Chrysler Sebring, Stratus sedan, Sebring Convertible. Manual — part 481
FUEL SYSTEM/FUEL DELIVERY - STANDARD
PROCEDURE)
(2) Disconnect negative battery cable.
(3) Drain cooling system (Refer to 7 - COOLING/
ENGINE - STANDARD PROCEDURE).
(4) Remove throttle body air inlet hose and air
cleaner housing assembly.
(5) Remove intake manifold (Refer to 9 - ENGINE/
MANIFOLDS/INTAKE MANIFOLD - REMOVAL).
(6) Disconnect heater hose from thermostat hous-
ing.
(7) Remove heater tube support bracket from cyl-
inder head.
(8) Disconnect camshaft position sensor electrical
connector.
(9) Disconnect EGR solenoid electrical connector
(If equipped).
(10) Raise vehicle on hoist.
(11) Disconnect exhaust pipe from exhaust mani-
fold.
(12) Remove accessory drive belts (Refer to 7 -
COOLING/ACCESSORY
DRIVE/DRIVE
BELTS
-
REMOVAL).
(13) Remove crankshaft damper (Refer to 9 -
ENGINE/ENGINE BLOCK/VIBRATION DAMPER -
REMOVAL).
(14) Remove front timing belt cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL).
(15) Remove timing belt (Refer to 9 - ENGINE/
VALVE
TIMING/TIMING
BELT/CHAIN
AND
SPROCKETS - REMOVAL).
(16) Remove camshaft sprockets (Refer to 9 -
ENGINE/VALVE
TIMING/TIMING
BELT/CHAIN
AND SPROCKETS - REMOVAL).
(17) Remove timing belt idler pulley and rear tim-
ing belt cover.
(18) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER
HEAD/CYLINDER
HEAD
COVER(S) - REMOVAL).
(19) Remove camshafts and rocker arms (Refer to
9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) -
REMOVAL).
(20)
Remove cylinder head bolts and remove cyl-
inder head from engine block.
(21) Inspect and clean cylinder head (Refer to 9 -
ENGINE - STANDARD PROCEDURE).
CLEANING
To ensure engine gasket sealing, proper surface
preparation must be performed, especially with the
use of aluminum engine components and multi-layer
steel cylinder head gaskets.
NOTE: Multi-Layer Steel (MLS) head gaskets require
a scratch free sealing surface.
Remove all gasket material from cylinder head and
block. (Refer to 9 - ENGINE - STANDARD PROCE-
DURE) Be careful not to gouge or scratch the alumi-
num head sealing surface.
Clean all engine oil passages.
INSPECTION
(1)
Cylinder head must be flat within 0.1 mm
(0.004 in.) (Fig. 10).
(2)
Inspect camshaft bearing journals for scoring.
(3) Remove carbon and varnish deposits from
inside of valve guides with a reliable guide cleaner.
(4) Using a small hole gauge and a micrometer,
measure valve guides in 3 places top, middle and bot-
tom (Fig. 11). (Refer to 9 - ENGINE - SPECIFICA-
TIONS) Replace guides if they are not within
specification.
(5) Check valve guide height (Fig. 12).
Fig. 10 Checking Cylinder Head Flatness
1 - FEELER GAUGE
2 - STRAIGHT EDGE
Fig. 11 Checking Wear on Valve Guide—Typical
1 - TOP
2 - MIDDLE
3 - BOTTOM
4 - CUT AWAY VIEW OF VALVE GUIDE MEASUREMENT
LOCATIONS
JR
ENGINE 2.0L DOHC
9 - 27
CYLINDER HEAD (Continued)
INSTALLATION - CYLINDER HEAD
NOTE: The Cylinder head bolts should be examined
BEFORE reuse. If the threads are necked down, the
bolts must be replaced (Fig. 13).
Necking can be checked by holding a scale or
straight edge against the threads. If all the threads
do not contact the scale, the bolt should be replaced.
(1)
Before installing the bolts, the threads should
be coated with engine oil.
(2) Position new cylinder head gasket on block
with part number facing up (Fig. 14). Ensure gasket
is seated over the locating dowels in block.
(3) Install cylinder head on block.
(4) Tighten the cylinder head bolts in the sequence
shown in (Fig. 15). Using the 4 step torque turn
method, tighten according to the following values:
First:
All bolts to 34 N·m (25 ft. lbs.)
Second:
Bolts 1–6 to 68 N·m (50 ft. lbs.)
Bolts 7–10 to 49 N·m (35 ft. lbs.)
Third:
Bolts 1–6 to 68 N·m (50 ft. lbs.)
Bolts 7–10 to 49 N·m (35 ft. lbs.)
Tighten all bolts in the specified sequence an
additional 90° (1/4 Turn)
CAUTION: Do not use a torque wrench for the
Fourth step.
Fig. 12 Valve Guide Height
1 - VALVE GUIDE
2 - 13.25 - 13.75 MM
(0.521 - 0.541 IN.)
3 - SPRING SEAT
Fig. 13 Checking Bolts for Stretching (Necking)
1 - STRETCHED BOLT
2 - THREADS ARE NOT STRAIGHT ON LINE
3 - THREADS ARE STRAIGHT ON LINE
4 - UNSTRETCHED BOLT
Fig. 14 Cylinder Head Gasket Positioning
1 - PART NUMBER FACES UP
2 - NO. 1 CYLINDER
Fig. 15 Cylinder Head Tightening Sequence
9 - 28
ENGINE 2.0L DOHC
JR
CYLINDER HEAD (Continued)
(5) Install rocker arms and camshafts (Refer to 9 -
ENGINE/CYLINDER
HEAD/CAMSHAFT(S)
-
INSTALLATION).
