Dodge RAM TRUCK 1500 1995 Service Manual page 968

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8 J L ENGINE
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(8) Loosen oil pan bolts and remove the front oil
pan bolts that mount the pan to the timing chain
coven
(9) Eemove the cover bolts.
(10) Remove timing chain cover and gasket using
extreme caution to avoid damaging oil pan gasket.
(11) Inspect surface of cover. Remove any burrs or
high spots.
TIMING CHAIN STRETCH
(1) Place a scale next to the timing chain so that
any movement of the chain may be measured.
(2) Place a torque wrench and socket over cam­
shaft sprocket attaching bolt. Apply torque in the di­
rection 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 re­
moved. ' With a 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 in­
stalled, apply 14 N-m (80 ft. lbs.) torque in the re­
verse 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. 5).
J9409-96
Fig. 5 Measuring Timing Chain Wear and Stretch
(4) Install a new timing chain, if its movement ex­
ceeds 3.175 mm (1/8 inch).
(5) If chain is not satisfactory, aline camshaft and
crankshaft centerline. Remove camshaft sprocket at­
taching bolt and remove timing chain and camshaft
sprockets.
(6) Use puller 6444 and jaws 6820 to remove
crankshaft sprocket (Fig. 6).
(6) Line up key in crankshaft with keyway in
sprocket, press on crankshaft timing sprocket, use
tools C-3688, C-3718 and MB-990799, seat sprocket
against crankshaft shoulder (Fig.7).
(7) Turn crankshaft to line up the timing mark
with the crankshaft and camshaft centerline.
(8) Put chain on camshaft sprocket.
(9) Take chain and camshaft sprocket, align timing
marks and install chain and cam sprocket onto
SPECIAL
TOOL
MD990799
/
SPECIAL
TOOL
G 3 7 1 8
J9409-140
Fig. 7 Crankshaft Sprocket Installation
crankshaft sprocket. Check to see that timing marks
are on the centerline of the crankshaft and camshaft
centerline (Fig. 8).
(11) Install the camshaft bolt. Tighten the bolt to
61 N-m (45 ft. lbs.) torque.
(12) Check camshaft end play. The end play should
be 0.051-0.152 mm (0.002-0.006 inch) with a new
thrust plate and up to 0.254 mm (0.010 inch) with a
used thrust plate. If not within these limits install a
new thrust plate.