Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1535
11. Install the rocker arm assembly (Refer to 9 -
ENGINE/CYLINDER
HEAD/ROCKER
ARM
/
ADJUSTER ASSY - INSTALLATION).
12. Install the cylinder head cover.
13. Install the front timing belt cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - INSTALLATION).
14. Install the vibration damper (4) (Refer to 9 -
ENGINE/ENGINE BLOCK/VIBRATION DAMPER -
INSTALLATION).
15. Fill cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
16. Connect the negative battery cable.
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ENGINE - 3.5L - SERVICE INFORMATION
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CAMSHAFT(S)
DESCRIPTION
A single overhead camshaft per cylinder head provides valve actuation. The left camshaft accommodates a cam
sensor pick-up wheel and is therefore longer. Each camshaft is supported by four bearing journals. A thrust plate
attached to the rear of each cylinder head controls camshaft end play. Right and left camshaft driving sprockets
support a timing mark, are keyed, and not interchangeable because of the cam sensor pick-up wheel on the left
sprocket. Camshaft bearing lubrication is provided via a oil supply passage through each rocker shaft pedestal
dowel.
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.
REMOVAL
NOTE: Camshafts are removed from the rear of
each cylinder head.
1. Remove the cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
CAUTION: Care must be taken not to nick or
scratch the journals when removing the camshaft.
2. Carefully remove the camshaft (3) from the rear of
the cylinder head.
INSPECTION
1. Inspect camshaft bearing journals (4) for damage
and binding. If journals are binding, check the cyl-
inder head for damage. Also check cylinder head
oil holes for clogging.
2. Check the cam lobe (5) and bearing surfaces for
abnormal wear and damage. Replace camshaft if
defective.
NOTE: If camshaft is replaced due to lobe wear or
damage, always replace the rocker arms.
3. Measure the lobe (5) actual wear and replace cam-
shaft if out of limit. Standard value is 0.0254 mm
(0.001 in.), wear limit is 0.254 mm (0.010 in.).
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ENGINE - 3.5L - SERVICE INFORMATION
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INSTALLATION
NOTE: Care must be taken not to scrape or nick
the camshaft journals when installing the cam-
shaft into position.
1. Lubricate camshaft (3) bearing journals, camshaft
lobes and camshaft seal (4) with clean engine oil
and install camshaft (3) into cylinder head.
2. Install the cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - INSTALLATION).
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ENGINE - 3.5L - SERVICE INFORMATION
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COVER CYLINDER HEAD - LEFT
REMOVAL
WARNING: DO NOT START OR RUN ENGINE WITH
CYLINDER HEAD COVER REMOVED FROM THE
ENGINE. DAMAGE OR PERSONAL INJURY MAY
OCCUR.
1. Disconnect and isolate the negative battery cable.
2. Remove the upper intake manifold from the engine
(Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANI-
FOLD - REMOVAL).
3. Cover lower intake manifold (4) with a suitable
cover during service.
4. Disconnect and remove the three ignition coils (2).
5. Remove the ground strap/resistor retaining bolt
from the cylinder head cover.
6. Lift up on the wire harness track (3) retaining tabs.
7. Completely loosen the cylinder head cover retain-
ing bolts and remove the cylinder head cover.
INSTALLATION
1. Clean cylinder head and cover mating surfaces.
Inspect and replace gasket (1) and seals (2) as
necessary.
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ENGINE - 3.5L - SERVICE INFORMATION
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