2004 CHRYSLER VOYAGER check engine

INSTALLATION
INSTALLATION - CYLINDER HEAD ON
(1) Install valve seal/valve spring seat assembly
(Fig. 34). Push the assembly down to seat it onto the
valve guide.
(2) Install valve spring and retainer, use Special
Tool MD-998772-A with adapter 6779 to compress
valve springs only enough to install locks (Fig. 33).
Correct alignment of tool is necessary to avoid nick-
ing valve stems.
(3) Remove air hose and install spark plugs.
(4) Install camshafts (Refer to 9 - ENGINE/CYL-
INDER HEAD/CAMSHAFT(S) - INSTALLATION).
(5) Install cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER - INSTALLATION).
INSTALLATION - CYLINDER HEAD OFF
(1) Coat valve stems with clean engine oil and
insert in cylinder head.
(2) Install new valve stem seals on all valves
using a valve stem seal tool (Fig. 35). The valve stem
seals should be pushed firmly and squarely over
valve guide.
CAUTION: When oversize valves are used, the cor-
responding oversize valve seal must also be used.
Excessive guide wear may result if oversize seals
are not used with oversize valves.(3) Install valve springs and retainers. Compress
valve springs only enough to install locks, taking
care not to misalign the direction of compression.
Nicked valve stems may result from misalignment of
the valve spring compressor.
CAUTION: When depressing the valve spring retain-
ers with valve spring compressor the locks can
become dislocated. Ensure both locks are in the
correct location after removing tool.
(4) Check the valve spring installed height B after
refacing the valve and seat (Fig. 36). Make sure mea-
surements are taken from top of spring seat to the
bottom surface of spring retainer. If height is greater
than 38.75 mm (1.525 in.), install a 0.762 mm (0.030
in.) spacer under the valve spring seat to bring
spring height back within specification.
Fig. 34 Valve Stem Seal/Valve Spring Seat
1 - VALVE RETAINING LOCKS
2 - VALVE SPRING
3 - VALVE SEAL AND VALVE SPRING SEAT ASSEMBLY
4 - VALVE SPRING RETAINER
Fig. 35 Valve Stem Oil Seal Tool
1 - VALVE SEAL TOOL
2 - VALVE STEM
Fig. 36 Checking Spring Installed Height and Valve
Tip Height Dimensions
1 - GARTER SPRING
2 - VALVE SPRING SEAT
3 - CYLINDER HEAD SURFACE
RSENGINE 2.4L9-33
VALVE SPRINGS & SEALS (Continued)

HYDRAULIC LASH
ADJUSTERS
DIAGNOSIS AND TESTING - HYDRAULIC LASH
ADJUSTER NOISE DIAGNOSIS
A tappet-like noise may be produced from several
items. Check the following items.
(1) Engine oil level too high or too low. This may
cause aerated oil to enter the adjusters and cause
them to be spongy.
(2) Insufficient running time after rebuilding cylin-
der head. Low speed running up to 1 hour may be
required.
(3) During this time, turn engine off and let set for
a few minutes before restarting. Repeat this several
times after engine has reached normal operating
temperature.
(4) Low oil pressure.
(5) The oil restrictor (integral to the head gasket)
in the vertical oil passage to the cylinder head is
plugged with debris.
(6) Air ingested into oil due to broken or cracked
oil pump pick up.
(7) Worn valve guides.
(8) Rocker arm ears contacting valve spring
retainer.
(9) Rocker arm loose, adjuster stuck or at maxi-
mum extension and still leaves lash in the system.
(10) Faulty lash adjuster.
²Check lash adjusters for sponginess while
installed in cylinder head. Depress part of rocker
arm over adjuster. Normal adjusters should feel very
firm. Spongy adjusters can be bottomed out easily.
²Remove suspected lash adjusters, and replace as
necessary.
REMOVAL
NOTE: This procedure is for in-vehicle service with
camshafts installed.
(1) Remove cylinder head cover. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL)
(2) Remove rocker arm. (Refer to 9 - ENGINE/
CYLINDER HEAD/ROCKER ARMS - REMOVAL)
(3) Remove hydraulic lash adjuster (Fig. 37).
