Dodge Durango (DN). Manual — part 433

(12) Place blocks of wood between engine brackets

and lower mounts to provide stability to engine.

NOTE: Do not pry on oil pan or oil pan gasket.
Gasket is mounted to engine and does not come
out with oil pan.

(13) Remove the oil pan mounting bolts and oil

pan (Fig. 108).

(14) Unbolt oil pump pickup tube and remove tube

and oil pan gasket from engine.

INSTALLATION

(1) Clean the oil pan gasket mating surface of the

bedplate and oil pan.

(2) Position the oil pan gasket and pickup tube

with new o-ring. Install the mounting bolt and nuts.
Tighten bolt and nuts to 28 N·m (20 ft. lbs.).

(3) Position the oil pan and install the mounting

bolts. Tighten the mounting bolts to 15 N·m (11 ft.
lbs.) in the sequence shown (Fig. 108).

(4) Raise the engine and remove the blocks of

wood.

Fig. 104 Main Bearing Markings on Target Wheel

1 – REARMOST CRANKSHAFT COUNTER WEIGHT
2 – TARGET WHEEL
3 – MAIN BEARING SELECT FIT MARKINGS

MAIN BEARING SELECTION CHART—4.7L

GRADE

SIZE mm

(in.)

FOR USE WITH

MARKING

JOURNAL SIZE

A

0.008 mm

U/S

63.488–63.496 mm

(0.0004 in.)

U/S

(2.4996–2.4999 in.)

B

NOMINAL

63.496–63.504 mm

(2.4999–2.5002 in.)

C

0.008 mm

O/S

63.504–63.512 mm

(0.0004 in.)

O/S

(2.5002–2.5005 in.)

Fig. 105 Checking Crankshaft End Play—Typical

CRANKSHAFT END PLAY SPECIFICATION

CHART

New Part:

0.052 - 0.282mm

Specification

(0.002 - 0.011 in.)

Wear Limit:

0.43mm

(0.017 in.)

Fig. 106 Structural Dust Cover Removal /

Installation

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4.7L ENGINE

9 - 63

REMOVAL AND INSTALLATION (Continued)

(5) Lower engine and install both the left and

right side engine mount through bolts (Fig. 107).
Tighten the nuts to 68 N·m (50 ft. lbs.).

(6) Remove jack and install oil filter.
(7) Install structural dust cover.
(8) Install exhaust pipe onto exhaust manifolds.
(9) Lower vehicle.
(10) Install intake manifold.
(11) Install throttle body resonator and air inlet

hose.

(12) Install upper fan shroud.
(13) Fill cooling system.
(14) Fill engine oil.

(15) Start engine and check for leaks.

OIL PAN 4X4 VEHICLE

REMOVAL

NOTE: 4X4 vehicles equipped with a 4.7L engine
must have the front axle removed before the oil pan
can be removed.

(1) Remove the front axle from vehicle. Refer to

DIFFERENTIAL AND DRIVELINE.

(2) Remove the structural dust cover (Fig. 109).

Refer to procedure in this section.

(3) Drain the engine oil and remove oil filter.

NOTE: Do not pry on oil pan or oil pan gasket.
Gasket is mounted to engine and does not come
out with oil pan.

(4) Remove the oil pan mounting bolts and oil pan

(Fig. 110).

(5) Unbolt oil pump pickup tube and remove tube

and oil pan gasket from engine.

Fig. 107 Engine Mount Through Bolt and Nut

Removal / Installation

1 – LOCKNUT AND WASHER
2 – ENGINE MOUNT/INSULATOR
3 – THROUGH BOLT
4 – FRAME

Fig. 108 Oil Pan Mounting Bolts and Oil Pan

Fig. 109 Structural Dust Cover Removal /

Installation

Fig. 110 Oil Pan Mounting Bolts and Oil Pan

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4.7L ENGINE

DN

REMOVAL AND INSTALLATION (Continued)

INSTALLATION

(1) Clean the oil pan gasket mating surface of the

bedplate and oil pan.

(2) Position the oil pan gasket and pickup tube

with new o-ring. Install the mounting bolt and nuts.
Tighten bolt and nuts to 28 N·m (20 ft. lbs.).

(3) Position the oil pan and install the mounting

bolts. Tighten the mounting bolts to 15 N·m (11 ft.
lbs.) in the sequence shown (Fig. 110).

(4) Install structural dust cover.
(5) Install oil filter.
(6) Install front axle. Refer to DIFFERENTIAL

AND DRIVELINE.

(7) Lower vehicle.
(8) Fill engine oil.
(9) Start engine check for leaks.

