Dodge Dakota (R1). Manual — part 491

NOTE: When gripping the camshaft, place the pliers
on the tube portion of the camshaft only. Do not
grip the lobes or the sprocket areas.

(7) Using the adjustable pliers, rotate the cam-

shaft until the camshaft sprocket dowel is aligned
with the slot in the camshaft sprocket. Install the
sprocket onto the camshaft (Fig. 32).

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 bolt, then install the

camshaft sprocket retaining bolt and hand tighten.

(9) Remove Special Tool 8350 timing chain wedge

(Fig. 33).

(10) Using Special Tool 6958 spanner wrench with

adapter pins 8346 (Fig. 34), torque the camshaft
sprocket retaining bolt to 122 N·m (90 ft. lbs.).

(11) Install the cylinder head cover.

Fig. 30 Camshaft Bearing Caps Tightening

Sequence

Fig. 31 Timing Chain to Sprocket Alignment

1 - LEFT CYLINDER HEAD

2 - RIGHT CYLINDER HEAD

9 - 152

ENGINE 4.7L

AN

CAMSHAFT(S) - LEFT (Continued)

Fig. 32 Camshaft Sprocket Installation

1 - ADJUSTABLE PLIERS
2 - CAMSHAFT DOWEL

Fig. 33 SPECIAL TOOL 8350

1 - LEFT CYLINDER HEAD
2 - RIGHT CYLINDER HEAD

3 - SPECIAL TOOL 8350 WEDGE
4 - SPECIAL TOOL 8350 WEDGE

AN

ENGINE 4.7L

9 - 153

CAMSHAFT(S) - LEFT (Continued)

CAMSHAFT(S) - RIGHT

DESCRIPTION

The camshafts consist of powdered metal steel

lobes which are sinter-bonded to a steel tube. A steel
post or nose piece is friction-welded to the steel cam-
shaft tube. Five bearing journals are machined into
the camshaft, four on the steel tube and one on the
steel nose piece. Camshaft end play is controlled by
two thrust walls that border the nose piece journal.
Engine oil enters the hollow camshafts at the third
journal and lubricates every intake lobe rocker
through a drilled passage in the intake lobe.

REMOVAL

CAUTION: When the timing chain is removed and
the cylinder heads are still installed, DO NOT force-
fully rotate the camshafts or crankshaft indepen-

dently 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 8350
will result in hydraulic tensioner ratchet over exten-
sion, Requiring timing chain cover removal to re-set
the tensioner ratchet.

(1) Remove the cylinder head covers (Refer to 9 -

ENGINE/CYLINDER

HEAD/CYLINDER

HEAD

COVER(S) - REMOVAL).

(2) Set engine to TDC cylinder #1, camshaft

sprocket V8 marks at the 12 o’clock position.

(3) Mark one link on the secondary timing chain

on both sides of the V8 mark on the camshaft
sprocket to aid in installation.

CAUTION: Do not hold or pry on the camshaft tar-
get wheel for any reason, Severe damage will occur
to the target wheel. A damaged target wheel could
cause a vehicle no start condition.

(4) Loosen but DO NOT remove the camshaft

sprocket retaining bolt. Leave bolt snug against
sprocket.

NOTE:

The

timing

chain

tensioners

must

be

secured prior to removing the camshaft sprockets.
Failure to secure tensioners will allow the tension-
ers to extend, requiring timing chain cover removal
in order to reset tensioners.

CAUTION: Do not force wedge past the narrowest
point between the chain strands. Damage to the
tensioners may occur.

(5) Position Special Tool 8350 timing chain wedge

between the timing chain strands. Tap the tool to
securely wedge the timing chain against the ten-
sioner arm and guide (Fig. 35).

(6) Remove the camshaft position sensor (Fig. 36).

NOTE: When gripping the camshaft, place the pliers
on the tube portion of the camshaft only. Do not
grip the lobes or the sprocket areas.

(7) Hold the camshaft with adjustable pliers while

removing the camshaft sprocket bolt and sprocket
(Fig. 37).

(8) Using the pliers, gently allow the camshaft to

rotate 45° counter-clockwise until the camshaft is in
the neutral position (no valve load).

(9) Starting at the outside working inward, loosen

the camshaft bearing cap retaining bolts 1/2 turn at
a time. Repeat until all load is off the bearing caps.

Fig. 34 Tightening Left Side Cam Sprocket

Retaining Bolt

1 - TORQUE WRENCH
2 - CAMSHAFT SPROCKET
3 - LEFT CYLINDER HEAD
4 - SPECIAL TOOL 6958 SPANNER WITH ADAPTER PINS 8346

9 - 154

ENGINE 4.7L

AN

CAMSHAFT(S) - LEFT (Continued)

Fig. 35 Securing Timing Chain Tensioners Using Timing Chain Wedge

1 - LEFT CYLINDER HEAD
2 - RIGHT CYLINDER HEAD

3 - SPECIAL TOOL 8350 WEDGE
4 - SPECIAL TOOL 8350 WEDGE

Fig. 36 Camshaft Position Sensor

1 - CRANKSHAFT POSITION SENSOR
2 - CYLINDER HEAD COVER
3 - CAMSHAFT POSITION SENSOR
4 - RIGHT SIDE CYLINDER BLOCK

Fig. 37 Camshaft Sprocket and Chain

1 - ADJUSTABLE PLIERS
2 - SPROCKET BOLT
3 - CAMSHAFT SPROCKET AND CHAIN
4 - CAMSHAFT

AN

ENGINE 4.7L

9 - 155

CAMSHAFT(S) - RIGHT (Continued)