9.15
Section 9
Disassembly
9
Figure 9-56. Disassembled Head and Valve
Components.
NOTE: These engines use a valve stem seal on
the intake valves. See Figure 9-57.
Always use new seals when the valves
are removed from the cylinder head.
Replace the seals if they are deteriorated
or damaged in any way. Never reuse an
old seal.
Figure 9-57. Cylinder Head Showing Intake Seal.
4. Repeat the above procedure for the other cylinder
head. Do not interchange parts from one cylinder
head with parts from the other cylinder head.
Figure 9-58. Removing Closure Plate Screws.
2. Locate the three splitting tabs, which are cast into
the perimeter of the closure plate. Insert the drive
end of a 1/2" breaker bar between the top splitting
tab and the crankcase. Hold the handle horizontal
and pull it toward you to break the RTV seal. See
Figure 9-59. If necessary, pry at the bottom
splitting tabs also. Do not pry on the sealing
surfaces, as this could cause leaks. Carefully pull
the closure plate from the crankcase.
Figure 9-59. Splitting Closure Plate from Crankcase.
Remove Closure Plate
1. Remove the ten hex. flange screws securing the
closure plate to the crankcase. See Figure 9-58. If
a thick washer is installed under the screw head
in the #10 location, and/or one silver (ground)
screw is used, (normally the No. 4 or 6 position),
note these special assembly details for proper
reassembly later.
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