(4) Repeat removal procedure for each hydraulic
lash adjuster.
(5) If reusing, mark each hydraulic lash adjuster
for reassembly in original position. Lash adjusters
are serviced as an assembly.
INSTALLATION
(1) Install hydraulic lash adjuster (Fig. 37).
Ensure the lash adjusters are at least partially full of
engine oil. This is indicated by little or no plunger
travel when the lifter is depressed.
(2) Install rocker arm. (Refer to 9 - ENGINE/CYL-
INDER HEAD/ROCKER ARMS - INSTALLATION)
(3) Repeat installation procedure for each hydrau-
lic lash adjuster.
(4) Install cylinder head cover. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION)
ROCKER ARMS
REMOVAL
NOTE: This procedure is for in-vehicle service with
camshafts installed.
(1) Remove cylinder head cover. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL)
(2) Remove spark plugs.
(3) Rotate engine until the camshaft lobe, on the
follower being removed, is positioned on its base cir-
cle (heel). Also, the piston should be a minimum of
6.3 mm (0.25 in) below TDC position.
CAUTION: If cam follower assemblies are to be
reused, always mark position for reassembly in
their original positions.
(4) Using Special Tools 8215A and 8436 slowly
depress valve assembly until rocker arm can be
removed (Fig. 38).
(5) Repeat removal procedure for each rocker arm.
Fig. 37 Hydraulic Lash Adjuster
9 - 34 ENGINE 2.4LRS

(4) A controlled hone motor speed between
200±300 RPM is necessary to obtain the proper cross-
hatch angle. The number of up and down strokes per
minute can be regulated to get the desired 40±60
degree angle. Faster up and down strokes increase
the cross-hatch angle.
(5) After honing, it is necessary that the block be
cleaned again to remove all traces of abrasive.
CAUTION: Ensure all abrasives are removed from
engine parts after honing. It is recommended that a
solution of soap and hot water be used with a
brush and the parts then thoroughly dried. The bore
can be considered clean when it can be wiped
clean with a white cloth and cloth remains clean.
Oil the bores after cleaning to prevent rusting.
CLEANING
Clean cylinder block thoroughly using a suitable
cleaning solvent.
INSPECTION
ENGINE BLOCK
(1) Clean cylinder block thoroughly and check all
core hole plugs for evidence of leaking.
(2) If new core plugs are to be installed, (Refer to 9
- ENGINE - STANDARD PROCEDURE - ENGINE
CORE AND OIL GALLERY PLUGS).
(3) Examine block and cylinder bores for cracks or
fractures.(4) Check block deck surfaces for flatness. Deck
surface must be within service limit of 0.1 mm (0.004
in.).
CYLINDER BORE
NOTE: The cylinder bores should be measured at
normal room temperature, 21ÉC (70ÉF).
The cylinder walls should be checked for out-of-
round and taper with Tool C119 or equivalent (Fig.
42) (Refer to 9 - ENGINE - SPECIFICATIONS). 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. 42). 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 9 - ENGINE - SPECIFICATIONS).
CRANKSHAFT
STANDARD PROCEDURE - 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. 43).
(2) Move crankshaft all the way to the rear of its
travel.
(3) Zero the dial indicator.
Fig. 41 Cylinder Bore Cross-Hatch Pattern
1 - CROSS-HATCH PATTERN
2 - 40ɱ60É
Fig. 42 Checking Cylinder Bore Size
9 - 36 ENGINE 2.4LRS
ENGINE BLOCK (Continued)

(4) Move crankshaft all the way to the front and
read the dial indicator. Refer to Engine Specifica-
tions.
REMOVAL - CRANKSHAFT
NOTE: Crankshaft can not be removed when engine
is in vehicle.
(1) Remove engine assembly from vehicle (Refer to
9 - ENGINE - REMOVAL).
(2) Separate transaxle from engine.
(3) Remove drive plate/flex plate.
