Pliers
Remove plug
96
CHAPTER FIVE
Cylinder
block
Core
plug
Strike
here
Wlthh7
Drift
Core plugs in the cylinder block prevent damage to the
block should the coolant freeze.
NOT
E
Core
plugs
can he repl
aced
inexpensivelyby
a machine shop.
If
machine work is being
performed on the engine, have the core
plugs
replaced at the
same
time.
Removal/Installation
CAUTION
Do
not
drive core plugs into the enginecast-
ing. It will he impossible to retrieve them
and
they can restrict coolant circulation, re-
suIting in serious engine damage.
Sealing edge
beforeinstallation
~l-----:c:o:ce~p:,~"--g~lnstaliation
tool
..
.......
.........................
n
Cup type plug
1. Tap the bottom edge of the core plug with a hammer
and drift. Usc several sharp blows to push the bottom of
the plug inward, tilting the top out (Figure 90).
2. Grip thetop
of
the plug finnlywith pliers.Pull theplug
from its bore (Ftgurc 91) and discard
it.
NOTE
The core
plugs
can also be removed
hydrill
-
ing a hole in the
center
of
the
plug
and
pry
-
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