Dodge Dakota Sport 2001 Service Manual page 1150

AN
TIMING BELT/CHAIN AND
SPROCKETS
REMOVAL
(1) Disconnect battery negative cable.
(2) Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(3) Remove timing chain cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL).
(4) Rotate crankshaft to align timing marks (Fig.
84) to #1 TDC.
(5) Remove camshaft sprocket attaching bolt and
remove timing chain with crankshaft and camshaft
sprockets.
(6) Slip crankshaft sprocket onto crankshaft and
compress tensioner shoe by placing a large screw-
driver between crankshaft sprocket and tensioner
shoe (Fig. 83). Compress shoe until hole in shoe lines
up with hole in bracket. Slide a suitable pin into the
holes (Fig. 83) and remove screwdriver.
(7) If tensioner assembly is to be replaced, remove
the three tensioner to block bolts and remove ten-
sioner assembly.
Fig. 83 Compressing Tensioner For Chain
Installation
1 - SCREWDRIVER
2 - INSERT PIN HERE
Fig. 84 Alignment of Timing Marks
1 - TIMING MARKS
INSPECTION—MEASURING TIMING CHAIN
STRETCH
NOTE: Timing chain tensioner must be removed for
this operation.
(1) Place a scale next to the timing chain so that
any movement of the chain can be measured.
(2) Place a torque wrench and socket over cam-
shaft sprocket attaching bolt. Apply torque in the
direction of crankshaft rotation to take up slack; 41
N·m (30 ft. lbs.) torque with cylinder head installed
or 20 N·m (15 ft. lbs.) torque with cylinder head
removed. With torque applied to the camshaft
sprocket bolt, crankshaft should not be permitted to
move. It may be necessary to block the crankshaft to
prevent rotation.
(3) Hold a scale with dimensional reading even
with the edge of a chain link. With cylinder heads
installed, apply 14 N·m (30 ft. lbs.) torque in the
reverse direction. With the cylinder heads removed,
apply 20 N·m (15 ft. lbs.) torque in the reverse direc-
tion. Note the amount of chain movement (Fig. 85) .
(4) Install a new timing chain, if its movement
exceeds 3.175 mm (1/8 inch).
ENGINE 3.9L 9 - 121