Dodge ram truck 3500 1996 Service Manual page 1098

I - 118 5 J L ENGINE
REHOWAL mm INSTALLATION fCorifinyed)
(3) Hold tool in position with a distributor lock-
plate bolt. This tool will restrict camshaft from being
pushed in too far and prevent knocking out the welch
plug in rear of cylinder block. Tool should remain
installed u n t i l the camshaft and crankshaft
sprockets and t i m i n g chain have been installed,
(4) Install camshaft thrust plate and chain oil tab.
Make sure tang enters lower r i g h t 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 in order to catch oil for chain lubrication.
(5) Place both camshaft sprocket and crankshaft
sprocket on the bench with timing marks on exact imagi­
nary 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 in crankshaft sprocket and in cam­
shaft sprocket.
(8) Lift sprockets and chain (keep sprockets tight
against the chain in position as described).
(9) Slide both sprockets evenly over their respec­
tive shafts and use a straightedge to check alignment
of timing marks (Fig. 31).
Fig, 81 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 in the same
position from which it was removed. When camshaft is
replaced, all of the tappets must be replaced.
CAMSHAFT BEARINGS
REMOVAL
NOTE: This procedure requires that the engine is
removed from the vehicle.
(1) With engine completely disassembled, drive out
rear cam bearing core hole plug.
(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. 32).
Fig. 32 Camshaft Bearings Removal/Installation with
Tool C-3132-A
INSTALLATION
(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 in the tool. Install horse­
shoe lock and by reversing removal procedure, care­
fully drive bearing shell into place.
(3) Install remaining bearings in the same manner.
Bearings must be carefully aligned to bring oil holes into
full register with oil passages from the main bearing. If the
camshaft bearing shell oil holes are not in exact alignment,
remove and install them correctly. Install a new core hole
plug at the rear of camshaft. Be sure this plug does not
leak.
CAMSHAFT BEARINGS
REMOVAL
NOTE: This procedure requires that the engine is
removed from the vehicle.
(1) With engine completely disassembled, drive out
rear cam bearing core hole plug.
(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. 33).
Fig. 33 Camshaft Bearings Removal/Installation with
Tool C-3132-A .