Chrysler RAM TRUCK 2500 1994 Service Manual page 748

(6) Remove vibration damper bolt and washer from
end of crankshaft.
(7) Install bar and screw from Puller Tool Set
C-3688. Install 2 bolts with washers through the
puller tool and into the vibration damper (Fig. 1).
Fig. 1 Vibration Damper Assembly
(8) Pull vibration damper off of the crankshaft.
INSTALLATION
(1) Position the vibration damper onto the crank­
shaft.
(2) Place installing tool, part of Puller Tool Set
C-3688 in position and press the vibration damper
onto the crankshaft (Fig. 2).
Fig. 2 Installing Vibration Damper
(3) Install the crankshaft bolt and washer. Tighten
the bolt to 183 N-m (135 ft. lbs.) torque.
(4) Install the crankshaft pulley. Tighten the pul­
ley bolts to 23 N-m (200 in. lbs.) torque.
(5) Install the serpentine belt (refer to Group 7,
Cooling System).
(6) Install the cooling system fan. Tighten the bolts
to 23 N-m (17 ft. lbs.) torque.
(7) Position the fan shroud and install the bolts.
Tighten the retainer bolts to 11 N-m (95 in. lbs.)
torque.
(8) Connect the negative cable to the battery.
TIMING CHAIN COVER
REMOVAL
(1) Disconnect the negative cable from the battery.
(2) Drain cooling system (refer to Group 7, Cooling
System).
(3) Remove the serpentine belt (refer to Group 7,
Cooling System).
(4) Remove water pump (refer to Group 7, Cooling
System).
(5) Remove power steering pump (refer to Group
19, Steering).
(6) Remove vibration damper.
(7) Remove fuel lines (refer to Group 14, Fuel Sys­
tem).
(8) Loosen oil pan bolts and remove the front bolt
at each side.
(9) Remove the cover bolts.
(10) Remove chain case cover and gasket using ex­
treme caution to avoid damaging oil pan gasket.
(11) Place a suitable tool behind the lips of the oil
seal to pry the oil seal outward. Be careful not to
damage the crankshaft seal surface of cover (Fig. 3).
Fig. 3 Removal of Front Crankshaft Oil Seal
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 i n 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. I t 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 (30 ft. lbs.) torque in the re­
verse direction. With the cylinder heads removed,
apply 20 N-m (15 ft. lbs.) torque i n the reverse direc­
tion. Note the amount of chain movement (Fig. 4).
(4) Install a new timing chain, i f its movement ex­
ceeds 3.175 mm (1/8 inch).
(5) I f chain is not satisfactory, remove camshaft
sprocket attaching bolt and remove timing chain with
crankshaft and camshaft sprockets.