Dodge Dakota Sport 2001 Service Manual page 1089

9 - 60 ENGINE 2.5L
VALVE TIMING
STANDARD PROCEDURE - CHECKING TIMING
CHAIN WEAR
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. 79) .
Fig. 79 Measuring Timing Chain Wear and Stretch
1 - TORQUE WRENCH
2 - 3.175 MM (0.125 IN.)
(4) Install a new timing chain, if its movement
exceeds 3.175 mm (1/8 inch).
TIMING BELT / CHAIN
COVER(S)
REMOVAL
(1) Disconnect battery negative cable.
(2) Remove accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
(3) Remove the accessory drive brackets that are
attached to the timing case cover.
(4) Remove the fan and hub assembly and remove
the fan shroud.
(5) Remove the A/C compressor (if equipped) (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMB-
ING/A/C COMPRESSOR - REMOVAL) and generator
bracket assembly from the engine cylinder head and
move to one side.
(6) Remove the vibration damper (Refer to 9 -
ENGINE/ENGINE BLOCK/VIBRATION DAMPER -
REMOVAL) (Fig. 80).
(7) Remove the oil pan-to-timing case cover bolts
and timing case cover-to-cylinder block bolts.
(8) Remove the timing case cover and gasket from
the engine.
(9) Pry the crankshaft oil seal from the front of the
timing case cover (Fig. 80).
Fig. 80 Timing Case Cover Components
1 - TIMING CASE COVER
2 - OIL SLINGER
3 - CRANKSHAFT OIL SEAL
4 - VIBRATION DAMPER PULLEY
INSTALLATION
(1) Clean the timing case cover, oil pan and cylin-
der block gasket surfaces.
(2) Install a new crankshaft oil seal in the timing
case cover (Refer to 9 - ENGINE/ENGINE BLOCK/
CRANKSHAFT OIL SEAL - FRONT - INSTALLA-
TION). The open end of the seal should be toward
the inside of the cover. Support the cover at the seal
area while installing the seal. Force it into position
with Seal Installation Tool 6139.
(3) Position the gasket on the cylinder block.
(4) Position the timing case cover on the oil pan
gasket and the cylinder block.
(5) Insert Timing Case Cover Alignment and Seal
Installation Tool 6139 in the crankshaft opening in
the cover (Fig. 81).
(6) Install the timing case cover-to-cylinder block
and the oil pan-to-timing case cover bolts.
AN