PISTON AND CONNECTING ROD

REMOVAL

(1) Disconnect negative cable from battery.
(2) Remove the following components: (Refer to

procedures in this section)

• Oil pan and gasket/windage tray.

• Cylinder head covers.

• Timing chain cover.

• Cylinder head(s).
(3) If necessary, remove top ridge of cylinder bores

with a reliable ridge reamer before removing pistons
from cylinder block. Be sure to keep tops of pis-
tons covered during this operation. Pistons and
connecting rods must be removed from top of cylinder
block. When removing piston and connecting rod
assemblies from the engine, rotate crankshaft so the
each connecting rod is centered in cylinder bore.

CAUTION: DO NOT use a number stamp or a punch
to mark connecting rods or caps, as damage to
connecting rods could occur

NOTE: Connecting rods and bearing caps are not
interchangeable

and

should

be

marked

before

removing to ensure correct reassembly.

(4) Mark connecting rod and bearing cap positions

using a permanent ink marker or scribe tool (Fig.
111).

CAUTION: Care must be taken not to damage the
fractured rod and cap joint face surfaces, as engine
damage may occur.

(5) Remove connecting rod cap. Install Special Tool

8507 Connecting Rod Guides into the connecting rod
being removed. Remove piston from cylinder bore.
Repeat this procedure for each piston being removed.

CAUTION: Care must be taken not to nick crank-
shaft journals, as engine damage may occur

(6) Immediately after piston and connecting rod

removal, install bearing cap on the mating connect-
ing rod to prevent damage to the fractured cap and
rod surfaces.

(7) Carefully remove piston rings from piston(s),

starting from the top ring down.

PISTON RINGS—INSTALLATION

(1) The No. 1 and No. 2 piston rings have a differ-

ent cross section. Ensure No. 2 ring is installed with
manufacturers I.D. mark (Dot) facing up, towards top
of the piston.

NOTE: Piston rings are installed in the following
order:

•

Oil ring expander.

•

Upper oil ring side rail.

•

Lower oil ring side rail.

•

No. 2 Intermediate piston ring.

•

No. 1 Upper piston ring.

(2) Install the oil ring expander.
(3) Install upper side rail (Fig. 112) by placing one

end between the piston ring groove and the expander
ring. Hold end firmly and press down the portion to
be installed until side rail is in position. Repeat this
step for the lower side rail.

(4) Install No. 2 intermediate piston ring using a

piston ring installer (Fig. 113).

(5) Install No. 1 upper piston ring using a piston

ring installer (Fig. 113).

(6) Position piston ring end gaps as shown in (Fig.

114). It is important that expander ring gap is at
least 45° from the side rail gaps, but not on the pis-
ton pin center or on the thrust direction.

INSTALLATION

(1) Before installing piston and connecting rod

assemblies in to the bore, ensure all rings are in
position shown in (Fig. 114).

Fig. 111 Identify Connecting Rod to Cylinder

Position—Typical

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4.7L ENGINE

9 - 65

REMOVAL AND INSTALLATION (Continued)

(2) Immerse the piston head and rings in clean

engine oil. Position a ring compressor over the piston
and rings. Tighten ring compressor. Ensure posi-
tion of rings do not change during this opera-
tion.

(3) Position bearing onto connecting rod. Ensure

that hole in bearing shell aligns with hole in connect-
ing rod. Lubricate bearing surface with clean engine
oil.

(4) Install

Special

Tool

8507

Connecting

Rod

Guides into connecting rod bolt threads (Fig. 115).

(5) The pistons are marked on the piston pin bore

surface with an raised “F” indicating installation
position. This mark must be pointing toward the
front of engine on both cylinder banks. The connect-
ing rod oil slinger slot faces the front of the engine
(Fig. 116).

(6) Wipe cylinder bore clean and lubricate with

engine oil.

Fig. 112 Side Rail—Installation

1 – SIDE RAIL END

Fig. 113 Upper and Intermediate Rings—Installation

Fig. 114 Piston Ring End Gap Position

1 – SIDE RAIL UPPER
2 – NO. 1 RING GAP
3 – PISTON PIN
4 – SIDE RAIL LOWER
5 – NO. 2 RING GAP AND SPACER EXPANDER GAP

Fig. 115 Piston and Connecting Rod—Installation

1 – “F” TOWARD FRONT OF ENGINE
2 – OIL SLINGER SLOT
3 – RING COMPRESSOR
4 – SPECIAL TOOL 8507

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4.7L ENGINE

DN

REMOVAL AND INSTALLATION (Continued)