Chrysler RAM TRUCK 2500 1994 Service Manual page 778

(2) Install proper size adapters and horseshoe
washers (part of Camshaft Bearing Remover/Installer
Tool C-3132-A) at back of each bearing shell, Drive
out bearing shells (Fig. 11).
Fig. 11 Camshaft Bearings Removal and Installation
with Tool C-3132-A
INSTALLATION—BEARING
(1) Install new camshaft bearings with Camshaft
Bearing Remover/Installer Tool C-3132-A by sliding
the new camshaft bearing shell over proper adapter.
(2) Position rear bearing i n the tool. Install horse­
shoe lock and by reversing removal procedure, care­
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 n o t 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 r e b u i l t , a new
camshaft and/or new tappets installed, a d d 1
p i n t o f M o p a r Crankcase Conditioner, o r equiv­
alent. The o i l m i x t u r e should be left i n engine
for a m i n i m u m o f 805 k m (500 miles). D r a i n at
t h e 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).
(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 r e m a i n
installed u n t i l the camshaft a n d crankshaft
sprockets a n d t i m i n g c h a i n have been installed.
(4) Install camshaft thrust plate and chain oil tab.
M a k e sure t a n g enters l o w e r r i g h t hole i n
t h r u s t 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.
Fig. 12 Camshaft Holding Tool C-3509 (Installed
Position)
(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 camshaft 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, a l l o f the tappets must be
replaced.
DISTRIBUTOR
REMOVAL
Refer to Group 8D, Ignition Systems for the proper
procedure.