2005 CHRYSLER CARAVAN tow

AIR CLEANER ELEMENT
REMOVAL
(1) Unsnap 2 clips.
(2) Lift cover and pull toward the engine and
remove cover tabs from air box.
(3) Lift cover and remove the element (Fig. 11).
INSTALLATION
(1) Install the air filter element into air box (Fig.
11).
(2) Move cover so that the tabs insert into the air
box.
(3) Push cover down and snap the 2 clips.
Combustion Leak Tester C-3685-A
Pressure Transducer CH7059
Cylinder Compression Pressure Adaptor 8116
DRB IIITwith PEP Module OT-CH6010A
Fig. 11 Air Box Cover
9 - 24 ENGINE 2.4LRS
ENGINE 2.4L (Continued)

AIR CLEANER HOUSING
REMOVAL
(1) Disconnect the negative battery cable.
(2) Disconnect the inlet air temperature sensor
(Fig. 12).
(3) Remove the inlet hose to throttle body (Fig. 11).
(4) Remove the bolt for air box at upper radiator
cross member.
(5) Pull air box up and off over the single locating
pin.
(6) Remove air box from vehicle
INSTALLATION
(1) Install air box into vehicle and onto the locat-
ing pin.
(2) Install bolt to hold air box to the upper radia-
tor cross member.
(3) Install the inlet hose to the throttle body.
(4) Connect the inlet air temperature sensor (Fig.
12).
(5) Connect the negative battery cable.
CYLINDER HEAD
DESCRIPTION
The cross flow designed, aluminum cylinder head
contains dual over-head camshafts with four valves
per cylinder (Fig. 13). The valves are arranged in two
in-line banks. The intake valves face toward the
front of the vehicle. The exhaust valves face the dash
panel. The cylinder head incorporates powdered
metal valve guides and seats. The cylinder head is
sealed to the block using a multi-layer steel head
gasket and retaining bolts.Integral oil galleries provide lubrication passages
to the hydraulic lash adjusters, camshafts, and valve
mechanisms.
DIAGNOSIS AND TESTINGÐCYLINDER HEAD
GASKET
A cylinder head gasket leak can be located between
adjacent cylinders or between a cylinder and the
adjacent water jacket.
Possible indications of the cylinder head gasket
leaking between adjacent cylinders are:
²Loss of engine power
²Engine misfiring
²Poor fuel economy
Possible indications of the cylinder head gasket
leaking between a cylinder and an adjacent water
jacket are:
²Engine overheating
²Loss of coolant
²Excessive steam (white smoke) emitting from
exhaust
²Coolant foaming
Fig. 12 IAT Sensor 2.4L
Fig. 13 Cylinder Head and Camshafts
1 - CAMSHAFT BEARING CAPS
2 - PLUG
3 - CAMSHAFT
4 - CYLINDER HEAD
5 - CAMSHAFT OIL SEAL
RSENGINE 2.4L9-25

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.
(3) Install crankshaft sprocket using Special Tool
6792 (Fig. 55).
(4) Install timing belt. (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT/CHAIN AND
SPROCKETS - INSTALLATION)
(5) Install crankshaft vibration damper. (Refer to 9
- ENGINE/ENGINE BLOCK/VIBRATION DAMPER -
INSTALLATION)
CRANKSHAFT OIL SEAL -
REAR
REMOVAL
(1) Remove transaxle. Refer to TRANSMISSION/
TRANSAXLE - REMOVAL for procedure.
(2) Remove flex plate.
(3) Insert a 3/16 flat bladed screwdriver between
the dust lip and the metal case of the crankshaft
seal. Angle the screwdriver (Fig. 56)through the dust
lip against metal case of the seal. Pry out seal.
CAUTION: Do not permit the screwdriver blade to
contact crankshaft seal surface. Contact of the
screwdriver blade against crankshaft edge (cham-
fer) is permitted.
INSTALLATION
CAUTION: If a burr or scratch is present on the
crankshaft edge (chamfer), cleanup with 400 grit
sand paper to prevent seal damage during installa-
tion of new seal.
Fig. 54 Crankshaft Front Oil Seal - Installation
1 - PROTECTOR
2 - SEAL
3 - SPECIAL TOOL 6780
Fig. 55 Crankshaft Sprocket - Installation
1 - SPECIAL TOOL 6792
2 - TIGHTEN NUT TO INSTALL
9 - 42 ENGINE 2.4LRS
CRANKSHAFT OIL SEAL - FRONT (Continued)