(4) Remove crankshaft rear oil seal (Refer to 9 -
ENGINE/ENGINE BLOCK/CRANKSHAFT OIL
SEAL - REAR - REMOVAL).
(5) Mount engine on a suitable repair stand.
(6) Drain engine oil and remove oil filter.
(7) Remove crankshaft vibration damper (Refer to
9 - ENGINE/ENGINE BLOCK/VIBRATION
DAMPER - REMOVAL).
(8) Remove engine mount support bracket.
(9) Remove front timing belt covers (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT COVER(S)
- REMOVAL).
(10) Remove the timing belt (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT AND SPROCKETS -
REMOVAL).
(11) Remove the oil pan (Refer to 9 - ENGINE/LU-
BRICATION/OIL PAN - REMOVAL).
(12) Remove oil pump pick-up tube.
(13) Remove the crankshaft sprocket and oil pump
(Refer to 9 - ENGINE/LUBRICATION/OIL PUMP -
REMOVAL).
(14) Remove balance shafts and housing assembly
(Refer to 9 - ENGINE/VALVE TIMING/BALANCE
SHAFT - REMOVAL).
(15) Remove crankshaft position sensor.NOTE: If piston/connecting rod replacement is nec-
essary, remove cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
(16) Using a permanent ink or paint marker, iden-
tify cylinder number on each connecting rod cap (Fig.
44).
CAUTION: DO NOT use a number stamp or a punch
to mark connecting rods. Damage to connecting
rod could occur.
(17) Remove all connecting rod bolts and caps.
Care should be taken not to damage the fracture rod
and cap surfaces.
NOTE: Do not reuse connecting rod bolts.
(18) Remove all bedplate bolts from the engine
block (Fig. 45).
(19) Using a mallet gently tap the bedplate loose
from the engine block dowel pins.
CAUTION: Do not pry up on one side of the bed-
plate. Damage may occur to cylinder block to bed-
plate alignment and thrust bearing.
(20) Bedplate should be removed evenly from the
cylinder block dowel pins to prevent damage to the
dowel pins and thrust bearing.
CAUTION: Use extreme care when handling crank-
shaft. Tone wheel damage can occur if crankshaft is
mis-handled.
(21) Lift out crankshaft from cylinder block. Do
not damage the main bearings or journals when
removing the crankshaft.
INSPECTION
For crankshaft specifications (Refer to 9 - ENGINE
- SPECIFICATIONS).
Fig. 43 CHECKING CRANKSHAFT END PLAY
Fig. 44 Identify Connecting Rod to Cylinder
RSENGINE 2.4L9-37
CRANKSHAFT (Continued)

The crankshaft journals should be checked for
excessive wear, taper and scoring (Fig. 46). Limits of
taper or out of round on any crankshaft journals
should be held to 0.025 mm (0.001 in.). Journal
grinding should not exceed 0.305 mm (0.012 in.)
under the standard journal diameter. DO NOT grind
thrust faces of No. 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, it
is important that the final paper or cloth polish be
in the same direction as normal rotation in the
engine.
The crankshaft is supported in five main bearings.
All upper and lower bearing shells in the crankcase
have oil grooves. Crankshaft end play is controlled by
a flanged bearing on the number three main bearing
journal (Fig. 47).
Upper and lower Number 3 bearing halves are
flanged to carry the crankshaft thrust loads and are
NOTinterchangeable with any other bearing halves
in the engine (Fig. 47). All bearing cap bolts removedduring service procedures are to be cleaned and oiled
before installation. Bearing shells are available in
standard and the following undersized: 0.025 mm
(0.001 in.) and 0.250 mm (0.010 in.). Never install an
undersize bearing that will reduce clearance below
specifications. Replace or machine the crankshaft as
necessary to obtain proper bearing clearances.
INSTALLATION - CRANKSHAFT
CRANKSHAFT MAIN BEARING LOCATION
The crankshaft is supported in five main bearings.
All upper and lower bearing shells in the crankcase
have oil grooves and holes (Fig. 48). Crankshaft end
play is controlled by a flanged bearing on the number
three main bearing journal.
