Dodge dakota 2002 Service Manual page 1626

DR
INTAKE/EXHAUST VALVES & SEATS (Continued)
Fig. 18 Testing Valve Spring for Compressed
1 - TORQUE WRENCH
2 - VALVE SPRING TESTER
REMOVAL
REMOVAL—VALVE STEM SEALS
NOTE: This procedure is done with the cylinder
head installed.
(1) Disconnect the negative cable from the battery.
(2) Set engine basic timing to Top Dead Center
(TDC) and remove air cleaner.
(3) Remove cylinder head covers (Refer to 9 -
ENGINE/CYLINDER
COVER(S) - REMOVAL) and spark plugs (Refer to 8
- ELECTRICAL/IGNITION
PLUG - REMOVAL).
(4) Using suitable socket and flex handle at crank-
shaft retaining bolt, turn engine so that the piston of
the cylinder to be worked on, is at TDC on the com-
pression stroke.
(5) Remove rocker arms (Refer to 9 - ENGINE/
CYLINDER HEAD/ROCKER ARM / ADJUSTER
ASSY - REMOVAL).
(6) With air hose attached to an adapter installed
in the spark plug hole, apply 620-689 kPa (90-100
psi) air pressure.
(7) Using Valve
MD-998772A with adapter 6716A (Fig. 19), compress
valve spring and remove retainer valve locks and
valve spring.
(8) Remove the valve stem seal.
HEAD/CYLINDER
CONTROL/SPARK
Spring Compressor
Fig. 19 Valve Spring Compressor MD-998772A with
Adaptor 6716-A and Screw 6765
1 - SPECIAL TOOL MD 998772A
2 - SPECIAL TOOL 6765
3 - SPECIAL TOOL 6716A
4 - AIR HOSE
REMOVAL—VALVES AND VALVE SPRINGS
(1) Remove the cylinder head (Refer to 9 -
ENGINE/CYLINDER HEAD - REMOVAL).
(2) Special studs must be used to adapt the Valve
Spring Compressor Tool to the V-10 cylinder head
(Fig. 20). Install the metric end into the Special Tool
MD998772A and the 5/16 end into the cylinder head.
HEAD
Tool
Fig. 20 Special Studs 6715 for V-10 Engine
1 - SPECIAL TOOL 6715
ENGINE 8.0L 9 - 377