NOTE: When installing seal, no lube on seal is
needed.
(1) Place Special Tool 6926-1 Seal Guide on crank-
shaft (Fig. 57).
(2) Position seal over guide tool (Fig. 57). Guide
tool should remain on crankshaft during installation
of seal. Ensure that the lip of the seal is facing
towards the crankcase during installation.
CAUTION: If the seal is driven into the block past
flush, this may cause an oil leak.
(3) Drive the seal into the block using Special Tool
6926-2 and handle C-4171 (Fig. 58) until the tool bot-
toms out against the block (Fig. 59).
(4) Install flex plate. Apply MopartLock & Seal
Adhesive to bolt threads and tighten bolts to 95 N´m
(70 ft. lbs.).
(5) Install transaxle. Refer to TRANSMISSION/
TRANSAXLE - INSTALLATION for procedure.
Fig. 56 Rear Crankshaft Oil Seal - Removal
1 - REAR CRANKSHAFT SEAL
2 - ENGINE BLOCK
3 - ENGINE BLOCK
4 - REAR CRANKSHAFT SEAL METAL CASE
5 - PRY IN THIS DIRECTION
6 - CRANKSHAFT
7 - SCREWDRIVER
8 - REAR CRANKSHAFT SEAL DUST LIP
9 - SCREWDRIVER
Fig. 57 Rear Crankshaft Seal and Special Tool
6926-1
1 - SPECIAL TOOL 6926±1 PILOT
2 - SEAL
Fig. 58 Crankshaft Seal and Special Tools 6926-2 &
C-4171
1 - SPECIAL TOOL 6926±1 PILOT
2 - SEAL
3 - SPECIAL TOOL 6926±2 INSTALLER
4 - SPECIAL TOOL C-4171
RSENGINE 2.4L9-43
CRANKSHAFT OIL SEAL - REAR (Continued)

PISTON & CONNECTING ROD
DESCRIPTION
The pistons are made of a cast aluminum alloy.
The pistons have pressed-in pins attached to forged
powdered metal connecting rods. The pistons pin is
offset 1 mm (0.0394 in.) towards the thrust side of
the piston. The connecting rods are a cracked cap
design and are not repairable. Hex head cap screws
are used to provide alignment and durability in the
assembly. The pistons and connecting rods are ser-
viced as an assembly.
STANDARD PROCEDURE - PISTON TO
CYLINDER BORE FITTING
NOTE: Pistons and cylinder bores should be mea-
sured at normal room temperature, 21ÉC (70ÉF).
Piston and cylinder wall must be clean and dry.
Piston diameter should be measured 90 degrees to
piston pin.
Piston measurement should be taken approxi-
mately 14 mm (0.551 in.) from the bottom of the skirt
as shown in (Fig. 60)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).
Fig. 59 Rear Crankshaft Seal - Installation
1 - SPECIAL TOOL 6926±2 INSTALLER
Fig. 60 Piston Measurement
1 - PISTON DIAMETER
2 - 14 mm (0.551 in.)
Fig. 61 Checking Cylinder Bore
9 - 44 ENGINE 2.4LRS
CRANKSHAFT OIL SEAL - REAR (Continued)

(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).
(6) Pistons and connecting rods must be removed
from top of cylinder block. Rotate crankshaft so that
each connecting rod is centered in cylinder bore.
(7) Using a permanent ink or paint marker, iden-
tify cylinder number on each connecting rod cap (Fig.
63).
CAUTION: DO NOT use a number stamp or a punch
to mark connecting rods. Damage to connecting
rod could occur.
(8) Remove connecting rod bolts and cap. Care
should be taken not to damage the fracture rod and
cap surfaces.
NOTE: Do not reuse connecting rod bolts.
CAUTION: Care must be taken not to damage the
fractured rod and cap joint surfaces, as engine
damage many occur.
(9) To protect crankshaft journal and fractured rod
surfaces, install Special Tool 8189, connecting rod
guides onto connecting rod (Fig. 64). Carefully push
each piston and rod assembly out of cylinder bore.
(10) Remove Special Tool 8189, connecting rod
guides and re-install bearing cap on the mating rod.
NOTE: Piston and rods are serviced as an assem-
bly.(11) Repeat procedure for each piston and connect-
ing rod assembly.
(12) Remove piston rings (Refer to 9 - ENGINE/
ENGINE BLOCK/PISTON RINGS - REMOVAL).
INSTALLATION
(1) Install piston rings on piston (Refer to 9 -
ENGINE/ENGINE BLOCK/PISTON RINGS -
INSTALLATION)
(2) 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 (Fig. 65).
(3) Before installing the ring compressor, make
sure the oil ring expander ends are butted and the
rail gaps located as shown in (Fig. 65). As viewed
from top.
(4) Immerse the piston head and rings in clean
engine oil, slide the ring compressor, over the piston
(Fig. 66).Be sure position of rings does not
change during this operation.
(5) The directional stamp on the piston should face
toward the front of the engine (Fig. 62).
Fig. 62 Piston Markings
1 - DIRECTIONAL ARROW WILL BE IMPRINTED IN THIS AREA
Fig. 63 Identify Connectng Rod to Cylinder - Typical
Fig. 64 Connecting Rod Guides - Typical
1 - SPECIAL TOOL 8189 CONNECTING ROD GUIDES
RSENGINE 2.4L9-45
PISTON & CONNECTING ROD (Continued)

