Chrysler RAM TRUCK 2500 1994 Service Manual page 751

Fig. 10 Timing Chain Oil Tab Installation
Fig. 11 Camshaft Bearings Remowal and Installation
with Tool C-3132-A
(2) Position rear bearing i n the tool. Install
horseshoe lock and by reversing removal procedure,
carefully 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 plug 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 an 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 minimum of 805 k m (500 miles). Drain at
the next normal oil 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
installed u n t i l the camshaft a n d crankshaft
sprockets and timing chain 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 i n . 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).
(10) Install the camshaft bolt/cup washer. Tighten
bolt to 68 N-m (50 ft. lbs.) torque.
Fig. 13 Alignment of Timing Marks