Dodge Dakota Sport 2001 Service Manual page 1058

AN
VALVE SPRINGS (Continued)
INSTALLATION—VALVE SPRINGS
This procedure can be done with the engine cylin-
der head installed on the block.
Inspect the valve stems, especially the grooves. An
Arkansas smooth stone should be used to remove
nicks and high spots.
CAUTION: Install oil seals carefully to prevent dam-
age from the sharp edges of the valve spring lock
grove.
(1) Lightly push the valve seal over the valve stem
and valve guide boss. Be sure the seal is completely
seated on the valve guide boss.
(2) Install valve spring and retainer.
(3) Compress the valve spring with Valve Spring
Compressor Tool MD-998772A and insert the valve
locks. Release the spring tension and remove the
tool. Tap the spring from side-to-side to ensure that
the spring is seated properly on the engine cylinder
head.
(4) Release air pressure and disconnect the air
hose. Remove the adaptor from the spark plug hole
and install the spark plug.
(5) Repeat the procedures for each remaining valve
spring to be removed.
(6) Install the push rods. Ensure the bottom end of
each rod is centered in the plunger cap seat of the
hydraulic valve tappet.
(7) Install the rocker arms, pivots and bridge at
their original location.
(8) Tighten the bridge cap screws alternately, one
at a time, to avoid damaging the bridge. Tighten the
cap screws to 28 N·m (21 ft. lbs.) torque.
(9) Install the engine cylinder head cover (Refer to
9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
ENGINE BLOCK
CLEANING
Thoroughly clean the oil pan and engine block gas-
ket surfaces.
Use compressed air to clean out:
• The galley at the oil filter adaptor hole, the filter
bypass hole (Fig. 24).
• The front and rear oil galley holes (Fig. 25) (Fig.
26).
• The feed holes for the crankshaft main bearings.
Once the block has been completely cleaned, apply
Mopar Thread Sealant with Teflon to the threads of
the front and rear oil galley plugs. Tighten the plugs
to 41 N·m (30 ft. lbs.) torque.
Fig. 24 Oil Filter Adaptor Hole
1 - FILTER BYPASS HOLE
2 - OIL FILTER ADAPTOR HOLE
Fig. 25 Front Oil Galley Hole
1 - FRONT OIL GALLEY HOLE
INSPECTION
Inspect the cylinder bores for signs of scorring, pit-
ting or cracks. If the cylinder bores are scorred or
pitted the cylinder bores will require boreing or hon-
ing to clean them up. Refer to Honing Cylinder Bores
in this Section. If the cylinder bore(s) are cracked the
cylinder block must be replaced.
Inspect the cylinder block to cylinder head mating
surface for flatness and/or pitting.
ENGINE 2.5L 9 - 29