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. 68). 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
ring gap measurement must be made with the ring
positioning at least 12 mm (0.50 inch) from bottom of
cylinder bore. Check gap with feeler gauge (Fig. 69).
Refer to Engine Specifications.
(2) Check piston ring to groove side clearance (Fig.
70). Refer to Engine Specifications.
REMOVAL
(1) Using a suitable ring expander, remove upper
and intermediate piston rings (Fig. 71).
(2) Remove the upper oil ring side rail, lower oil
ring side rail and then oil ring expander from piston.(3) Clean ring grooves of any carbon deposits.
INSTALLATION
NOTE: The identification mark on face of upper and
intermediate piston rings must point toward top of
piston.
Install rings with manufacturers identification
mark facing up, to the top of the piston (Fig. 72).
CAUTION: Install piston rings in the following
order:
1. Oil ring expander.
2. Upper oil ring side rail.
3. Lower oil ring side rail.
Fig. 68 Connecting Rod Side Clearance - Typical
Fig. 69 Piston Ring Gap
1 - FEELER GAUGE
Fig. 70 Piston Ring Side Clearance
1 - FEELER GAUGE
RSENGINE 2.4L9-47
CONNECTING ROD BEARINGS (Continued)

LUBRICATION
DESCRIPTION
The lubrication system is a full-flow filtration,
pressure feed type. The oil pump is mounted in the
front engine cover and driven by the crankshaft.
OPERATION
Engine oil drawn up through the pickup tube and
is pressurized by the oil pump and routed through
the full-flow filter to the main oil gallery running the
length of the cylinder block. A diagonal hole in each
bulkhead feeds oil to each main bearing. Drilled pas-
sages within the crankshaft route oil from main bear-
ing journals to connecting rod journals. Balance shaft
lubrication is provided through an oil passage from
the number one main bearing cap through the bal-
ance shaft carrier support leg. This passage directly
supplies oil to the front bearings and internal
machined passages in the shafts that routes oil from
front to the rear shaft bearing journals. A vertical
hole at the number five bulkhead routes pressurized
oil through a restrictor (integral to the cylinder head
gasket) up past a cylinder head bolt to an oil gallery
running the length of the cylinder head. The cam-shaft journals are partially slotted to allow a prede-
termined amount of pressurized oil to pass into the
bearing cap cavities. Lubrication of the camshaft
lobes are provided by small holes in the camshaft
bearing caps that are directed towards each lobe. Oil
returning to the pan from pressurized components
supplies lubrication to the valve stems. Cylinder
bores and wrist pins are splash lubricated from
directed slots on the connecting rod thrust collars
(Fig. 86).
DIAGNOSIS AND TESTING - CHECKING
ENGINE OIL PRESSURE
(1) Disconnect and remove oil pressure switch.
(Refer to 9 - ENGINE/LUBRICATION/OIL PRES-
SURE SENSOR/SWITCH - REMOVAL)
(2) Install Special Tools C-3292 Gauge with 8406
Adaptor fitting.
(3) Start engine and record oil pressure. Refer to
Specifications for correct oil pressure requirements.
(Refer to 9 - ENGINE - SPECIFICATIONS)
CAUTION: If oil pressure is 0 at idle, do not perform
the 3000 RPM test
(4) If oil pressure is 0 at idle. Shut off engine,
check for pressure relief valve stuck open, a clogged
oil pick-up screen or a damaged oil pick-up tube
O-ring.
(5) After test is complete, remove test gauge and
fitting.
Fig. 85 Right Mount to Rail and Engine
1 - BOLT - MOUNT TO RAIL 68 N´m (50 ft. lbs.)
2 - BOLT - MOUNT TO ENGINE 54 N´m (40 ft. lbs.)
3 - BOLT - MOUNT TO RAIL (HORIZONTAL) 68 N´m (50 ft. lbs.)
4 - RIGHT ENGINE MOUNT
5 - RIGHT FRAME RAIL
Fig. 86 Engine Lubrication System
RSENGINE 2.4L9-53
RIGHT MOUNT (Continued)