Dodge Durango (DN). Manual — part 427

(12) Remove cylinder head cover retaining bolts.
(13) Remove cylinder head cover.

NOTE: The gasket may be used again, provided no
cuts, tears, or deformation has occurred.

INSTALLATION

CAUTION: Do not use harsh cleaners to clean the
cylinder head covers. Severe damage to covers
may occur.

Fig. 53 Exhaust Manifold—Left

ITEM

DESCRIPTION

TORQUE

ITEM

DESCRIPTION

TORQUE

1

Stud (Qty 2)

25 N·m (18 ft.
lbs.)

4

Nut (Qty 2)

8 N·m (72 in.
lbs.), then loosen
45 degrees

2

Bolt (Qty 4)

5

Nut (Qty 2)

3

Stud (Qty 2)

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4.7L ENGINE

9 - 39

REMOVAL AND INSTALLATION (Continued)

CAUTION: DO NOT allow other components includ-
ing the wire harness to rest on or against the
engine cylinder head cover. Prolonged contact with
other objects may wear a hole in the cylinder head
cover.

(1) Clean cylinder head cover and both sealing sur-

faces. Inspect and replace gasket as necessary.

(2) Install cylinder head cover and hand start all

fasteners. Verify that all double ended studs are in
the correct location shown in (Fig. 55).

(3) Tighten cylinder head cover bolts and double

ended studs to 12 N·m (105 in. lbs).

(4) Install right rear breather tube and filter

assembly.

(5) Connect injector, ignition coil electrical connec-

tors and harness retaining clips.

(6) Install the oil fill tube.
(7) Install PCV hose.
(8) Install heater hoses.
(9) Install air conditioning compressor retaining

bolts.

(10) Install accessory drive belt
(11) Fill Cooling system
(12) Install air cleaner assembly, resonator assem-

bly and air inlet hose.

(13) Connect battery negative cable.

ROCKER ARMS

REMOVAL

NOTE: Disconnect the battery negative cable to
prevent accidental starter engagement.

(1) Remove the cylinder head cover. Refer to Cyl-

inder Head Cover in this section.

(2) For rocker arm removal on cylinders 3 and 5

Rotate the crankshaft until cylinder #1 is at TDC
exhaust stroke.

(3) For rocker arm removal on cylinders 2 and 8

Rotate the crankshaft until cylinder #1 is at TDC
compression stroke.

(4) For rocker arm removal on cylinders 4 and 6

Rotate the crankshaft until cylinder #3 is at TDC
compression stroke.

(5) For rocker arm removal on cylinders 1 and 7

Rotate the crankshaft until cylinder #2 is at TDC
compression stroke.

(6) Using special tool 8516 press downward on the

valve spring, remove rocker arm (Fig. 56).

INSTALLATION

CAUTION: Make sure the rocker arms are installed
with the concave pocket over the lash adjusters.
Failure to do so may cause severe damage to the
rocker arms and/or lash adjusters.

NOTE: Coat the rocker arms with clean engine oil
prior to installation.

(1) For rocker arm installation on cylinders 3 and

5 Rotate the crankshaft until cylinder #1 is at TDC
exhaust stroke.

(2) For rocker arm installation on cylinders 2 and

8 Rotate the crankshaft until cylinder #1 is at TDC
compression stroke.

(3) For rocker arm installation on cylinders 4 and

6 Rotate the crankshaft until cylinder #3 is at TDC
compression stroke.

Fig. 54 Cylinder Head Cover—Left

ITEM

DESCRIPTION

TORQUE

1

Cover

Fasteners

12 N·m (105 in. lbs.)

Fig. 55 Cylinder Head Cover—Right

ITEM

DESCRIPTION

TORQUE

1

Cover Fasteners

12 N·m (105 in. lbs.)

9 - 40

4.7L ENGINE

DN

REMOVAL AND INSTALLATION (Continued)

(4) For rocker arm installation on cylinders 1 and

7 Rotate the crankshaft until cylinder #2 is at TDC
compression stroke.

(5) Using special tool 8516 press downward on the

valve spring, install rocker arm (Fig. 56).

(6) Install the cylinder head cover.

CYLINDER HEADS

CYLINDER HEAD—LEFT

REMOVAL

(1) Disconnect the negative cable from the battery.
(2) Raise the vehicle on a hoist.
(3) Disconnect the exhaust pipe at the left side

exhaust manifold.

(4) Drain the engine coolant. Refer to COOLING

SYSTEM.

(5) Lower the vehicle.
(6) Remove the intake manifold. Refer to proce-

dure in this section.

(7) Remove the cylinder head cover. Refer to proce-

dure in this section.

(8) Remove the fan shroud and fan blade assembly.

Refer to COOLING SYSTEM.

(9) Remove accessory drive belt. Refer to COOL-

ING SYSTEM.

(10) Remove the power steering pump and set

aside.

(11) Rotate the crankshaft until the damper timing

mark is aligned with TDC indicator mark (Fig. 57).

(12) Verify the V8 mark on the camshaft sprocket

is at the 12 o’clock position (Fig. 59). Rotate the
crankshaft one turn if necessary.

(13) Remove the crankshaft damper. Refer to

Crankshaft Damper in this section.

(14) Remove the timing chain cover. Refer to pro-

cedure in this section.

(15) Lock the secondary timing chains to the idler

sprocket using Special Tool 8515 (Fig. 58).

NOTE: Mark the secondary timing chain prior to
removal to aid in installation.

(16) Mark the secondary timing chain, one link on

each side of the V8 mark on the camshaft drive gear
(Fig. 59).

(17) Remove the left side secondary chain ten-

sioner. Refer to Timing Chain and Sprockets in this
section.

(18) Remove the cylinder head access plug (Fig.

60).

(19) Remove the left side secondary chain guide.

Refer to Timing Chain and Sprockets in this section.

(20) Remove the retaining bolt and the camshaft

drive gear.

Fig. 56 Rocker Arm—Removal

1 – CAMSHAFT
2 – SPECIAL TOOL 8516

Fig. 57 Engine Top Dead Center (TDC) Indicator

Mark

1 – TIMING CHAIN COVER
2 – CRANKSHAFT TIMING MARKS

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4.7L ENGINE

9 - 41

REMOVAL AND INSTALLATION (Continued)

CAUTION: Do not allow the engine to rotate. Severe
damage to the valve train can occur.

CAUTION: Do not overlook the four smaller bolts at
the front of the cylinder head. Do not attempt to
remove the cylinder head without removing these
four bolts.

NOTE: The cylinder head is attached to the cylinder
block with fourteen bolts.

Fig. 59 Camshaft Sprocket V8 Marks

1 – LEFT CYLINDER HEAD
2 – RIGHT CYLINDER HEAD

Fig. 60 Cylinder Head Access Plugs

1 – RIGHT CYLINDER HEAD ACCESS PLUG
2 – LEFT CYLINDER HEAD ACCESS PLUG

Fig. 58 Using Special Tool 8515 to Hold Chains to

Idler Sprocket.

1 – LOCK ARM
2 – RIGHT CAMSHAFT CHAIN
3 – SECONDARY CHAINS RETAINING PINS (4)
4 – IDLER SPROCKET
5 – LEFT CAMSHAFT CHAIN
6 – SPECIAL TOOL 8515

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4.7L ENGINE

DN

REMOVAL AND INSTALLATION (Continued)