Dodge dakota 2002 Service Manual page 1374

DR
ROCKER ARM / ADJUSTER ASSEMBLY (Continued)
Fig. 45 Rocker Arm—Removal
1 - CAMSHAFT
2 - SPECIAL TOOL 8516
(1) For rocker arm installation on cylinders 3 and
5 Rotate the crankshaft until cylinder #1 is at TDC
exhaust stroke.
(2) For rocker arm installation on cylinders 2 and
8 Rotate the crankshaft until cylinder #1 is at TDC
compression stroke.
(3) For rocker arm installation on cylinders 4 and
6 Rotate the crankshaft until cylinder #3 is at TDC
compression stroke.
(4) For rocker arm installation on cylinders 1 and
7 Rotate the crankshaft until cylinder #2 is at TDC
compression stroke.
(5) Using special tool 8516 press downward on the
valve spring, install rocker arm (Fig. 45).
(6) Install the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER
COVER(S) - INSTALLATION).
VALVE SPRINGS
DESCRIPTION
The valve springs are made from high strength
chrome silicon steel. The springs are common for
intake and exhaust applications. The valve spring
seat is integral with the valve stem seal, which is a
positive type seal to control lubrication.
HEAD/CYLINDER
REMOVAL
(1) Remove the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER
COVER(S) - REMOVAL).
(2) Using Special Tool 8516 Rocker Arm Remover,
remove the rocker arms and the hydraulic lash
adjusters (Fig. 46).
Fig. 46 Rocker Arm—Removal
1 - CAMSHAFT
2 - SPECIAL TOOL 8516
(3) Remove the spark plug for the cylinder the
valve spring and seal are to be removed from.
(4) Apply shop air to the cylinder to hold the
valves in place when the spring is removed
(5) Remove the camshaft (Refer to 9 - ENGINE/
CYLINDER HEAD/CAMSHAFT(S) - REMOVAL).
NOTE: All eight valve springs and seals are
HEAD
removed in the same manner; this procedure only
covers one valve seal and valve spring.
(6) Using Special Tool 8387 Valve Spring Compres-
sor, compress the valve spring.
NOTE: It may be necessary to tap the top of the
valve spring to loosen the spring retainers locks
enough to be removed.
(7) Remove the two spring retainer lock halves.
NOTE: the valve spring is under tension use care
when releasing the valve spring compressor.
(8) Remove the valve spring compressor.
ENGINE - 4.7L 9 - 125
HEAD/CYLINDER HEAD