Fig. 45 Bedplate Bolt Tightenening Sequence
Fig. 46 Crankshaft Journal Measurements
Fig. 47 Main Bearing Identification
1 - OIL GROOVE
2 - MAIN BEARINGS
3 - OIL HOLE
Fig. 48 Main Bearing Identification
1 - OIL GROOVE
2 - MAIN BEARINGS
3 - OIL HOLE
9 - 38 ENGINE 2.4LRS
CRANKSHAFT (Continued)

(13) 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.).
(14) Check crankshaft end play (Refer to 9 -
ENGINE/ENGINE BLOCK/CRANKSHAFT - STAN-
DARD PROCEDURE).
(15) Install connecting rod bearings and caps.Do
Not Reuse Connecting Rod Bolts.Torque connect-
ing rod bolts to 27 N´m (20 ft. lbs.) plus 1/4 turn.
(16) Install balance shafts and housing assembly
(Refer to 9 - ENGINE/VALVE TIMING/BALANCE
SHAFT - INSTALLATION).
(17) Install the oil pump (Refer to 9 - ENGINE/
LUBRICATION/OIL PUMP - INSTALLATION).
(18) Install oil pump pick-up tube. Torque fastener
to 28 N´m (20 ft.. lbs.).
(19) Install the oil pan (Refer to 9 - ENGINE/LU-
BRICATION/OIL PAN - INSTALLATION).
(20) Install crankshaft position sensor.
(21) Install cylinder head if it was removed (Refer
to 9 - ENGINE/CYLINDER HEAD - INSTALLA-
TION).
(22) Install the timing belt rear cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT COVER(S)
- INSTALLATION).
(23) Install crankshaft sprocket (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT AND
SPROCKETS - INSTALLATION).
(24) Install the timing belt (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT AND SPROCKETS -
INSTALLATION).
(25) Install the timing belt front covers (Refer to 9
- ENGINE/VALVE TIMING/TIMING BELT COV-
ER(S) - INSTALLATION).
(26) Install engine mount support bracket.
(27) InstallNEWoil filter.
(28) Install crankshaft rear oil seal (Refer to 9 -
ENGINE/ENGINE BLOCK/CRANKSHAFT OIL
SEAL - REAR - INSTALLATION).
(29) Install flex plate. Apply MopartLock & Seal
Adhesive to bolt threads and tighten to 95 N´m (70
ft. lbs.).
(30) Attach transaxle to engine. Tighten attaching
bolts to 101 N´m (75 ft. lbs.).
(31) Install the engine assembly (Refer to 9 -
ENGINE - INSTALLATION).
CRANKSHAFT OIL SEAL -
FRONT
REMOVAL
(1) Remove the crankshaft vibration damper.
(Refer to 9 - ENGINE/ENGINE BLOCK/VIBRATION
DAMPER - REMOVAL)(2) Remove timing belt. (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT/CHAIN AND
SPROCKETS - REMOVAL)
(3) Remove crankshaft sprocket using Special Tool
6793 and insert C-4685-C2 (Fig. 52).
CAUTION: Do not nick shaft seal surface or seal
bore.
(4) Using Tool 6771 to remove front crankshaft oil
seal (Fig. 53). Be careful not to damage the seal sur-
face of cover.
INSTALLATION
(1) Install new seal by using Special Tool 6780
(Fig. 54).
(2) Place seal into opening with seal spring
towards the inside of engine. Install seal until flush
with cover.
Fig. 52 Crankshaft Sprocket - Removal
1 - SPECIAL TOOL 6793
2 - SPECIAL TOOL C-4685±C2
3 - CRANKSHAFT SPROCKET
Fig. 53 Front Crankshaft Oil Seal - Removal
1 - SPECIAL TOOL 6771
2 - REAR TIMING BELT COVER
9 - 40 ENGINE 2.4LRS
CRANKSHAFT (Continued)

Cylinder bores should be measured halfway down
the cylinder bore and transverse (measurement loca-
tion B) to the engine crankshaft center line shown in
(Fig. 61). Refer to for Engine Specifications (Refer to
9 - ENGINE - SPECIFICATIONS). Correct piston to
bore clearance must be established in order to assure
quiet and economical operation.
