)
Diametrical Bearing Clearance . 0.053 ± 0.093 mm
(0.0027 ± 0.003 in.)
Max. Allowable...........0.12 mm (0.0047 in.)
End Play..........0.05 ± 0.39 mm (0.0059 in.)
Lift (Zero Lash )
Intake...................7.2mm(0.283 in.)
Exhaust.................7.03 mm (0.277 in.)
Valve Timing Exhaust Valve**
Closes (ATDC)........................5.4É
Opens (BBDC).......................43.7É
Duration...........................229.1É
Valve Timing Intake Valve **
Closes (ABDC).......................41.1É
Opens (ATDC)........................13.9É
Duration...........................207.2É
Valve Overlap..........................0É
Cylinder Head
Material....................Cast Aluminum
Gasket Thickness (Compressed).......1.15 mm
(0.045 in.)
Valve Seat
Angle................................45É
Runout (Max.)..............0.050 mm (0.002)
Width (Finish) Intake and
Exhaust.....0.75 ± 1.25 mm (0.030 ± 0.049 in.)
Valve Guide Finished
Diameter I.D. . 5.975 ± 6.000 mm (.235 ± .236 in.)
Guide Bore Diameter (Std.).....11.0±11.02 mm
(0.4330 ± 0.4338 in.)
Valves
Face Angle Intake and Exhaust.....45±45-1/2É
Head Diameter Intake.......32.12 ± 33.37 mm
(1.303 ± 1.313 in.)
Head Diameter Exhaust......28.57 ± 28.83 mm
(1.124 ± 1.135 in.)
NS/GSENGINE 9 - 35
SPECIFICATIONS (Continued)