Dodge RAM TRUCK 1500 1995 Service Manual page 981

S - m O L E N G I N E «
I N S T A L L A T I O N
Cnly one main bearing should be selectively fitted
while all .other main bearing caps are properly tight­
ened. All 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. 21).
(2) Slowly rotate crankshaft counterclockwise slid­
ing the bearing into position. Remove Tool C-3059.
(8) Lubricate the main journals with clean engine
oil. Install main bearing caps and bolts. Follow the 2
step tightening sequence.
« ? Step 1—Starting with bearing cap No.l, tighten
the bolts to 27 N-m (20 ft. lbs.) torque.
© Step 2—Starting with bearing cap No.l, tighten
the bolts to 115 N-m (85 ft. lbs.) torque.
(4) Apply a rearward axial load of 667 N (150 lbs-f)
on crankshaft 'centerline, driving No.8 main cap and
thrust bearing against No.8 bulkhead. Repeat proce­
dure, driving crankshaft forward to align rear flange
of thrust bearings in a common plane. Front face of
No.l main cap must not extend forward in front of
face of No.l bulkhead.
(5) Instsli the oil pump pick-up tube and oil pan.
CRANKCH^f
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mm %mi
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REMOVAL
(1) Remove the transmission (refer to Group 21,
Transmissions).
(2)' Remove the oil pan.
(3) Remove the rear seal retainer. Discard the oil
seal and the gasket (Fig. 22).
Fig. 22 Crankshaft Resr 3eai R?4;dner
OLSAUINQ
Wash all parts in a suitable solvent and inspect
carefully for damage or wear.
B R
(1) Position the rear seal in the retainer.
(2) Using Special Tool 6687, position the retainer
and oil seal over the crankshaft. Install the bolts and
tighten to 22 N-m (16 ft. lbs.) torque.
(3) The seal face surface must be within 0.508 mm
(0.020 in) full indicator movement relative to rear
face of crankshaft. If out of limits, gently tap the
high side into the retainer.
(-4) Add a small amount of Mopar® Silicone Rubber
Adhesive Sealant at split-line.
(5) Install the oil pan.
(7) Install the transmission (refer to group 21,
Transmissions).
GYUMDER BLOCK
Remove the engine assembly from the vehicle.
(1) Remove the cylinder head and valve train.
(2) Remove the intake system.
( 8 ) Remove the timing cover and timing chain with
sprockets.
(4) Remove the oil pan.
(5) Remove the piston-connecting rod assemblies.
(6) Remove the crankshaft and bearings.
'HiQ
Clean. ;ylinder block thoroughly and check all core
;,cl3
-yczgs
for evidence of leaking.
Examine block for cracks or fractures.
The cylinder walls should be checked for out-of-
round and taper with Cylinder Bore Indicator Tool,
Special tool 6879 or equivalent. The cylinder block
should be bored and honed with new pistons and
rings fitted if:
o The cylinder bores show more than 0.127 mm
(0.005 inch) out-of-round.
o The cylinder bores show a taper of more than
0.254 mm (0.010 inch).
© The cylinder walls are badly scuffed or scored.
Boring and honing operation should be closely co­
ordinated with the fitting of pistons and rings so
specified clearances may be maintained.
Refer to Standard Service Procedures in the begin­
ning of this Group for the proper honing of cylinder
bores.
ENGINE
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PLUGS
Engine core plugs have been pressed into the oil
galleries behind the camshaft thrust plate. This will
reduce internal leakage and help maintain higher oil
pressure at idle.