Page 1540 of 5267

2. Position the new cylinder head gasket on the locat-
ing dowels.
CAUTION: When installing cylinder head, use care
not damage the tensioner arm or the guide arm.
3. Position the cylinder head onto the cylinder block.
Make sure the cylinder head seats fully over the
locating dowels.
NOTE: The four M8 cylinder head mounting bolts
(1) require sealant to be added to them before
installing. Failure to do so may cause leaks.
4. Lubricate the cylinder head bolt threads with clean
engine oil and install the eight M10 bolts.
5. Coat the four M8 cylinder head bolts withMopar
Lock and Seal Adhesivethen install the bolts.
NOTE: The cylinder head bolts are tightened using
an angle torque procedure, however, the bolts are
not a torque-to-yield design.
6. Tighten the bolts in sequence using the following steps and torque values:
Step 1: Tighten bolts 1-8, 27 Nꞏm (20 ft. lbs.).
Step 2: Verify that bolts 1-8, all reached 27 Nꞏm (20 ft. lbs.), by repeatingstep 1 without loosening the bolts.
Tightenbolts9thru12to14Nꞏm(10ft.lbs.).
Step 3: Tighten bolts 1-8, 90 °.
Step 4: Tighten bolts 1-8, 90 °, again. Tighten bolts 9-12, 26 Nꞏm (19 ft. lbs.)
Page 1541 of 5267

CAUTION: The nut on the right side camshaft sprocket should not be removed for any reason, as the
sprocket and camshaft sensor target wheel is serviced as an assembly. If the nut was removed, torque nut
to 5 NM ( 60 in. lbs.).
7. Position the secondary chain (2) onto the camshaft drive gear, making sure one marked chain link is on either
side of the V6 mark (1) on the gear then using Special Tool 8428 Camshaft Wrench, position the gear onto the
camshaft.
CAUTION: Remove excess oil from camshaft sprocket retaining bolt before reinstalling bolt. Failure to do so
may cause over-torquing of bolt resulting in bolt failure.
8. Install the camshaft drive gear retaining bolt.
9. Install the right side secondary chain guide (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT/CHAIN AND
SPROCKETS - INSTALLATION).
10. Install the cylinder head access plug (1,2).
11. Re-set and install the right side secondary chain
tensioner (Refer to 9 - ENGINE/VALVE TIMING/
TIMING BELT/CHAIN AND SPROCKETS -
INSTALLATION).
Page 1542 of 5267

12. Remove Special Tool 8429 (1).
13. Install the timing chain cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL).
14. Install the crankshaft damper (Refer to 9 -
ENGINE/ENGINE BLOCK/VIBRATION DAMPER -
INSTALLATION). Tighten damper bolt 175 Nꞏm
(130 Ft. Lbs.).
15. Install accessory drive belt (Refer to 7 - COOL-
ING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).
16. Install the fan shroud (Refer to 7 - COOLING/EN-
GINE/RADIATOR FAN - INSTALLATION).
17. Install the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
18. Install the intake manifold (Refer to 9 - ENGINE/
MANIFOLDS/INTAKE MANIFOLD - INSTALLA-
TION).
19. Install oil fill housing onto cylinder head.
20. Refill the cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
21. Raise the vehicle.
22. Install the exhaust pipe onto the right exhaust manifold.
23. Lower the vehicle.
24. Reconnect battery negative cable.
25. Start the engine and check for leaks.
Page 1543 of 5267

CAMSHAFT
DESCRIPTION
The camshafts consist of powdered metal steel lobes which are sinter-bonded to a steel tube. Four bearing journals
are machined into the camshaft. Camshaft end play is controlled by two thrust walls that border the nose piece
journal.
REMOVAL
CAUTION: When the timing chain is removed and the cylinder heads are still installed, DO NOT forcefully
rotate the camshafts or crankshaft independently of each other. Severe valve and/or piston damage can
occur.
CAUTION: When removing the cam sprocket, timing chains or camshaft, Failure to use special tool 8379 will
result in hydraulic tensioner ratchet over extension, Requiring timing chain cover removal to re-set the ten-
sioner ratchet.
1. Remove the cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) -
REMOVAL).
2. Set engine to TDC cylinder No. 1, camshaft sprocket V6 marks at the 12 o’clock position (1).
3. Mark one link on the secondary timing chain on both sides of the V6 mark on the camshaft sprocket to aid in
installation.
Page 1546 of 5267

