Chrysler RAM TRUCK 2500 1994 Service Manual page 832

INSTALLATION
(1) Lubricate camshaft lobes and camshaft bearing
journals. Using a long bolt, insert the camshaft into
the cylinder block.
Whenever an engine has been rebuilt, a new
camshaft and/or new tappets installed, add 1
pint of Mopar 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 of 805 k m (500 miles). Drain at
the next normal oil change.
(2) Install camshaft thrust plate. Tighten the torx
bolts to 22 N-m (16 ft. lbs.) torque.
(3) Place both camshaft sprocket and crankshaft
sprocket on the bench with timing marks on exact
imaginary center line through both camshaft and
crankshaft bores.
(4) Place timing chain around both sprockets.
(5) Turn crankshaft and camshaft to line up with
keyway location i n crankshaft sprocket and the dowel
cutaway i n camshaft sprocket.
(6) Lift sprockets and chain (keep sprockets tight
against the chain i n position as described).
(7) Slide both sprockets evenly over their respec­
tive shafts and use a straightedge to check alignment
of timing marks.
(8) Install the camshaft bolt. Tighten bolt to 75
N-m (55 ft. lbs.) torque.
(9) Measure camshaft end play. Refer to Specifica­
tions for proper clearance. I f not within limits, install
a new thrust plate.
(10) Each tappet reused must be installed i n the
same position from which i t was removed. When
camshaft is replaced, all o f the tappets must be
replaced.
(11) Install tappets and push rods i n their original
location.
(12) Install the rocker arms.
(13) Install the timing chain cover.
(14) Install the crankshaft pulley/damper.
(15) Install the intake manifolds.
(16) Install the cylinder head covers.
OIL PAN
REMOWAL
(1) Disconnect the negative cable from the battery.
(2) Raise vehicle.
(3) Drain engine oil.
(4) Remove left engine to transmission strut.
(5) Remove oil pan and one-piece gasket. The en­
gine may have to be raised slightly on 2WD vehicles.
(6) Remove the oil pick-up tube assembly (Fig. 1).
Discard the gasket.
CLEANING
Clean the block and pan gasket surfaces.
I f present, t r i m excess sealant from inside the en­
gine.
PICK-UP
TUBE
SEALANT AT
SPLIT-LINE
J9409-76
Fig. 1 Oil Pick-Up Tube
Clean oil pan i n solvent and wipe dry with a clean
cloth.
Clean oil screen and pipe thoroughly i n clean sol­
vent. Inspect condition of screen.
INSPECTION
Inspect oil drain plug and plug hole for stripped or
damaged threads. Repair as necessary.
Inspect oil pan mounting flange for bends or distor­
tion. Straighten flange, i f necessary.
INSTALLATION
(1) Fabricate 4 alignment dowels from 1 1/2 x 5/16
inch bolts. Cut the head off the bolts and cut a slot
into the top of the dowel. This will allow easier in­
stallation and removal with a screwdriver (Fig. 2).
17
2
" x 5 / 1 6 " BOLT
i
DOWEL
SLOT
J9209-106
Fig. 2 Fabrication of Alignment Dowels
(2) Install the dowels i n the cylinder block at the
four corners.
(3) Apply small amount of Mopar Silicone Rubber
Adhesive Sealant, or equivalent at the split lines.
The split lines are between the cylinder block, the
timing chain cover and the rear crankshaft seal as­
sembly (Fig. 1). After the sealant is applied you
have 3 minutes to install the gasket and oil pan.
(4) Slide the one-piece gasket over the dowels and
onto the block.