(6) Install cylinder head cover (Refer to 9 -
ENGINE/CYLINDER
HEAD/CYLINDER
HEAD
COVER(S) - INSTALLATION).
(7) Install rear timing belt cover and timing belt
idler pulley (Refer to 9 - ENGINE/VALVE TIMING/
TIMING BELT / CHAIN COVER(S) - INSTALLA-
TION).
(8) Install
camshaft
sprockets
(Refer
to
9
-
ENGINE/VALVE
TIMING/TIMING
BELT/CHAIN
AND SPROCKETS - INSTALLATION).
(9)
Install timing belt (Refer to 9 - ENGINE/
VALVE
TIMING/TIMING
BELT/CHAIN
AND
SPROCKETS - INSTALLATION).
(10) Install front timing belt cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - INSTALLATION).
(11) Install
crankshaft
damper
(Refer
to
9
-
ENGINE/ENGINE BLOCK/VIBRATION DAMPER -
INSTALLATION).
(12) Install accessory drive belts (Refer to 7 -
COOLING/ACCESSORY
DRIVE/DRIVE
BELTS
-
INSTALLATION).
(13) Connect exhaust pipe to exhaust manifold.
Torque fasteners to 28 N·m (250 in. lbs.).
(14) Connect camshaft position sensor electrical
connector.
(15) Connect EGR solenoid electrical connector (If
equipped).
(16) Install heater tube support bracket to cylinder
head.
(17) Connect heater hose to thermostat housing.
(18) Install intake manifold (Refer to 9 - ENGINE/
MANIFOLDS/INTAKE MANIFOLD - INSTALLA-
TION).
(19) Install throttle body air inlet hose and air
cleaner housing assembly.
(20) Fill cooling system (Refer to 7 - COOLING/
ENGINE - STANDARD PROCEDURE).
(21) Connect negative battery cable.
CAMSHAFT OIL SEAL(S)
REMOVAL
(1) Remove timing belt. (Refer to 9 - ENGINE/
VALVE
TIMING/TIMING
BELT/CHAIN
AND
SPROCKETS - REMOVAL)
(2) Hold each camshaft sprocket with Special Tool
C-4687 and adaptor C-4687-1, while removing center
bolt (Fig. 16).
(3) Remove camshaft sprockets.
(4) Remove rear timing belt cover. (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL)
(5) Remove
camshaft
seal
using
Special
Tool
C-4679A (Fig. 17).
CAUTION: Do not nick shaft seal surface or seal
bore.
Fig. 16 Camshaft Sprocket - Removal/Installation
1 - ADAPTER C-4687–1
2 - SPECIAL TOOL C-4687
Fig. 17 Camshaft Oil Seal - Removal With C-4679A
1 - SPECIAL TOOL C-4679A
JR
ENGINE 2.0L DOHC
9 - 29
CYLINDER HEAD (Continued)
INSTALLATION
(1) Shaft seal surface must be free of varnish, dirt
or nicks. Polish with 400 grit paper if necessary.
(2) Install camshaft seals into cylinder head using
Special Tool MD-998306 until flush with head (Fig.
18).
(3) Install rear timing belt cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - INSTALLATION).
(4) Install camshaft sprockets. Hold each camshaft
sprocket with Special Tool C-4687 and adaptor
C-4687-1 and tighten center bolt to 115 N·m (85 ft.
lbs.) (Fig. 16).
(5) Install timing belt and front timing belt cover
(Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT/CHAIN AND SPROCKETS - INSTALLATION)
(Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT / CHAIN COVER(S) - INSTALLATION).
CAMSHAFT(S)
DESCRIPTION
Both nodular iron camshafts have six bearing jour-
nal surfaces and two cam lobes per cylinder (Fig. 19).
Flanges at the rear journals control camshaft end
play. Provision for a cam position sensor is located on
the intake camshaft on the rear of the cylinder head.
A hydrodynamic oil seal is used for oil control at the
front of the camshaft.
OPERATION
The camshaft is driven by the crankshaft via drive
sprockets and belt. The camshaft has precisely
machined lobes to provide accurate valve timing and
duration.
STANDARD PROCEDURE - CAMSHAFT
END-PLAY
(1) Oil camshaft journals and install camshaft
WITHOUT cam follower assemblies. Install rear cam
caps and tighten screws to specified torque.
(2) Using a suitable tool, move camshaft as far
rearward as it will go.
(3) Zero dial indicator (Fig. 20).
(4) Move camshaft as far forward as it will go.
(5) Record reading on dial indicator. For end play
specification, (Refer to 9 - ENGINE - SPECIFICA-
TIONS).
(6) If end play is excessive, check cylinder head
and camshaft for wear; replace as necessary.
REMOVAL
(1) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER
HEAD/CYLINDER
HEAD
COVER(S) - REMOVAL).
(2) Remove camshaft position sensor and camshaft
target magnet (Refer to 8 - ELECTRICAL/IGNITION
CONTROL/CAMSHAFT
POSITION
SENSOR
-
REMOVAL).
(3) Remove timing belt (Refer to 9 - ENGINE/
VALVE
TIMING/TIMING
BELT/CHAIN
AND
SPROCKETS - REMOVAL).
Fig. 18 Camshaft Seal - Installation
1 - SPECIAL TOOL MD 998306
Fig. 19 Cylinder Head and Camshafts
1 - CAMSHAFT BEARING CAPS
2 - PLUG
3 - CAMSHAFT
4 - CYLINDER HEAD
5 - CAMSHAFT OIL SEAL
9 - 30
ENGINE 2.0L DOHC
JR
CAMSHAFT OIL SEAL(S) (Continued)
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