REMOVAL
(1) Remove cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
(2) Remove oil pan (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - REMOVAL).
(3) Remove Balance Shaft Carrier Assembly (Refer
to 9 - ENGINE/VALVE TIMING/BALANCE SHAFT
CARRIER - REMOVAL).
(4) 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.
(5) Pistons have a directional stamping in the
front half of the piston facing towards thefrontof
engine (Fig. 62).
Fig. 59 Rear Crankshaft SealÐInstallation
1 - SPECIAL TOOL 6926±2 INSTALLER
Fig. 60 Piston Measurement
1 - PISTON DIAMETER
2 - 14 mm (0.551 in.)
Fig. 61 Checking Cylinder Bore
Fig. 62 Piston Markings
1 - DIRECTIONAL ARROW WILL BE IMPRINTED IN THIS AREA
RSENGINE 2.4L9-43
PISTON & CONNECTING ROD (Continued)

(7) Install connecting rod upper bearing half into
connecting rod. Install Special Tool 8189, connecting
rod guides onto connecting rod (Fig. 64).
(8) Tap the piston down in cylinder bore, using a
hammer handle. At the same time, guide connecting
rod into position on connecting rod journal.
(9) Remove Special Tool 8189, connecting rod
guides.
NOTE: The connecting rod cap bolts should not be
reused.
(10) Before installing theNEWbolts, the threads
should be coated with clean engine oil.
(11) Install connecting rod lower bearing half into
connecting rod cap. Install connecting rod cap.
(12) Install each bolt finger tight then alternately
torque each bolt to assemble the cap properly.
(13) Tighten the connecting rod bolts using the 2
step torque-turn method. Tighten according to the
following values:
CAUTION: Do not use a torque wrench for the sec-
ond step.
1. Tighten the bolts to 27 N´m (20 ft. lbs.).
2. Tighten the connecting rod bolts an additional
1/4 TURN.
(14) Using a feeler gauge, check connecting rod
side clearance (Fig. 67). (Refer to 9 - ENGINE -
SPECIFICATIONS) for connecting rod side clearance.
(15) Install Balance Shaft Carrier Assembly (Refer
to 9 - ENGINE/VALVE TIMING/BALANCE SHAFT
CARRIER - INSTALLATION).
(16) Install oil pan (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - INSTALLATION).
(17) Install cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - INSTALLATION).
CONNECTING ROD BEARINGS
STANDARD PROCEDURE
CONNECTING ROD - FITTING
(1) For measuring connecting rod bearing clear-
ance procedure and use of Plastigage (Refer to 9 -
ENGINE - STANDARD PROCEDURE). For bearing
clearance refer to Engine Specifications. (Refer to 9 -
ENGINE - SPECIFICATIONS)
NOTE: The rod bearing bolts should not be reused.
(2) Before installing theNEWbolts the threads
should be oiled with clean engine oil.
(3) Install each bolt finger tight then alternately
torque each bolt to assemble the cap properly.
(4) Tighten the connecting rod bolts using the 2
step torque-turn method. Tighten according to the
following values:
CAUTION: Do not use a torque wrench for the sec-
ond step.
1. Tighten the bolts to 27 N´m (20 ft. lbs.).
2. Tighten the connecting rod bolts an additional
1/4 TURN.
(5) Using a feeler gauge, check connecting rod side
clearance (Fig. 67). Refer to clearance specifications
(Refer to 9 - ENGINE - SPECIFICATIONS).
PISTON RINGS
STANDARD PROCEDURE
PISTON RING - FITTING
(1) Wipe cylinder bore clean. Insert ring and push
down with piston to ensure it is square in bore. The
Fig. 66 PistonÐInstallation
Fig. 67 Connecting Rod Side Clearance
RSENGINE 2.4L9-45
PISTON & CONNECTING ROD (Continued)