Dodge ram truck 3500 1996 Service Manual page 1063

REMOVAL AND I N S T A L L A T I O N f C o n t i n u e d !
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
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 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. 31 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
R E M O V A L
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).
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.
Fig. 32 Camshaft Bearings Removal/Installation with
Tool C-3132-A
(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 man­
ner. 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 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.
CRANKSHAFT MAIN BEARINGS
REMOVAL
(1) Remove the oil pan.
(2) Remove the oil pump from the rear main bear­
ing cap.
(3) Identify bearing caps before removal. Remove
bearing caps one at a time.
(4) Remove upper half of bearing by inserting
Crankshaft Main Bearing Remover/Installer Tool
C-3059 into the oil hole of crankshaft (Fig. 33).
(5) Slowly rotate crankshaft clockwise, forcing out
upper half of bearing shell.
INSTALLATION
Only one main bearing should be selectively fitted
while all other main bearing caps are properly tight­
ened. A l l bearing capbolts removed during service
procedures are to be cleaned and oiled before instal­
lation.
When installing a new upper bearing shell, slightly
chamfer the sharp edges from the plain side.
(1) Start bearing in place, and insert Crankshaft
Main Bearing Remover/Installer Tool C-3059 into oil
hole of crankshaft (Fig. 33).
(2) Slowly rotate crankshaft counterclockwise slid­
ing the bearing into position. Remove Tool C-3059.
(3) Install the bearing caps. Clean and oil the
bolts. Tighten the capbolts to 115 N-m (85 ft. lbs.)
torque.
(4) Install the oil pump.
(5) Install the oil pan.