Chrysler RAM TRUCK 2500 1994 Service Manual page 805

fully drive bearing shell into place.
(3) Install remaining bearings i n the same manner.
Bearings must be carefully aligned to bring oil holes
into full register with oil passages from the main
bearing. I f the camshaft bearing shell oil holes are
not i n exact alignment, remove and install them cor­
rectly. Install a new core hole plug at the rear of
camshaft. Be sure this p l u g does not leak.
INSTALLATION
(1) Lubricate camshaft lobes and camshaft bearing
journals and insert the camshaft to within 51 mm (2
inches) of its final position i n cylinder block.
Whenever a n engine has been rebuilt, a new
camshaft and/or new tappets installed, add 1
pint of Mopar Crankcase Conditioner, or equiv­
alent. The oil mixture should be left i n engine
for a m i n i m u m of 805 k m (500 miles). Drain at
the next n o r m a l o i l change.
(2) Install Camshaft Gear Installer Tool C-3509
with tongue back of distributor drive gear (Fig. 12).
Fig. 12 Camshaft Holding Tool C-3509 (Installed
Position)
(3) Hold tool i n position with a distributor lock-
plate bolt. This tool will restrict camshaft from being
pushed i n too far and prevent knocking out the welch
plug i n rear of cylinder block. Tool should remain
i n s t a l l e d u n t i l the camshaft and crankshaft
sprockets a n d timing c h a i n have been installed.
(4) Install camshaft thrust plate and chain oil tab.
Make sure tang enters lower right hole i n
thrust plate. Tighten bolts to 24 N-m (210 in. lbs.)
torque. Top edge of tab should be flat against thrust
plate i n order to catch oil for chain lubrication.
(5) Place both camshaft sprocket and crankshaft
sprocket on the bench with timing marks on exact
imaginary center line through both camshaft and
crankshaft bores.
(6) Place timing chain around both sprockets.
(7) Turn crankshaft and camshaft to line up with
keyway location i n crankshaft sprocket and i n cam­
shaft sprocket.
(8) Lift sprockets and chain (keep sprockets tight
against the chain i n position as described).
(9) Slide both sprockets evenly over their respec­
tive shafts and use a straightedge to check alignment
of timing marks (Fig. 13).
Fig. 13 Alignment of Timing Marks
(10) Install the camshaft bolt/cup washer. Tighten
bolt to 68 N-m (50 ft. lbs.) torque.
(11) Measure camshaft end play. Refer to Specifica­
tions for proper clearance. I f not within limits, install
a new thrust plate.
(12) Each tappet reused must be installed i n the
same position from which i t was removed. When
camshaft is replaced, all of the tappets must be
replaced.
DISTRIBUTOR
REMOVAL
Refer to Group 8D, Ignition Systems for the proper
procedure.
R E M O V A L — D R I V E SHAFT BUSHING
(1) Remove the intake manifold (refer to Group 11,
Exhaust System and Intake Manifold).
(2) Insert Distributor Drive Shaft Bushing Puller
Tool C-3052 into old bushing and thread down until a
tight fit is obtained (Fig. 14).
(3) Hold puller screw and tighten puller nut until
bushing is removed.
Fig. 14 Distributor Driveshaft Bushing Removal
INSTALLATION—DRIVE SHAFT BUSHING
(1) Slide new bushing over burnishing end of Dis­
tributor Drive Shaft Bushing Driver/Burnisher Tool
C-3053. Insert the tool and bushing into the bore.