INSTALLATION
1. Lubricate camshaft journals with clean engine oil.
NOTE: Position the right side camshaft so that the
camshaft sprocket dowel is near the 10 o’clock
position, This will place the camshaft at the neu-
tral position easing the installation of the camshaft
bearing caps.
2. Position the camshaft into the cylinder head.
3. Install the camshaft bearing caps, hand tighten the
retaining bolts.
NOTE: Caps should be installed so that the
stamped numbers on the caps are in numerical
order, ( 1 thru 4 ) from the front to the rear of the
engine. All caps should be installed so that the
stamped arrows on the caps point toward the front
of the engine.
4. Working in 1/2 turn increments, tighten the bearing
cap retaining bolts starting with the middle cap
working outward.
5. Torque the camshaft bearing cap retaining bolts to
11 N ꞏm ( 1 0 0 i n . l b s . ) .
6. Position the camshaft drive gear into the timing chain aligning the V6 mark between the two marked chain links
(Two links marked during removal) .
Page 1547 of 5267
7. Using Special Tool 8428 Camshaft Wrench (2),
rotate the camshaft until the camshaft sprocket
dowel is aligned with the slot in the camshaft
sprocket. Install the sprocket onto the camshaft.
CAUTION: Remove excess oil from camshaft
sprocket bolt. Failure to do so can cause bolt
over-torque resulting in bolt failure.
8. Remove excess oil from camshaft sprocket bolt,
then install the camshaft sprocket retaining bolt and
hand tighten.
9. Remove timing chain wedge special tool 8379 (1).
10. Using Special Tool 6958 spanner wrench with
adapter pins 8346, torque the camshaft sprocket
retaining bolt to 122 Nꞏm (90 ft. lbs.).
11. Install the camshaft position sensor.
12. Install the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
Page 1549 of 5267

ROCKER ARM - VALVE
DESCRIPTION
The rocker arms are steel stampings with an integral roller bearing. The rocker arms incorporate a 0.5 mm oil hole
in the lash adjuster socket for roller and camshaft lubrication.
REMOVAL
NOTE: Disconnect the battery negative cable to
prevent accidental starter engagement.
1. Remove the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
2. For rocker arm removal on cylinder No. 4, Rotate
the crankshaft until cylinder No. 1 is at BDC intake
stroke.
3. For rocker arm removal on cylinder No. 1, Rotate
the crankshaft until cylinder No. 1 is at BDC com-
bustion stroke.
4. For rocker arm removal on cylinders No. 3 and No.
5, Rotate the crankshaft until cylinder No. 1 is at
TDC exhaust stroke.
5. For rocker arm removal on cylinders No. 2 and No.
6, Rotate the crankshaft until cylinder No. 1 is at
TDC ignition stroke.
6. Using special tool 8516 Rocker Arm Remover (2) ,
press downward on the valve spring, remove
rocker arm.
Page 1551 of 5267

SPRINGS - VALVE
DESCRIPTION
The valve springs are made from high strength chrome silicon steel. There are different springs for intake and
exhaust applications. The exhaust spring has an external damper. The valve spring seat is integral with the valve
stem seal, which is a positive type seal to control lubrication.
REMOVAL
1. Remove the cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) -
REMOVAL).
2. Using Special Tool 8516 Valve Spring Compressor, remove the rocker armsand the hydraulic lash adjusters.
3. Remove the spark plug for the cylinder the valve spring and seal are to be removed from.
4. Apply shop air to the cylinder to hold the valves in place when the spring is removed.
NOTE: All six valve springs and seals are removed in the same manner; this procedure only covers one
valve seal and valve spring.
5. Using Special Tool 8387 Valve Spring Compressor, compress the valve spring.
NOTE: It may be necessary to tap the top of the valve spring to loosen the spring retainers locks enough to
be removed.
6. Remove the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
7. Remove the valve spring compressor.
NOTE: The valve springs are NOT common between intake and exhaust.
8. Remove the spring retainer, and the spring.
9. Remove the valve stem seal.
NOTE: The valve stem seals are common between intake and exhaust.
INSTALLATION
NOTE: All six valve springs and seals are removed in the same manner; this procedure only covers one
valve seal and valve spring.
1. Apply shop air to the cylinder to holdthevalvesinplacewhilethespringis installed.
NOTE: The valve stem seals are common between intake and exhaust.
2. Install the valve stem seal.
NOTE: The valve springs are NOT common between intake and exhaust.
3. Install the spring retainer, and the spring.
4. Using Special Tool 8387 Valve Spring Compressor, compress the valve spring.
5. Install the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
6. Remove the valve spring compressor.
7. Disconnect the shop air to the cylinder.
8. Install the spark plug for the cylinder the valve spring and seal was installed on.